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公开(公告)号：US20170114433A9
公开(公告)日：2017-04-27
申请号：US13747451
申请日：2013-01-22
CPC分类号： C22C38/14 , C22C38/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12
摘要： A cold rolled, annealed TRIP steel sheet which has a composition including (in wt. %): C: 0.1-0.3; Mn: 4-10, Al: 0.05-5, Si: 0.05-5; and Nb: 0.008-0.1, the remainder being iron and inevitable residuals. The cold rolled sheet has an ultimate tensile strength of at least 1000 MPa, and a total elongation of at least 15%. The cold rolled sheet may have at least 20% retained austenite in its microstructure and may have greater than 50% lath-type annealed ferrite structure. The cold rolled sheet may have an ultra fine grain size of less than 5 micron for the retained austenite and ferrite.
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2.发明申请Ultra Fine-Grained Advanced High Strength Steel Sheet Having Superior Formability 有权超细晶高级高强度钢板具有优异的成型性公开(公告)号：US20140205488A1
公开(公告)日：2014-07-24
申请号：US13747451
申请日：2013-01-22
CPC分类号： C22C38/14 , C22C38/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12
摘要： A cold rolled, annealed TRIP steel sheet which has a composition including (in wt. %): C: 0.1-0.3; Mn: 4-10, Al: 0.05-5, Si: 0.05-5; and Nb: 0.008-0.1, the remainder being iron and inevitable residuals. The cold rolled sheet has an ultimate tensile strength of at least 1000 MPa, and a total elongation of at least 15%. The cold rolled sheet may have at least 20% retained austenite in its microstructure and may have greater than 50% lath-type annealed ferrite structure. The cold rolled sheet may have an ultra fine grain size of less than 5 micron for the retained austenite and ferrite.
摘要翻译： 冷轧退火TRIP钢板，其组成包括（重量％）：C：0.1-0.3; Mn：4-10，Al：0.05-5，Si：0.05-5; 和Nb：0.008-0.1，其余为铁和不可避免的残留物。 冷轧板具有至少1000MPa的极限拉伸强度和至少15％的总伸长率。 冷轧板在其微结构中可具有至少20％的残余奥氏体，并且可具有大于50％的板条型退火铁素体结构。 对于残留奥氏体和铁素体，冷轧板可以具有小于5微米的超细晶粒度。
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