公开(公告)号：US09464337B2

公开(公告)日：2016-10-11

申请号：US13375132

申请日：2010-05-28

申请人： Yoichi Mukai ,  Kouji Kasuya ,  Michiharu Nakaya ,  Michitaka Tsunezawa ,  Fumio Yuse ,  Junichiro Kinugasa ,  Sandra Traint ,  Andreas Pichler

发明人： Yoichi Mukai ,  Kouji Kasuya ,  Michiharu Nakaya ,  Michitaka Tsunezawa ,  Fumio Yuse ,  Junichiro Kinugasa ,  Sandra Traint ,  Andreas Pichler

IPC分类号： C21D6/00 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/00 ,  C22C38/38 ,  C21D9/46 ,  C21D8/02 ,  C22C38/02 ,  C22C38/06 ,  C22C38/14

CPC分类号： C21D9/46 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0252 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/38

摘要： Disclosed is a high strength steel sheet having excellent hydrogen embrittlement resistance. The steel sheet has a tensile strength of 1180 MPa or more, and satisfies the following conditions: with respect to an entire metallographic structure thereof, bainite, bainitic ferrite and tempered martensite account for 85 area % or more in total; retained austenite accounts for 1 area % or more; and fresh martensite accounts for 5 area % or less (including 0 area %).

摘要翻译： 公开了耐氢脆性优异的高强度钢板。 钢板的拉伸强度为1180MPa以上，满足以下条件：相对于其整个金相组织，贝氏体，贝氏体铁素体和回火马氏体总计占85面积％以上。 残余奥氏体占1面积％以上; 新鲜马氏体占5面积％以下（含0面积％）。

公开(公告)号：US08349471B2

公开(公告)日：2013-01-08

申请号：US12718397

申请日：2010-03-05

申请人： Michitaka Tsunezawa ,  Yuichi Futamura ,  Masaaki Miura

发明人： Michitaka Tsunezawa ,  Yuichi Futamura ,  Masaaki Miura

IPC分类号： B32B15/04 ,  B32B15/18 ,  C22C38/00

CPC分类号： C22C38/00 ,  Y10T428/12799 ,  Y10T428/12972

摘要： A high-strength cold-rolled steel sheet with improved TS-EL balance, springback value, workability and shape freezing properties having: a steel content including 0.10-0.20 mass % C, 0.5-2.5 mass % Si, 0.5-2.25 mass % Mn, and 0.01-0.10 mass % Al; a structure comprising (A) a mother phase structure of ferrite and (B) a second phase structure of retained austenite optionally including martensite; and satisfying the following expressions (1) and (2): (Vf×Vγ×Cγ×dis)/dia≧300  (1), dis≧1.0 μm  (2); where Vf (%) is the volume fraction of the ferrite, Vγ (%) is the volume fraction of the retained austenite, Cγ (mass %) is the carbon content in the retained austenite, dis (μm) is the shortest distance between the second phase structures, and dia (μm) is the average grain size of the second phase structures.

摘要翻译： 具有TS-EL平衡，回弹值，可加工性和形状冷冻性能改善的高强度冷轧钢板，其具有：含有0.10-0.20质量％C，0.5-2.5质量％Si，0.5-2.25质量％Mn的钢含量 ，0.01-0.10质量％Al; 包括（A）铁素体的母相结构和（B）任选包括马氏体的残余奥氏体的第二相组织的结构; 满足以下表达式（1）和（2）：（Vf×Vγ×Cγ×dis）/dia≥300（1），dis≥1.0μm（2）; 其中Vf（％）是铁素体的体积分数，Vγ（％）是残留奥氏体的体积分数，Cγ（质量％）是残留奥氏体中的碳含量，dis（μm）是 第二相结构，dia（μm）是第二相结构的平均晶粒尺寸。

公开(公告)号：US20120132327A1

公开(公告)日：2012-05-31

申请号：US13375132

申请日：2010-05-28

申请人： Yoichi Mukai ,  Kouji Kasuya ,  Michiharu Nakaya ,  Michitaka Tsunezawa ,  Fumio Yuse ,  Junichiro Kinugasa ,  Sandra Traint ,  Andreas Pichler

发明人： Yoichi Mukai ,  Kouji Kasuya ,  Michiharu Nakaya ,  Michitaka Tsunezawa ,  Fumio Yuse ,  Junichiro Kinugasa ,  Sandra Traint ,  Andreas Pichler

IPC分类号： C21D6/00 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/00 ,  C22C38/38

CPC分类号： C21D9/46 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0252 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/38

摘要： Disclosed is a high strength steel sheet having excellent hydrogen embrittlement resistance. The steel sheet has a tensile strength of 1180 MPa or more, and satisfies the following conditions: with respect to an entire metallographic structure thereof, bainite, bainitic ferrite and tempered martensite account for 85 area % or more in total; retained austenite accounts for 1 area % or more; and fresh martensite accounts for 5 area % or less (including 0 area %).

摘要翻译： 公开了耐氢脆性优异的高强度钢板。 钢板的拉伸强度为1180MPa以上，满足以下条件：相对于其整个金相组织，贝氏体，贝氏体铁素体和回火马氏体总计占85面积％以上。 残余奥氏体占1面积％以上; 新鲜马氏体占5面积％以下（含0面积％）。

公开(公告)号：US20100003541A1

公开(公告)日：2010-01-07

申请号：US12094997

申请日：2006-12-01

申请人： Yuichi Futamura ,  Michitaka Tsunezawa ,  Masaaki Miura ,  Hiroshi Irie ,  Takatoshi Yoshida ,  Masafumi Shimizu

发明人： Yuichi Futamura ,  Michitaka Tsunezawa ,  Masaaki Miura ,  Hiroshi Irie ,  Takatoshi Yoshida ,  Masafumi Shimizu

IPC分类号： B32B15/18

CPC分类号： C23C2/28 ,  C21D8/02 ,  C21D9/46 ,  C23C2/06 ,  Y10T428/12799 ,  Y10T428/12958 ,  Y10T428/12965 ,  Y10T428/265

摘要： Disclosed is a high-strength hot dip galvannealed steel sheet having high powdering resistance produced by employing such a constitution that a Fe—Zn alloy plated layer is provided on at least one side of a basis steel sheet and a region in which Al (atomic %)/Zn (atomic %)≧0.10 is present in a thickness of 300 Å or more from the surface of the plated layer along the depth direction of the plated layer. Also disclosed is a hot dip galvannealed steel sheet whose formability is greatly improved by optionally specifying chemical composition and structure of the basis steel sheet.

摘要翻译： 本发明公开了一种通过采用这样一种构成，即在基材钢板的至少一面上设置Fe-Zn合金镀层和Al（原子％）的区域制成的耐高耐热性合金化热浸镀锌钢板， ）/ Zn（原子％）> = 0.10从镀层的表面沿着镀层的深度方向以厚度为单位存在。 还公开了通过任选地指定基础钢板的化学组成和结构，可以大大提高其成形性的热浸镀锌合金化热镀锌钢板。

公开(公告)号：US08025982B2

公开(公告)日：2011-09-27

申请号：US12094997

申请日：2006-12-01

申请人： Yuichi Futamura ,  Michitaka Tsunezawa ,  Masaaki Miura ,  Hiroshi Irie ,  Takatoshi Yoshida ,  Masafumi Shimizu

发明人： Yuichi Futamura ,  Michitaka Tsunezawa ,  Masaaki Miura ,  Hiroshi Irie ,  Takatoshi Yoshida ,  Masafumi Shimizu

IPC分类号： B32B15/04 ,  B32B15/18 ,  B32B15/20 ,  B05D1/18 ,  B05D3/02 ,  C21D1/70 ,  C21D11/00

CPC分类号： C23C2/28 ,  C21D8/02 ,  C21D9/46 ,  C23C2/06 ,  Y10T428/12799 ,  Y10T428/12958 ,  Y10T428/12965 ,  Y10T428/265

摘要： Disclosed is a high-strength hot dip galvannealed steel sheet having high powdering resistance produced by employing such a constitution that a Fe—Zn alloy plated layer is provided on at least one side of a basis steel sheet and a region in which Al (atomic %)/Zn (atomic %)≧0.10 is present in a thickness of 300 Å or more from the surface of the plated layer along the depth direction of the plated layer. Also disclosed is a hot dip galvannealed steel sheet whose formability is greatly improved by optionally specifying chemical composition and structure of the basis steel sheet.

摘要翻译： 本发明公开了一种通过采用这样一种构成，即在基材钢板的至少一面上设置Fe-Zn合金镀层和Al（原子％）的区域制成的耐高耐热性合金化热浸镀锌钢板， ）/ Zn（原子％）≥0.10以镀层的深度方向从镀层表面出现厚度为300埃以上。 还公开了通过任选地指定基础钢板的化学组成和结构，可以大大提高其成形性的热浸镀锌合金化热镀锌钢板。

公开(公告)号：US20100247958A1

公开(公告)日：2010-09-30

申请号：US12718397

申请日：2010-03-05

申请人： Michitaka TSUNEZAWA ,  Yuichi Futamura ,  Masaaki Miura

发明人： Michitaka TSUNEZAWA ,  Yuichi Futamura ,  Masaaki Miura

IPC分类号： C25D5/10 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

CPC分类号： C22C38/00 ,  Y10T428/12799 ,  Y10T428/12972

摘要： A high-strength cold-rolled steel sheet according to the present invention: satisfies the requirement of a prescribed chemical composition; has a structure comprising a mother phase structure of ferrite and a second phase structure of retained austenite and martensite (the martensite may not be included); and satisfies the following expressions (1) and (2) when the volume fraction of the ferrite in the whole structure is represented by Vf (%), the volume fraction of the retained austenite in the whole structure is represented by Vγ (%), the carbon content in the retained austenite is represented by Cγ (mass %), the shortest distance between the second phase structures is represented by dis (μm), and the average grain size of the second phase structures is represented by dia (μm), (Vf×Vγ×Cγ×dis)/dia≧300  (1), dis≧1.0 μm  (2). By such a configuration, the improvement of TS-EL balance and the reduction of a springback value are attained in a high strength region of about 550 to 900 MPa class and excellent workability and shape freezing property are obtained.

摘要翻译： 本发明的高强度冷轧钢板满足规定的化学成分要求; 具有铁素体的母相结构和残留奥氏体和马氏体的第二相结构（不包含马氏体）的结构; 满足下述式（1）和（2），将整个结构体的铁素体的体积分数用Vf（％）表示，整体结构中的残留奥氏体的体积分率由Vγ（％）表示， 残留奥氏体中的碳含量由Cγ（质量％）表示，第二相结构之间的最短距离由dis（μm）表示，第二相结构的平均粒径由dia（μm）表示， （Vf×Vγ×Cγ×dis）/dia≥300（1），dis≥1.0μm（2）。 通过这样的结构，可以在约550〜900MPa等级的高强度区域获得TS-EL平衡的改善和回弹值的降低，并获得优异的加工性和形状冻结性。