CN101817135B - Manufacturing method of TiAl-based alloy high-temperature double-layer oxygen-isolating sheath - Google Patents
Manufacturing method of TiAl-based alloy high-temperature double-layer oxygen-isolating sheath Download PDFInfo
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- CN101817135B CN101817135B CN2010101458095A CN201010145809A CN101817135B CN 101817135 B CN101817135 B CN 101817135B CN 2010101458095 A CN2010101458095 A CN 2010101458095A CN 201010145809 A CN201010145809 A CN 201010145809A CN 101817135 B CN101817135 B CN 101817135B
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 53
- 239000000956 alloy Substances 0.000 title claims abstract description 53
- 229910010038 TiAl Inorganic materials 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims abstract description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000010936 titanium Substances 0.000 claims abstract description 6
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 6
- 239000000853 adhesive Substances 0.000 claims abstract description 5
- 230000001070 adhesive effect Effects 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims abstract description 3
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 239000008096 xylene Substances 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 230000003746 surface roughness Effects 0.000 claims description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims 2
- 229920002799 BoPET Polymers 0.000 claims 1
- 239000005041 Mylar™ Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000007767 bonding agent Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 24
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 11
- 239000001301 oxygen Substances 0.000 abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 abstract description 11
- 230000004888 barrier function Effects 0.000 abstract description 10
- 238000005520 cutting process Methods 0.000 abstract description 6
- 230000003064 anti-oxidating effect Effects 0.000 abstract description 5
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 229920001225 polyester resin Polymers 0.000 description 4
- 239000004645 polyester resin Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920005990 polystyrene resin Polymers 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 235000012222 talc Nutrition 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
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Abstract
一种TiAl基合金高温双层隔氧包套制作方法，包括下述步骤：1、包套下料，根据被包覆TiAl基合金方坯的长、宽、高尺寸，用钛板切削出与所述方坯6个相对应的面板；2、粘贴，在TiAl基合金方坯6个面上均匀涂覆粘接剂，将所述面板粘贴于TiAl基合金方坯相应的表面；3、焊接，将相邻两面板接口焊接成一体，形成一个密封的整体包套；4、喷涂。对包套表面涂覆高温防氧化涂层。本发明可有效减缓坯料的温降，去除传统包套内部的含氧气氛，并隔绝外部空气中的氧化气氛与TiAl基合金进行接触，在高温变形过程中起到双层隔氧的作用；工艺简单，操作简易，可推广性强；制备出的TiAl基合金粘焊型双层隔氧包套经高温变形后表面质量完好、变形组织均匀，适用于TiAl基合金高温变形工业化生产。
A method for manufacturing a TiAl-based alloy high-temperature double-layer oxygen barrier sheath, comprising the following steps: 1. Cutting the sheath, according to the length, width and height of the covered TiAl-based alloy billet, cutting out the same size as the TiAl-based alloy billet with a titanium plate 6 corresponding panels of the billet; 2. pasting, evenly coating the adhesive on the 6 faces of the TiAl-based alloy billet, and pasting the panels on the corresponding surfaces of the TiAl-based alloy billet; 3. Welding , weld the interface of adjacent two panels into one, forming a sealed overall package; 4. Spraying. Coat the surface of the sheath with a high temperature anti-oxidation coating. The invention can effectively slow down the temperature drop of the billet, remove the oxygen-containing atmosphere inside the traditional sheath, and isolate the oxidizing atmosphere in the external air from contacting the TiAl-based alloy, and play the role of double-layer oxygen barrier in the high-temperature deformation process; The method is simple, easy to operate, and strong in generalization; the prepared TiAl-based alloy stick-welded double-layer oxygen barrier jacket has good surface quality and uniform deformation structure after high-temperature deformation, and is suitable for industrial production of TiAl-based alloy high-temperature deformation.
Description
技术领域 technical field
本发明公开了一种TiAl基合金高温双层隔氧包套制作方法。The invention discloses a method for manufacturing a TiAl-based alloy high-temperature double-layer oxygen-insulating sheath.
背景技术 Background technique
TiAl基合金具有高的弹性模量、低的密度、优的比强度、比刚度和在600～900℃具有较好的抗蠕变性能等特性，作为轻质高温结构材料，适用于航空航天、汽车等工业领域。但TiAl基合金的室温塑性和工艺塑性低，给其加工和成型带来了极大难度，制约了TiAl基合金在结构材料中广泛应用。国内外研究者先后对TiAl基合金的板材制备技术进行研究，提出防止合金在高温变形过程中氧化的形为和保证高的近等温状态等研究方向，包套变形成为TiAl基合金的研究热点。很多学者研究出不同的包套设计方案，但其工艺流程复杂、可操作性差，或仅局限于小样品的加工，应用前景不大。而且粘焊型双层隔氧包套的制备技术，目前还未有报道。TiAl-based alloy has the characteristics of high elastic modulus, low density, excellent specific strength, specific stiffness and good creep resistance at 600-900°C. As a lightweight high-temperature structural material, it is suitable for aerospace, Automotive and other industrial fields. However, the room temperature plasticity and process plasticity of TiAl-based alloys are low, which brings great difficulties to its processing and forming, which restricts the wide application of TiAl-based alloys in structural materials. Researchers at home and abroad have successively studied the sheet preparation technology of TiAl-based alloys, and proposed research directions such as preventing the oxidation of the alloy during high-temperature deformation and ensuring a high near-isothermal state. Sheath deformation has become a research hotspot for TiAl-based alloys. Many scholars have researched different sheath design schemes, but their technological processes are complicated, their operability is poor, or they are limited to the processing of small samples, and their application prospects are not great. And the preparation technology of stick-welded double-layer oxygen barrier sheath has not been reported yet.
发明内容 Contents of the invention
本发明的目的在于提供一种工艺方法简单、操作方便、经济适用、防氧化性能可靠、可有效保护TiAl基合金在高温变形时不被氧化的一种TiAl基合金高温双层隔氧包套制作方法。The object of the present invention is to provide a TiAl-based alloy high-temperature double-layer oxygen-barrier sheath that is simple in process, easy to operate, economical and applicable, reliable in oxidation resistance, and can effectively protect the TiAl-based alloy from being oxidized during high-temperature deformation. method.
一种TiAl基合金高温双层隔氧包套制作方法，包括下述步骤：A method for manufacturing a TiAl-based alloy high-temperature double-layer oxygen barrier jacket, comprising the following steps:
第一步：包套下料The first step: bag cutting
根据被包覆TiAl基合金方坯的长、宽、高尺寸，选用厚度为1～4mm的钛板切削出与TiAl基合金方坯6个相对应的面板；According to the length, width and height of the coated TiAl-based alloy billet, a titanium plate with a thickness of 1-4mm is selected to cut out 6 panels corresponding to the TiAl-based alloy billet;
第二步：粘贴Step Two: Paste
去除TiAl基合金方坯表面杂质，在TiAl基合金方坯6个面上均匀涂覆粘接剂，将第一步得到的面板粘贴于TiAl基合金方坯相应的表面；Remove impurities on the surface of the TiAl-based alloy billet, apply adhesive evenly on the 6 surfaces of the TiAl-based alloy billet, and paste the panel obtained in the first step on the corresponding surface of the TiAl-based alloy billet;
第三步：焊接Step Three: Soldering
将相邻两面板接口焊接成一体，形成一个密封的整体包套；Weld the interface of adjacent two panels together to form a sealed overall package;
第四步：喷涂Step Four: Spraying
对包套表面涂覆高温防氧化涂层。Coat the surface of the sheath with a high temperature anti-oxidation coating.
本发明中，所述TiAl基合金方坯表面粗糙度不高于3.2。In the present invention, the surface roughness of the TiAl-based alloy billet is not higher than 3.2.
本发明中，所述粘接剂由下述组分，按重量百分比组成：In the present invention, the adhesive is composed of the following components in percentage by weight:
聚酯树脂60～80；Polyester resin 60-80;
齐聚苯乙烯树脂5～20；Oligopolystyrene resin 5-20;
二甲苯树脂4～20；Xylene resin 4~20;
二叔丁基对甲酚0.1～3；Di-tert-butyl p-cresol 0.1~3;
滑石粉4～10；Talc powder 4~10;
TiO 0.1～10。TiO 0.1～10.
本发明中，所述焊接采用氩弧焊机。In the present invention, the welding uses an argon arc welding machine.
本发明中，所述高温防氧化涂层使用温度为1200～1300℃。In the present invention, the service temperature of the high-temperature anti-oxidation coating is 1200-1300°C.
本发明由于采用上述工艺方法，制作的粘焊型双层隔氧包套，针对TiAl基合金的变形特性，采用先进的粘焊型双层隔氧包套技术，有效预防轧制过程中TiAl基合金的高温氧化行为，并减缓坯料的温降，为TiAl基合金的热变形行营造出近等温无氧化气氛的环境。通过上述方法制作出的高温轧制用粘焊型双层隔氧包套，可在1300℃以内对TiAl基合金进行有效的防护。Due to the adoption of the above process, the present invention produces a stick-welded double-layer oxygen-insulating sheath, aiming at the deformation characteristics of the TiAl-based alloy, and adopts an advanced stick-welding-type double-layer oxygen-insulating sheath technology to effectively prevent TiAl-based The high-temperature oxidation behavior of the alloy slows down the temperature drop of the billet, creating a near-isothermal non-oxidizing atmosphere for the thermal deformation of the TiAl-based alloy. The adhesive-welded double-layer oxygen barrier sheath for high-temperature rolling produced by the above method can effectively protect the TiAl-based alloy within 1300°C.
本发明的优点在于：The advantages of the present invention are:
1)工艺简单，设备要求简易，可操作性强，成本低廉，适用范围广，可用于大小板材的高温防氧化包套制作；1) The process is simple, the equipment requirements are simple, the operability is strong, the cost is low, the application range is wide, and it can be used for high-temperature anti-oxidation sheathing of large and small plates;
2)所采用的粘结剂成分不会腐蚀TiAl基合金，对其没有破坏和污染；2) The binder component used will not corrode the TiAl-based alloy, and will not damage or pollute it;
3)所采用的粘结剂将包套材料粘于坯料表面起到固定的作用，有利于焊接的操作；3) The adhesive used will stick the sheath material to the surface of the blank to fix it, which is beneficial to the welding operation;
4)所采用的粘结剂在低温状态排除包套内空气并控制了其包套内的高温氧化形为，高温状态下粘结的颗粒起到一定的润滑作用，有利于包套的协调变形；4) The binder used eliminates the air in the sheath at low temperature and controls the high-temperature oxidation form in the sheath. The bonded particles in the high-temperature state have a certain lubricating effect, which is conducive to the coordinated deformation of the sheath ;
5)包套坯料在热变形加工后，由于有粘结隔离层，包套材料与TiAl基合金可轻易脱离。5) After thermal deformation processing of the jacket blank, the jacket material and the TiAl-based alloy can be easily separated due to the bonded isolation layer.
综上所述，本发明的TiAl基合金高温变形用粘焊型双层隔氧包套，设计合理，工艺简单，操作简单可行，成本低，制备出的TiAl基合金粘焊型双层隔氧包套经高温变形后表面质量完好、变形组织均匀，可有效预防变形过程中TiAl基合金的高温氧化行为，并减缓坯料的温降，有利于TiAl基合金的热变形行为，避免其因大的温降和氧化所引起的开裂现象，并为其它难变形金属或金属间化合物的防热氧化行为提供技术参考。To sum up, the stick-welded double-layer oxygen barrier jacket for TiAl-based alloy high-temperature deformation of the present invention has reasonable design, simple process, simple and feasible operation, and low cost. The prepared TiAl-based alloy stick-welded double-layer oxygen barrier After high-temperature deformation, the surface quality of the sheath is intact and the deformation structure is uniform, which can effectively prevent the high-temperature oxidation behavior of the TiAl-based alloy during the deformation process, and slow down the temperature drop of the billet, which is beneficial to the thermal deformation behavior of the TiAl-based alloy and avoids its large size. Cracking caused by temperature drop and oxidation, and provide technical reference for the thermal oxidation resistance of other difficult-to-deform metals or intermetallic compounds.
附图说明 Description of drawings
附图1为本发明的包套样品示意图。Accompanying drawing 1 is the schematic diagram of the package sample of the present invention.
附图2为采用本发明包套的TiAl基合金轧制后样品宏观图。Accompanying drawing 2 is the macrograph of the sample after rolling of the TiAl-based alloy sheathed by the present invention.
附图3为采用本发明包套的TiAl基合金轧制样品的显微组织。Accompanying drawing 3 is the microstructure of the TiAl-based alloy rolled sample using the sheath of the present invention.
图中：1-合金方坯，2-包套，3-焊缝，4--高温防氧化涂层。In the figure: 1-alloy billet, 2-sheath, 3-weld seam, 4-high temperature anti-oxidation coating.
具体实施方式 Detailed ways
实施例1：采用粉末冶金方法制出Ti-47Al-2Nb-2Cr-(W、C)(at％)合金坯料，经切削的方法制成方坯，并采用图1所示的工艺流程进行双层隔氧包套包覆，其中包套材料为3mm厚的钛板，粘结剂的成分为聚酯树脂80、齐聚苯乙烯树脂5、二甲苯树脂6、二叔丁基对甲酚3、滑石粉5、TiO 1。经1240℃预热、不高于0.7s-1应变速率6道次轧制后的样品如图2，制得总变形量为68％、无开裂现象的TiAl基合金板材。Embodiment 1: adopt powder metallurgy method to produce Ti-47Al-2Nb-2Cr-(W, C) (at%) alloy billet, make square billet through the method for cutting, and adopt the technological process shown in Fig. 1 to carry out double Layers of oxygen barrier sheath coating, wherein the sheath material is a 3mm thick titanium plate, the composition of the binder is polyester resin 80, polystyrene resin 5, xylene resin 6, di-tert-butyl p-cresol 3 , Talc 5, TiO 1. The sample after preheating at 1240°C and rolling for 6 passes with a strain rate not higher than 0.7s -1 is shown in Figure 2. A TiAl-based alloy sheet with a total deformation of 68% and no cracking was obtained.
实施例2：采用粉末冶金方法制出Ti-48Al-2Nb-2Cr-(W、C)(at％)合金坯料，经切削的方法制成方坯，并采用图1所示的工艺流程进行双层隔氧包套包覆，其中包套材料为1.2mm厚的钛板，粘结剂的成分为聚酯树脂60、齐聚苯乙烯树脂20、二甲苯树脂4、二叔丁基对甲酚0.1、滑石粉5.9、TiO 10。经1240℃预热、不高于0.65s-1应变速率6道次轧制后的样品显微组织如图3所示，制得总变形量为65％、无开裂现象的TiAl基合金板材。Embodiment 2: adopt powder metallurgy method to produce Ti-48Al-2Nb-2Cr-(W, C) (at%) alloy billet, make square billet through the method for cutting, and adopt the process flow shown in Fig. 1 to carry out double Coated with a layer of oxygen barrier sheath, wherein the sheath material is a 1.2mm thick titanium plate, the composition of the binder is polyester resin 60, polystyrene resin 20, xylene resin 4, di-tert-butyl p-cresol 0.1, talcum powder 5.9, TiO 10. The microstructure of the sample after preheating at 1240°C and rolling for 6 passes with a strain rate not higher than 0.65s -1 is shown in Figure 3. A TiAl-based alloy sheet with a total deformation of 65% and no cracking was obtained.
实施例3：采用粉末冶金方法制出Ti-46Al-2Nb-2Cr-(W、C)(at％)合金坯料，经切削的方法制成方坯，并采用图1所示的工艺流程进行双层隔氧包套包覆，其中包套材料为2mm厚的钛板，粘结剂的成分为聚酯树脂60、齐聚苯乙烯树脂8、二甲苯树脂20、二叔丁基对甲酚3、滑石粉4、TiO 5。经1240℃预热、不高于0.3s-1应变速率8道次轧制后，制得总变形量为80％、无开裂现象的TiAl基合金板材。Embodiment 3: Adopt powder metallurgy method to produce Ti-46Al-2Nb-2Cr-(W, C) (at%) alloy billet, make square billet through the method for cutting, and adopt the process flow shown in Fig. 1 to carry out double Oxygen-barrier sheath coating, in which the sheath material is a 2mm thick titanium plate, and the composition of the binder is polyester resin 60, polystyrene resin 8, xylene resin 20, di-tert-butyl p-cresol 3 , Talc 4, TiO 5. After preheating at 1240°C and rolling for 8 passes at a strain rate not higher than 0.3s -1 , a TiAl-based alloy plate with a total deformation of 80% and no cracking was obtained.
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| CN106189982A (en) * | 2016-08-29 | 2016-12-07 | 强新正品（苏州）环保材料科技有限公司 | A kind of polyester type hot melt adhesive |
| CN106521196B (en) * | 2016-11-04 | 2018-02-13 | 西北有色金属研究院 | A kind of preparation method of γ TiAl-base alloys bar |
| CN108115365A (en) * | 2017-12-20 | 2018-06-05 | 西安西工大超晶科技发展有限责任公司 | A kind of jacket cogging forging molding process of titanium-aluminium alloy ingot casting |
| CN112552013B (en) * | 2020-12-23 | 2022-06-03 | 山东鲁阳节能材料股份有限公司 | Adhesive for high-temperature self-adhesive refractory blanket, preparation method of adhesive and high-temperature self-adhesive refractory blanket |
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| JPH08336929A (en) * | 1995-06-09 | 1996-12-24 | Sumitomo Metal Ind Ltd | Titanium / aluminum clad plate for building materials |
| DE19747257C2 (en) * | 1997-10-25 | 2001-04-26 | Geesthacht Gkss Forschung | Device for encapsulating blanks made of high-temperature metallic alloys |
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