BR9811059A - Aço de baixa liga - Google Patents

Aço de baixa liga

Info

Publication number
BR9811059A
BR9811059A BR9811059-4A BR9811059A BR9811059A BR 9811059 A BR9811059 A BR 9811059A BR 9811059 A BR9811059 A BR 9811059A BR 9811059 A BR9811059 A BR 9811059A
Authority
BR
Brazil
Prior art keywords
temperature
plate
temperature range
austenite
quenching
Prior art date
Application number
BR9811059-4A
Other languages
English (en)
Inventor
Jayoung Koo
Michael J Luton
Narasimha-Rao V Bangaru
Clifford W Petersen
Hiroshi Tamehiro
Hitoshi Asahi
Takuya Hara
Yoshio Terada
Original Assignee
Exxonmobil Upstream Res Co
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Exxonmobil Upstream Res Co, Nippon Steel Corp filed Critical Exxonmobil Upstream Res Co
Publication of BR9811059A publication Critical patent/BR9811059A/pt

Links

Classifications

    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

''AçO DE BAIXA LIGA''. Aço de resistência ultra-elevada, essencialmente isento de boro possuindo uma resistência à tração de pelo menos aproximadamente 900 MPa, uma tenacidade conforme medida pelo teste de impacto de entalhe em V Charpy a -40° C de pelo menos aproximadamente 120 Joules, e uma microestrutura que compreende predominantemente bainita inferior de fina granulação, martensita em barrotes de fina granulação, ou misturas das mesmas, transformadas de grãos de austenita substancialmente não recristalizados, e compreendendo ferro e percentuais em peso especificados dos aditivos: carbono, silício, manganês, cobre, níquel, nióbio, vanádio, molibdênio, cromo, titânio, alumínio, cálcio, Metais de Terras Raras, e magnésio, é preparado pelo aquecimento de uma placa de aço até uma temperatura adequada; reduzindo a placa para formar uma chapa em um ou mais passes de laminação a quente (10) em uma primeira faixa de temperatura na qual a austenita se recristaliza; reduzindo ainda mais a mencionada chapa em um ou mais passes de laminação a quente (10) em uma segunda faixa de temperatura abaixo da mencionada primeira faixa de temperatura e acima da temperatura na qual a austenita começa a se transformar em ferrita durante o resfriamento; resfriando bruscamente (12) a mencionada chapa até uma Temperatura de Parada do Resfriamento Brusco (16); e interrompendo esse mencionado resfriamento brusco e permitindo à mencionada chapa resfriar ao ar (18) até a temperatura ambiente.
BR9811059-4A 1997-07-28 1998-07-28 Aço de baixa liga BR9811059A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5396497P 1997-07-28 1997-07-28
PCT/US1998/015630 WO1999005334A1 (en) 1997-07-28 1998-07-28 Ultra-high strength, weldable, essentially boron-free steels wit h superior toughness

Publications (1)

Publication Number Publication Date
BR9811059A true BR9811059A (pt) 2000-09-19

Family

ID=21987778

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9811059-4A BR9811059A (pt) 1997-07-28 1998-07-28 Aço de baixa liga

Country Status (14)

Country Link
US (1) US6224689B1 (pt)
EP (1) EP1025271B1 (pt)
JP (1) JP4105380B2 (pt)
KR (1) KR100375085B1 (pt)
CN (1) CN1087357C (pt)
AT (1) ATE307912T1 (pt)
AU (1) AU736152B2 (pt)
BR (1) BR9811059A (pt)
CA (1) CA2295586C (pt)
DE (1) DE69832088T2 (pt)
ES (1) ES2251096T3 (pt)
RU (1) RU2215813C2 (pt)
UA (1) UA57798C2 (pt)
WO (1) WO1999005334A1 (pt)

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US6852175B2 (en) * 2001-11-27 2005-02-08 Exxonmobil Upstream Research Company High strength marine structures
JP2005525509A (ja) 2001-11-27 2005-08-25 エクソンモービル アップストリーム リサーチ カンパニー 天然ガス車両のためのｃｎｇ貯蔵及び送出システム
WO2003066921A1 (fr) * 2002-02-07 2003-08-14 Jfe Steel Corporation Tole d'acier haute resistance et procede de production
CA2676781C (en) * 2003-10-17 2012-04-10 Nippon Steel Corporation High-strength steel sheets excellent in hole-expandability and ductility
JP4781767B2 (ja) * 2005-10-05 2011-09-28 三菱重工業株式会社 高温用構造体の製造方法
CA2627171A1 (en) * 2005-10-24 2007-05-03 Narasimha-Rao V. Bangaru High strength dual phase steel with low yield ratio, high toughness and superior weldability
JP4751224B2 (ja) * 2006-03-28 2011-08-17 新日本製鐵株式会社 靭性と溶接性に優れた機械構造用高強度シームレス鋼管およびその製造方法
KR100851189B1 (ko) * 2006-11-02 2008-08-08 주식회사 포스코 저온인성이 우수한 초고강도 라인파이프용 강판 및 그제조방법
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KR101018131B1 (ko) * 2007-11-22 2011-02-25 주식회사 포스코 저온인성이 우수한 고강도 저항복비 건설용 강재 및 그제조방법
JP4700769B2 (ja) 2009-05-19 2011-06-15 新日本製鐵株式会社 溶接用鋼材およびその製造方法
TWI365915B (en) * 2009-05-21 2012-06-11 Nippon Steel Corp Steel for welded structure and producing method thereof
CA2775031C (en) * 2009-09-30 2015-03-24 Jfe Steel Corporation Low yield ratio, high strength and high uniform elongation steel plate and method for manufacturing the same
US9011936B2 (en) * 2009-10-16 2015-04-21 Naturex, S.A. Extract of Rosmarinus officinalis L. leaves for pharmaceutical applications
CN101805820A (zh) * 2010-04-22 2010-08-18 山西太钢不锈钢股份有限公司 一种塑料模具钢的预硬化处理方法
CN102011068B (zh) * 2010-12-13 2012-07-25 首钢总公司 一种800MPa级低屈强比结构钢板及其生产方法
US10974349B2 (en) * 2010-12-17 2021-04-13 Magna Powertrain, Inc. Method for gas metal arc welding (GMAW) of nitrided steel components using cored welding wire
CN103060690A (zh) 2013-01-22 2013-04-24 宝山钢铁股份有限公司 一种高强度钢板及其制造方法
WO2015088523A1 (en) * 2013-12-11 2015-06-18 ArcelorMittal Investigación y Desarrollo, S.L. Cold rolled and annealed steel sheet
CN105506494B (zh) 2014-09-26 2017-08-25 宝山钢铁股份有限公司 一种屈服强度800MPa级高韧性热轧高强钢及其制造方法
JP6314921B2 (ja) * 2015-06-25 2018-04-25 Ｊｆｅスチール株式会社 曲げ加工性に優れた低降伏比高張力厚鋼板およびその製造方法
KR20170074319A (ko) * 2015-12-21 2017-06-30 주식회사 포스코 저온인성 및 수소유기균열 저항성이 우수한 후판 강재 및 그 제조방법
CN106906413A (zh) * 2015-12-22 2017-06-30 宝山钢铁股份有限公司 一种大线能量焊接热影响区韧性优异的厚钢板及其制造方法
KR101736638B1 (ko) * 2015-12-23 2017-05-30 주식회사 포스코 수소유기 균열 (hic) 저항성이 우수한 압력용기용 강재 및 그 제조방법
CN106636590B (zh) * 2016-12-02 2018-04-03 燕山大学 一种可替代调质处理的中碳钢热机械处理方法
CN114959439B (zh) * 2021-02-25 2023-05-09 宝山钢铁股份有限公司 一种高强韧贝氏体地质钻探管及其制造方法

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Also Published As

Publication number Publication date
UA57798C2 (uk) 2003-07-15
DE69832088D1 (de) 2005-12-01
ES2251096T3 (es) 2006-04-16
DE69832088T2 (de) 2006-07-13
US6224689B1 (en) 2001-05-01
AU736152B2 (en) 2001-07-26
EP1025271B1 (en) 2005-10-26
JP2001511481A (ja) 2001-08-14
ATE307912T1 (de) 2005-11-15
EP1025271A1 (en) 2000-08-09
JP4105380B2 (ja) 2008-06-25
CA2295586C (en) 2007-05-15
KR20010022331A (ko) 2001-03-15
EP1025271A4 (en) 2001-07-18
CN1265711A (zh) 2000-09-06
WO1999005334A1 (en) 1999-02-04
CA2295586A1 (en) 1999-02-04
RU2215813C2 (ru) 2003-11-10
AU8667498A (en) 1999-02-16
CN1087357C (zh) 2002-07-10
KR100375085B1 (ko) 2003-03-07

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Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 28.07.2018