CH272003A - Alloy. - Google Patents
Alloy.Info
- Publication number
- CH272003A CH272003A CH272003DA CH272003A CH 272003 A CH272003 A CH 272003A CH 272003D A CH272003D A CH 272003DA CH 272003 A CH272003 A CH 272003A
- Authority
- CH
- Switzerland
- Prior art keywords
- alloy according
- exceeding
- titanium
- total
- proportion
- Prior art date
Links
- 229910045601 alloy Inorganic materials 0.000 title claims description 53
- 239000000956 alloy Substances 0.000 title claims description 53
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 19
- 239000010936 titanium Substances 0.000 claims description 19
- 229910052719 titanium Inorganic materials 0.000 claims description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 16
- 239000010955 niobium Substances 0.000 claims description 16
- 229910052796 boron Inorganic materials 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 229910052758 niobium Inorganic materials 0.000 claims description 10
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 10
- 229910052715 tantalum Inorganic materials 0.000 claims description 10
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 10
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 229910052721 tungsten Inorganic materials 0.000 claims description 8
- 229910052720 vanadium Inorganic materials 0.000 claims description 8
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 230000000737 periodic effect Effects 0.000 claims description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 6
- 239000010937 tungsten Substances 0.000 claims description 6
- 239000011651 chromium Substances 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 8
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 7
- 239000011733 molybdenum Substances 0.000 description 7
- 229910052748 manganese Inorganic materials 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- -1 tungatene Chemical compound 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- QFXZANXYUCUTQH-UHFFFAOYSA-N ethynol Chemical group OC#C QFXZANXYUCUTQH-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/30—Ferrous alloys, e.g. steel alloys containing chromium with cobalt
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Alliage. La pi,esente invention a pour objet un alliage presentant une Brande resistance me- eanique ä teinperature elevee. Alloy. The subject of the present invention is an alloy having a high mechanical strength at high temperature.
Le developpement des niachines tlierini- ques, notamment des turbines ä gaz et des reacteurs, necessite de plus en plus La fabrica- tion d'elements usines presentant une brande resistance meeanique a teinperatui-e elevee. Plusieurs alliages ont ete dejä pi-oposes ä cettc fin; leur usage est cependant reste tres limite, soit parce que leer travail ä eliaud West pas possible, soit du fait qu'ils deviennent fragiles apres une exposition prolonbee ä Baute tempe- rature. En eilet, une particularite des alliages ferreux fortement allfies qui rend 1e Probleme particuliereinent diffieile ä resoudre est que 1'addition de coinposants auginentant la resis- tance mecanique ä temperature elevee entraine une diminution de la stabilite qui rend les- dits alliages fragiles ä la Suite dune exposi- tion prolongee ä teinperattire elevee. The development of mechanical machines, in particular gas turbines and reactors, increasingly requires the manufacture of machined elements having a very high mechanical resistance to damage. Several alloys have already been prepared for this purpose; however, their use has remained very limited, either because work at Eliaud is not possible, or because they become brittle after prolonged exposure to high temperatures. In fact, a feature of highly alloyed ferrous alloys which makes the particular problem difficult to solve is that the addition of components which increase the mechanical strength at high temperature leads to a decrease in stability which makes said alloys brittle as a result. from prolonged exposure to high tint attraction.
Le besoin Tun alliage pouvant eire tra- vai11e ä chaud, de brande resistance niecanique ä teinpei-ature elevee et possedant une Bonne stabilite auxdites teinperatures, se fait done sentir. The need therefore arises for an alloy which can be hot-worked, of high mechanical strength at high tinting and possessing good stability at said tints.
La presente invention vise ä satisfaire ce besoin et a pour objet un alliage caracterise en ce qu'il eontient, en poids, de 15 ä 25% de ehrome, de 2 ä 25% de nickel, de 10 ä 401/o de Bobalt, de 0,5 ä 151/o de tungstene, de 0,01 a 3% au total Tau moins un metal du groupe III de la table periodique des eM- ments, du manganese, en Proportion n'exee- dant pas 211/o, du Silicium, en Proportion n'excedant pas 1%, du earbone, en Proportion n'excedant pas 1%, de 1'azote, en Proportion n'excedant pas 0,25%, et du fer en Propor- tion d'au moins 5%. The present invention aims to satisfy this need and relates to an alloy characterized in that it contains, by weight, from 15 to 25% chromium, from 2 to 25% nickel, from 10 to 401/o Bobalt, from 0.5 to 151/o of tungsten, from 0.01 to 3% in total Tat least one metal from group III of the periodic table of elements, manganese, in a proportion not exceeding 211/o , silicon, in a proportion not exceeding 1%, carbon, in a proportion not exceeding 1%, nitrogen, in a proportion not exceeding 0.25%, and iron in a proportion of at least 5%.
Les metaux du groupe III de la table pe- i-iodique des elements, qui entrent plus parti- eulierement en ligne de compte, sont 1e bore et 1'aluminium. Lorsque 1'alliage contient du bore, sa teneur en cet element Sera. de pr6fe- renee inferieure ä, l0/0, ou mieux encore, infe- rieure ä 0,7%, L'alliage contiendra de prefe- renee au moins 0,5% d'al.uminium s'il ne eon- tient pas de bore. The metals of group III of the periodic table of the elements, which come into particular consideration, are boron and aluminum. When the alloy contains boron, its content of this element will be. preferably less than 10/0, or better still, less than 0.7%, the alloy will preferably contain at least 0.5% aluminum if it does not contain no boron.
L'alliage de 1'invention peut egaleinent eontenir 0,5 ä 1,5% de tita.ne, 0,5 ä 2% de niobium, de tantale an deRTI ID="0001.0275" WI="16" HE="4" LX="1481" LY="1744"> vanaditini, ou 0,5 'a 3% au total d'au moins deux des elements suivants : niobium, titane, tantale et v anadium, la teneur en titane etant eependant au plus de 7_,5%. The alloy of the invention may also contain 0.5 to 1.5% titanium, 0.5 to 2% niobium, tantalum and deRTI ID="0001.0275" WI="16" HE="4 " LX="1481" LY="1744"> vanaditini, or 0.5 to 3% in total of at least two of the following elements: niobium, titanium, tantalum and va anadium, the titanium content being dependent at most of 7_.5%.
L'alliage peut egalement eontenir jusqu'ä 8% de molybdene; 1a teneur en molybdene 1a plus favorable e st eependant de 0,5 2 5%. Lorsque 1'alliage ne contient pas de molyb- dene, la teneur en tungstene Sera de prUe- rence ('au moins 7,5 %. The alloy may also contain up to 8% molybdenum; the most favorable molybdenum content is 0.5 to 25%. When the alloy does not contain molybdenum, the tungsten content will be preferred (at least 7.5%).
La teneur en fer de 1'alliage Sera, de pre- ference, supei@ieure ä 70%. En beneral, 1'al- liage de 1'invention contiendra egaleinent de faibles qiiantites d'impuretes inevitables. The iron content of the alloy will preferably be greater than 70%. Generally, the alloy of the invention will also contain small amounts of unavoidable impurities.
Lorsqu'une excellente forgeabilite äst d6si- ree, la teneur de Palliage en carbone doit res- ter inferieure ä 0,35 01o. De meme, pour que Palliage präsente les meilleures qualites con- cernant son travail ä chaud, sa teneur en nickel doit e"tre comprise entre 15 et 251)/o, sa teneiu en cobalt entre 10 et 25% et sa teneur en fer entre 25 et<B>50010.</B> When excellent forgeability is desired, the carbon content of the alloy should be kept below 0.35%. Similarly, for the alloy to present the best qualities with regard to its hot working, its nickel content must be between 15 and 251/o, its cobalt content between 10 and 25% and its iron content between 25 and <B>50010.</B>
En se tenant aux donnees de coinposition indiquees ei-dessus, an peut obtenir des alliages pouvant etre aisement forges, soudes et usines et dont la resistance mecanique et la stabilite ä haute temperatiire (648 C et plus) sont excellentes. Des elements de machines execu- tes en de tels alliages peuvent travailler sous de fortes eontraintes Pendant -un teinps pro long6 ä 815 C, ou ä des temperatures im peu plus elevees Pendant de courtes periodes et sans contrainte excessive. By adhering to the above given position data, one can obtain alloys which can be easily forged, welded and machined and whose mechanical strength and stability at high temperature (648 C and more) are excellent. Machine parts made of such alloys can work under heavy stress for a long time at 815°C, or at slightly higher temperatures for short periods and without undue stress.
Pour determiner les qualites dun metal ou d'un alliage, ä haute temperature, an procede dans les conditions suivantes ä 1'essai de rup- ture. Plusieurs echantillons du materiel sont soumis chacun ä im effort de traction diffe rent deternnne, ä une temperature elevee de- terminee. Le teinps necessaire pour que la rupture ait lieu dann ces conditions äst releve. Les valeurs obtenues sont reportees sur un graphique, 1e temps de rupture en abseisses et la contrainte appliquee en ordonnees, par exemple. 0n obtient ainsi pour 1e materiel essaye une courbe qui, pour une temperature determinee, donne 1e temps necessaire ä 1a. rupture en fonction de la eontrainte ä laquelle 1e materiel äst soumis. Ces courbes sont rele- v6es poiir plusieurs temperatures et, sont re- portees sur un graphique unique qiii permei: de determiner, de fa@on preeise, les contraintes que peut supporter 1e materiel en question poiir iine temperature et un temps donnes quel- conques. Ces valeurs sont particulierement utiles pour 1'etablissement de projets; sp6ciale- ment, s'il äst ä prevoir que 1e materiel choisi Sera soumis ä des surchauffes et ä des sur- charges. To determine the qualities of a metal or an alloy, at high temperature, the breaking test is carried out under the following conditions. Several samples of the material are each subjected to a different determined tensile stress, at a determined high temperature. The time necessary for the rupture to take place under these conditions is noted. The values obtained are plotted on a graph, the rupture time in absesses and the stress applied in ordinates, for example. We thus obtain for the material tested a curve which, for a determined temperature, gives the time necessary for the process. failure depending on the stress to which the material is subjected. These curves are plotted at several temperatures and are plotted on a single graph which makes it possible to determine, in a precise manner, the stresses that the material in question can withstand at any given temperature and time. . These values are particularly useful for establishing projects; especially if the chosen equipment is to be expected to be subjected to overheating and overloading.
Le tableau donne les resultats d'essais obtenus avec differents alliages conformes ä, 1'invention. Dans cette serie d'essais, tour les echantillons sont ä 1'etat coule, 'a 1'exception du douzieme qui äst ä 1'etat forge. Les va- leurs indiquees ont kg obteniies pour une tem- p6rature de 815 C et des cont.raintes de 1400, 1750 ou 2100 kg-/cm@; 1e teinps necessaire pour que la rupture se prodiiise äst indique en heures. The table gives the results of tests obtained with various alloys in accordance with the invention. In this series of tests, all the samples are in the cast state, with the exception of the twelfth which is in the forged state. The values given are kg obtained for a temperature of 815 C and stresses of 1400, 1750 or 2100 kg-/cm@; The time required for failure to occur is indicated in hours.
<I>Tablea.2@.:</I> <I>Composition:</I> du manganese en Proportion n'excedant pas 2%, Nombre d'heures apres lequel la du silicium en Proportion n'excedant pas 1%, les constituants rupture se produit ä 815 C sous indiquds ci-dessous, 1e solde etant du fer. une coritrainte de Autres ö Cr % Ni % Co % Mn % W % B % N % C elements: 1,400 <B>1,750</B> 2,100 18,5 4 20 4 4 0,12 0,01 0,09 320 N. T. N. T. 18,5 4 20 4 4 0,12 0,04 0,27 847 N. T. N. T. 18,5 4 20 4 4 0,21 0,04 0,08 1.92 N. T. N. T. 18,5 4 20 4- 4 0,23 0,04 0;08 <B>2</B>95 :@T. T. N. T. 18,5 4 20 2 2 0,4 0,04 0,1 232 N. T. N. T. 18,5 4 20 4 2 0,4- 0,04 0,08 <B>216-"-'-</B> N. T. N. T. <B>185</B> 4 20 2,3 2,3 0,42 0,04 0,27 1 Al N. T. 1.8 N. T. <B>18,5</B> 4 20 4 4 0,47 0,0 0,12 1364 . T. N. T. <I>Tablea.2@.:</I> <I>Composition:</I> of manganese in a proportion not exceeding 2%, Number of hours after which the of silicon in a proportion not exceeding 1% , the constituents breaking occurs at 815° C. as indicated below, the balance being iron. a co-restraint of Other ö Cr % Ni % Co % Mn % W % B % N % C elements: 1,400 <B>1,750</B> 2,100 18.5 4 20 4 4 0.12 0.01 0.09 320 N. T. N. T. 18.5 4 20 4 4 0.12 0.04 0.27 847 N.T. N.T. 18.5 4 20 4 4 0.21 0.04 0.08 1.92 N.T. N.T. 0.08 <B>2</B>95:@T. N. T. N. T. 18.5 4 20 2 2 0.4 0.04 0.1 232 N. T. N. T. 18.5 4 20 4 2 0.4- 0.04 0.08 <B>216-"-'-</B> N. T. N. T. <B>185</B> 4 20 2.3 2.3 0.42 0.04 0.27 1 Al N.T. 1.8 N.T. <B>18.5</B> 4 20 4 4 0.47 0.0 0.12 1364. T.N.T.
Composition: du manganese en Proportion n'excedant pas 2 /", Nombre d'heures apres lequel la du Silicium en Proportion n'excddant pas <B>1</B>%<B>"</B> les constituants rupture se produit 5 815 C sous indiques ci-dessous, 1e Solde dtant du fer. une contrainte de: Autres ü Cr "/" Ni '% Co % Mo % W ;ä B yö N % C dldments: 1,400 1,750 2,100 <B>1</B>8,5 18 20 4 4 0,5 0,04 0,28 1138 N. T. N. T. 18,5 15 20 4 4 0,5 0,04 0,30 4000* N. T. N. T. 18,5 4 20 4 4 0,44 0,04 0,33 1332 N. T. N. T. 20 20 20 3 2 0,<B>1</B>5 0,15 1 Al 203 N. T. N. T. 1.8,5 4 35 4 4 0,57 0,04 0,08 2133 923 262 18 4 35 7,5 3 0,50 N. D. 0,06 N. T. 362 N. T. <B>1</B>8 4 35 8 8 0,57 N. <B><I>1)</I></B>. 0,07 N. T. 362 126 18 15 20 10 0,31 N. D. 0,09 N. T. 950 N. T. 18 4 35 10 0,52 N. D. 0,10 N. T. 2236 7<B>5</B>0 20 20 20 15 0,41_ N. D. 0,08 N. T. 1776 732 20 20 20 15 0,60 N. D. 0,12 N. T. N. T. 1543 18 20 40 3 7.0 0,38 N. <B><I>1)</I></B>. 0,38 N. T. N. T. 1044 18 20 40 15 0,39 N. D. 0,14 (270 h. 2500 kg/cm-) 18,5 4 20 2 2 0,4 0,04** 0,09 1 Nb 623 67(a) N. T. 18,5 4 20 4 4 0,5 0,04e* 0,09 1 Nb N. T. 256 N. T. 18,5 20 20 4 4 0,4 0,1 0,14 1 Nb 1.344* 324 121 18 20 20 1.5 0,5 N. D. <B>0,10</B> 1 Nb N. T. NT. T. 648 18 20 20 3 10 0,5 N. D. 0,10 1 Nb N. T. N. T. 243 18 20 35 14 0,5 N. D. 0,1.0 1 Nb N. T. N. T. 600 18 20 35 3 10 0,5 N. D. 0,1.0 1 Nb N. T. N. T. 592 * Pas de rupture; N.T.-Pas d'essai; N. D.- C 0,25%, probablement entre 0,02 et 0,1 ,ö; (a) sous 1785 kg/cm2; ** valeur approximative. Les valeurs indiquees par aei tableau mon- trent la remarquable resistance inecanique aux temperatures elevees atteintes par les alliages conformes ä 1'invention contenant en proportions convenables du molybdene, tung- atene, niobium et bore. Elles montrent aussi 1'amelioration de la resistance causee par 1'augmentation de la teneur en nicket et en cobalt. Composition: of manganese in a Proportion not exceeding 2 /", Number of hours after which the rupture of Silicon in a Proportion not exceeding <B>1</B>%<B>"</B> the constituents produced at 5,815 C under indicated below, the 1st balance being iron. a stress of: Other ü Cr "/" Ni '% Co % Mo % W ;ä B yö N % C dldments: 1,400 1,750 2,100 <B>1</B>8.5 18 20 4 4 0.5 0, 04 0.28 1138 N. T. N. T. 18.5 15 20 4 4 0.5 0.04 0.30 4000* N. T. N. T. 18.5 4 20 4 4 0.44 0.04 0.33 1332 N. T. N. T. 20 20 20 3 2 0, <B>1</B>5 0.15 1 Al 203 N.T. N.T. 1.8.5 4 35 4 4 0.57 0.04 0.08 2133 923 262 18 4 35 7.5 3 0.50 N.A. 0.06 N.T. 362 N. T. <B>1</B>8 4 35 8 8 0.57 N. <B><I>1)</I></B>. 0.07 N.A. 362 126 18 15 20 10 0.31 N.A. 0.09 N.A. 950 N.A. 18 4 35 10 0.52 N.A. 0.10 N.A. 2236 7<B>5</B>0 20 20 20 15 0.41_ N. A. 0.08 N. T. 1776 732 20 20 20 15 0.60 N. A. 0.12 N. T. N. T. 1543 18 20 40 3 7.0 0.38 N. <B><I>1)</I></B>. 0.38 N. T. N. T. 1044 18 20 40 15 0.39 N. D. 0.14 (270 h. 2500 kg/cm-) 18.5 4 20 2 2 0.4 0.04** 0.09 1 Nb 623 67(a ) N. T. 18.5 4 20 4 4 0.5 0.04e* 0.09 1 Nb N. T. 256 N. T. 18.5 20 20 4 4 0.4 0.1 0.14 1 Nb 1.344* 324 121 18 20 20 1.5 0.5 N. D. <B>0.10</B> 1 Nb N. T. NT. T. 648 18 20 20 3 10 0.5 N. A. 0.10 1 Nb N. T. N. T. 243 18 20 35 14 0.5 N. A. 0.1.0 1 Nb N. T. N. T. 600 18 20 35 3 10 0.5 N. A. 0.1.0 1 N b N.T. N.T. 592 * No breakage; N.T.-No trial; N.D.- C 0.25%, probably between 0.02 and 0.1,ö; (a) under 1785 kg/cm2; ** approximate value. The values indicated by the table show the remarkable mechanical resistance to the high temperatures reached by the alloys in accordance with the invention containing in suitable proportions molybdenum, tungatene, niobium and boron. They also show the improvement in strength caused by the increase in nickel and cobalt content.
Lews alliages definis ei-dessus possedent., en plus de leurs qualites de resistance ä toute temperature, d'autres avantages. Ils sont tenaces et ductiles ä teniperature normale. Ils peuvent etre travailles ä chaud et usines; ä. ce point de vue, les alliages contenant 10 ä 25% de nicket et 10 ä 25% de eobalt sont particu- lierement apprecies. Les memes alliages ont tine exeellente resistance ä la corrosion, quelle soit oxydante ou reditetrice. De plus, ils se laissent facilement souder, par les methodes ordinaires comprenant la soudure ä 1'are kee- trique et la soiidure oxyacetylenique, avec metal d'apport ou par contaet. Pour s'assurer les qualites requises des alliages de ce genre, il est important que les elements de 1'alliage soient presents dans des proportions conve- nahles. Lews alloys defined above have, in addition to their qualities of resistance to any temperature, other advantages. They are tough and ductile at normal temperature. They can be hot worked and machined; To. From this point of view, alloys containing 10 to 25% nickel and 10 to 25% e-balt are particularly preferred. The same alloys have excellent resistance to corrosion, whether oxidative or reditative. In addition, they are easily weldable, by ordinary methods including ketric arc welding and oxyacetylene solder, with filler metal or by contact. To ensure the qualities required of alloys of this type, it is important that the elements of the alloy are present in suitable proportions.
Si 1e molybdene, 1e tungstene ou 1e caz- bone se troiivait ,en plus forte quantite que les valeurs indiqiiees pour les alliages definis ei-dessus, les possibilites de travail ä cbaud et de soudage de ces derniers seraient diminuees; les so-Lidures manqueraint alors de resistance et de ductilite. L'effet nuisible dune trog forte Proportion en ces elements ne poiirrait pas etre evite par eine aiigmentation de la teneur en cobalt et en niekel. Une teneur trop forte en carbone ou trop faible en molybdene, timgstene, borte ou aluminium aurait an effet nuisible sur la resistance de 1'alliage ä, haute temperature. De meme pour obtenir la meil- leure combinaison entre la haute resistance ä temperatiire elevee eit de bonnes qualites de 1'alliage concernant les possibilites d'etre usine, la teneur en chacun des elements du groupe niobium, tantale, titane et vanadium doit etre .au plus de 2% dei Palliage. If molybdenum, tungsten or carbon were to be found in greater quantities than the values indicated for the alloys defined above, the possibilities of hot working and welding of the latter would be reduced; the solids would then lack strength and ductility. The harmful effect of a high proportion of these elements could not be avoided by an increase in the content of cobalt and niekel. Too high a carbon content or too low a molybdenum, timestene, boron or aluminum content would have a detrimental effect on the high temperature strength of the alloy. Also to obtain the best combination of high strength at high temperature and good machinability qualities of the alloy, the content of each of the group elements niobium, tantalum, titanium and vanadium must be . at most 2% dei Palliage.
Au cas oü 1'alliage est destine ä des appli- cations oü la temperature ne depasse pas envi- ron 7340 C, les limites inferieures indiquees pour la composition peuvent. etre emj?loye.es; si les temperatures prevues depassent 7340 C, ce sont a;lors les valeurs superieures indiquees ou des valeurs proches qiii seront employees. Dans ce dernier cas, an donnera la preference ä un alliage contenant 15 ä 25 % de chrome, 15 ä 25 % de nickel, 10 ä 25 % de cobalt, 0,5 ä 5 % de molybdene, 0,5 ä 15 0/ö de tungstene, au plus 0,35 % de carbone, 0,01 ä 0,7% de bore, avec ou sans 0,5 ä 2 % de niobium, du manganese en Proportion n'excedant pas 2 %, du silicium en Proportion n'excedant pas 1% et de l'azote en Proportion n'excedant pas 0,25-%, 1e solde etant du fer. In the event that the alloy is intended for applications where the temperature does not exceed approximately 7340 C, the lower limits given for the composition may. to be emj?loye.es; if forecast temperatures exceed 7340 C, then the higher values given or nearer values will be used. In the latter case, preference will be given to an alloy containing 15 to 25% chromium, 15 to 25% nickel, 10 to 25% cobalt, 0.5 to 5% molybdenum, 0.5 to 15% ö of tungsten, not more than 0.35% carbon, 0.01 to 0.7% boron, with or without 0.5 to 2% niobium, manganese in a proportion not exceeding 2%, silicon in Proportion not exceeding 1% and nitrogen in Proportion not exceeding 0.25-%, the balance being iron.
Les aubes, disques et autres Parties de tur- bine sont des applications typiques pour les- qiielles 1'usage d'alliagles conformes ä 1'inven- tion est particiilierement indique. Ces objets peuvent etre soit coules, soit usines. Blades, discs and other turbine parts are typical applications for which the use of alloys according to the invention is particularly indicated. These objects can be either cast or machined.
Claims (8)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US272003XA | 1945-06-13 | 1945-06-13 | |
| US90546XA | 1946-05-09 | 1946-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH272003A true CH272003A (en) | 1950-11-30 |
Family
ID=26678984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH272003D CH272003A (en) | 1945-06-13 | 1947-05-16 | Alloy. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH272003A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1082739B (en) * | 1953-05-29 | 1960-06-02 | Nyby Bruk Ab | Use of non-precipitation-hardening, overheating-insensitive alloys |
| DE1086443B (en) * | 1954-08-27 | 1960-08-04 | Nyby Bruk Ab | Use of non-precipitation-hardening, overheating-insensitive alloys |
| DE1087356B (en) * | 1954-10-04 | 1960-08-18 | William Jessop & Sons Ltd | Heat-resistant cast alloys based on nickel-chromium |
| DE1093995B (en) * | 1951-01-27 | 1960-12-01 | Gen Motors Corp | High temperature and long-term stable alloy |
| DE1172431B (en) * | 1954-09-29 | 1964-06-18 | William Jessop & Sons Ltd | Heat-resistant iron-chromium-nickel alloys |
-
1947
- 1947-05-16 CH CH272003D patent/CH272003A/en unknown
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1093995B (en) * | 1951-01-27 | 1960-12-01 | Gen Motors Corp | High temperature and long-term stable alloy |
| DE1103594B (en) * | 1951-01-27 | 1961-03-30 | Gen Motors Corp | High temperature and long-term stable alloy |
| DE1082739B (en) * | 1953-05-29 | 1960-06-02 | Nyby Bruk Ab | Use of non-precipitation-hardening, overheating-insensitive alloys |
| DE1086443B (en) * | 1954-08-27 | 1960-08-04 | Nyby Bruk Ab | Use of non-precipitation-hardening, overheating-insensitive alloys |
| DE1172431B (en) * | 1954-09-29 | 1964-06-18 | William Jessop & Sons Ltd | Heat-resistant iron-chromium-nickel alloys |
| DE1087356B (en) * | 1954-10-04 | 1960-08-18 | William Jessop & Sons Ltd | Heat-resistant cast alloys based on nickel-chromium |
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