JP6235721B2 - 高張力二相ステンレス鋼の生産方法 - Google Patents
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Description
Claims (14)
- 変形によるTRIP(変態誘起塑性)効果を有する高張力フェライト−オーステナイト二相ステンレス鋼の生産方法において、950〜1150℃の温度範囲で第1の熱処理を施した後に、前記フェライト−オーステナイト二相ステンレス鋼を少なくとも10%の圧延率で変形させて成形性を維持したままで少なくとも1000MPaの高レベル引張強度を得て、
前記変形後に第2の熱処理を100℃〜420℃の温度範囲内で1秒〜20分の間行い、降伏強度をさらに向上させることを特徴とする生産方法。 - 請求項1に記載の方法において、前記フェライト−オーステナイト二相ステンレス鋼の変形を20%の圧延率で行い、伸び(A 50 )を少なくとも15%にすることを特徴とする方法。
- 請求項1に記載の方法において、前記フェライト−オーステナイト二相ステンレス鋼の変形を40%の圧延率で行い、少なくとも1300MPaの引張強度レベルを得ることを特徴とする方法。
- 請求項3に記載の方法において、前記40%の圧延率でのフェライト−オーステナイト二相ステンレス鋼の変形では、前記伸び(A50)は少なくとも4.5%になることを特徴とする方法。
- 請求項1ないし4のいずれかに記載の方法において、変形の前(Rd50%(0%))および後(Rd50%(TR%))の疲労限度の比Rd50%(TR%)/Rd50%(0%)は1.2を超えることを特徴とする方法。
- 請求項1または2に記載の方法において、第2の熱処理を行うことによって、少なくとも15%の伸び(A50)を維持したままで強度をさらに向上させることを特徴とする方法。
- 請求項1ないし6のいずれかに記載の方法において、第2の熱処理を175℃〜250℃の温度範囲内で行うことを特徴とする方法。
- 請求項1ないし7のいずれかに記載の方法において、第2の熱処理は5分〜15分の間行うことを特徴とする方法。
- 請求項1ないし8のいずれかに記載の方法において、前記フェライト−オーステナイト二相ステンレス鋼の変形を調質圧延によって行うことを特徴とする方法。
- 請求項1ないし8のいずれかに記載の方法において、前記フェライト−オーステナイト二相ステンレス鋼の変形をテンションレベリングによって行うことを特徴とする方法。
- 請求項1ないし8のいずれかに記載の方法において、前記フェライト−オーステナイト二相ステンレス鋼の変形をローラレベリングによって行うことを特徴とする方法。
- 請求項1ないし8のいずれかに記載の方法において、前記フェライト−オーステナイト二相ステンレス鋼の変形を絞りによって行うことを特徴とする方法。
- 請求項1ないし12のいずれかに記載の方法において、前記フェライト−オーステナイト二相ステンレス鋼は、重量%で、0.05%未満の炭素(C)、0.2〜0.7%のケイ素(Si)、2〜5%のマンガン(Mn)、19〜20.5%のクロム(Cr)、0.8〜1.5%のニッケル(Ni)、0.6%未満のモリブデン(Mo)、1%未満の銅(Cu)、0.16〜0.26%の窒素(N)を含有し、C+Nの合計量は0.2〜0.29%、硫黄(S)は0.010重量%未満であり、リン(P)は0.040重量%未満でS+Pの合計量が0.04重量%未満になるようにし、酸素(O)の総量は100ppm未満であり、任意で添加元素、すなわち、0〜0.5%のタングステン(W)、0〜0.2%のニオブ(Nb)、0〜0.1%のチタン(Ti)、0〜0.2%のバナジウム(V)、0〜0.5%のコバルト(Co)、0〜50ppmのホウ素(B)および0〜0.04%のアルミニウム(Al)のうちの1以上を含有し、残部は鉄(Fe)およびステンレス鋼に発生する不可避不純物であることを特徴とする方法。
- 請求項1ないし12のいずれかに記載の方法において、前記フェライト−オーステナイト二相ステンレス鋼は、重量%で、0.05%未満の炭素(C)、0.2〜0.7%のケイ素(Si)、2〜5%のマンガン(Mn)、19〜20.5%のクロム(Cr)、0.8〜1.5%のニッケル(Ni)、0.6%未満のモリブデン(Mo)、1%未満の銅(Cu)、0.16〜0.26%の窒素(N)を含有し、任意で添加元素、すなわち、0〜0.5%のタングステン(W)、0〜0.2%のニオブ(Nb)、0〜0.1%のチタン(Ti)、0〜0.2%のバナジウム(V)、0〜0.5%のコバルト(Co)、0〜50ppmのホウ素(B)および0〜0.04%のアルミニウム(Al)のうちの1以上を含有し、残部は鉄(Fe)およびステンレス鋼に発生する不可避不純物であることを特徴とする方法。
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20136257 | 2013-12-13 | ||
| FI20136257A FI127046B (en) | 2013-12-13 | 2013-12-13 | METHOD OF PRODUCING DUPLEX STAINLESS STEEL WITH HIGH RELIABILITY |
| FI20145573A FI125527B (en) | 2014-06-17 | 2014-06-17 | METHOD FOR THE PRODUCTION OF HIGH-STRENGTH DUPLEX STAINLESS STEEL |
| FI20145573 | 2014-06-17 | ||
| PCT/FI2014/050978 WO2015086903A1 (en) | 2013-12-13 | 2014-12-10 | Method for producing high-strength duplex stainless steel |
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| JP2017503919A JP2017503919A (ja) | 2017-02-02 |
| JP6235721B2 true JP6235721B2 (ja) | 2017-11-22 |
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| US (1) | US10407750B2 (ja) |
| EP (1) | EP3080311B1 (ja) |
| JP (1) | JP6235721B2 (ja) |
| KR (1) | KR101818386B1 (ja) |
| CN (1) | CN105934525B (ja) |
| AU (1) | AU2014363321B2 (ja) |
| BR (1) | BR112016013525B1 (ja) |
| CA (1) | CA2932068C (ja) |
| EA (1) | EA033404B1 (ja) |
| ES (1) | ES2769782T3 (ja) |
| MX (1) | MX387987B (ja) |
| MY (1) | MY183570A (ja) |
| SI (1) | SI3080311T1 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101746404B1 (ko) * | 2015-12-23 | 2017-06-14 | 주식회사 포스코 | 내식성 및 가공성이 향상된 린 듀플렉스 스테인리스강 및 이의 제조 방법 |
| TWI580799B (zh) * | 2016-06-08 | 2017-05-01 | China Steel Corp | High strength and high elongation hot dip galvanized steel manufacturing method |
| DE102016110661A1 (de) * | 2016-06-09 | 2017-12-14 | Salzgitter Flachstahl Gmbh | Verfahren zur Herstellung eines kaltgewalzten Stahlbandes aus einem hochfesten, manganhaltigen Stahl |
| KR20180032430A (ko) * | 2016-09-22 | 2018-03-30 | 주식회사 성일튜브 | 차량용 고압 연료 튜브 및 그 어셈블리 |
| US11248285B2 (en) * | 2017-05-22 | 2022-02-15 | Sandvik Intellectual Property Ab | Duplex stainless steel |
| JP6986455B2 (ja) * | 2018-01-16 | 2021-12-22 | 鈴木住電ステンレス株式会社 | プレストレストコンクリート用緊張材用の二相ステンレス鋼線材、二相ステンレス鋼線及びプレストレストコンクリート用緊張材 |
| CN112893790B (zh) * | 2021-01-18 | 2021-12-14 | 燕山大学 | 一种基于铸轧短流程的匀细双相不锈钢薄带及其制备方法 |
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| JPH0742550B2 (ja) * | 1990-10-09 | 1995-05-10 | 新日本製鐵株式会社 | 強度、延性の優れたステンレス鋼 |
| FR2780482B1 (fr) | 1998-06-30 | 2000-07-21 | Coflexip | Procede de fabrication d'une carcasse metallique pour conduite flexible ou ombilical |
| KR100429360B1 (ko) * | 1999-05-07 | 2004-04-29 | 마쯔시다덴기산교 가부시키가이샤 | 섀도우마스크 제조방법 |
| SE517449C2 (sv) * | 2000-09-27 | 2002-06-04 | Avesta Polarit Ab Publ | Ferrit-austenitiskt rostfritt stål |
| CN1234897C (zh) * | 2001-04-27 | 2006-01-04 | 住友金属工业株式会社 | 金属垫片及其加工材料和它们的生产方法 |
| JP5100144B2 (ja) * | 2007-02-08 | 2012-12-19 | 日新製鋼株式会社 | バネ用鋼板およびそれを用いたバネ材並びにそれらの製造法 |
| JP5211841B2 (ja) * | 2007-07-20 | 2013-06-12 | 新日鐵住金株式会社 | 二相ステンレス鋼管の製造方法 |
| JP5388589B2 (ja) * | 2008-01-22 | 2014-01-15 | 新日鐵住金ステンレス株式会社 | 加工性と衝撃吸収特性に優れた構造部材用フェライト・オーステナイト系ステンレス鋼板およびその製造方法 |
| WO2010082395A1 (ja) * | 2009-01-19 | 2010-07-22 | 住友金属工業株式会社 | 二相ステンレス鋼管の製造方法 |
| JP4462454B1 (ja) * | 2009-01-19 | 2010-05-12 | 住友金属工業株式会社 | 二相ステンレス鋼管の製造方法 |
| CN101812647B (zh) * | 2009-02-25 | 2012-10-10 | 宝山钢铁股份有限公司 | 一种双相不锈钢及其制造方法 |
| FR2945099B1 (fr) | 2009-05-04 | 2011-06-03 | Technip France | Procede de fabrication d'une conduite tubulaire flexible de grande longueur |
| JP5597006B2 (ja) * | 2010-03-26 | 2014-10-01 | 新日鐵住金ステンレス株式会社 | 構造部材用高強度および高延性オーステナイト系ステンレス鋼板およびその製造方法 |
| KR20120132691A (ko) | 2010-04-29 | 2012-12-07 | 오또꿈뿌 오와이제이 | 높은 성형성을 구비하는 페라이트-오스테나이트계 스테인리스 강의 제조 및 사용 방법 |
| WO2012052626A1 (fr) * | 2010-10-21 | 2012-04-26 | Arcelormittal Investigacion Y Desarrollo, S.L. | Tole d'acier laminee a chaud ou a froid, don procede de fabrication et son utilisation dans l'industrie automobile |
| CN102605284B (zh) * | 2011-01-25 | 2014-05-07 | 宝山钢铁股份有限公司 | 一种双相不锈钢及其制造方法 |
| FI126574B (fi) | 2011-09-07 | 2017-02-28 | Outokumpu Oy | Dupleksinen ruostumaton teräs |
| JP5869922B2 (ja) * | 2012-03-09 | 2016-02-24 | 新日鐵住金ステンレス株式会社 | 面内異方性が小さいフェライト・オーステナイト2相ステンレス鋼板およびその製造方法 |
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- 2014-12-10 SI SI201431462T patent/SI3080311T1/sl unknown
- 2014-12-10 CA CA2932068A patent/CA2932068C/en active Active
- 2014-12-10 US US15/103,357 patent/US10407750B2/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2017503919A (ja) | 2017-02-02 |
| AU2014363321A1 (en) | 2016-06-23 |
| BR112016013525B1 (pt) | 2021-03-30 |
| CA2932068C (en) | 2023-01-03 |
| ES2769782T3 (es) | 2020-06-29 |
| WO2015086903A1 (en) | 2015-06-18 |
| US10407750B2 (en) | 2019-09-10 |
| AU2014363321B2 (en) | 2019-01-31 |
| MY183570A (en) | 2021-02-26 |
| EP3080311A1 (en) | 2016-10-19 |
| MX387987B (es) | 2025-03-19 |
| EP3080311A4 (en) | 2017-07-26 |
| CN105934525B (zh) | 2018-11-13 |
| MX2016007589A (es) | 2016-09-14 |
| EP3080311B1 (en) | 2019-10-30 |
| US20160319391A1 (en) | 2016-11-03 |
| EA201690955A1 (ru) | 2016-11-30 |
| CA2932068A1 (en) | 2015-06-18 |
| KR20160096685A (ko) | 2016-08-16 |
| CN105934525A (zh) | 2016-09-07 |
| TW201527540A (zh) | 2015-07-16 |
| EA033404B1 (ru) | 2019-10-31 |
| KR101818386B1 (ko) | 2018-01-12 |
| TWI655293B (zh) | 2019-04-01 |
| SI3080311T1 (sl) | 2020-02-28 |
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