公开(公告)号：US09139885B2

公开(公告)日：2015-09-22

申请号：US13822746

申请日：2011-09-16

申请人： Hiroyuki Kawata ,  Naoki Maruyama ,  Akinobu Murasato ,  Naoki Yoshinaga ,  Chisato Wakabayashi ,  Noriyuki Suzuki

发明人： Hiroyuki Kawata ,  Naoki Maruyama ,  Akinobu Murasato ,  Naoki Yoshinaga ,  Chisato Wakabayashi ,  Noriyuki Suzuki

IPC分类号： C21D8/02 ,  C22C38/40 ,  C25D5/10 ,  B32B15/00 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/38 ,  C23C2/06 ,  C23C2/40 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/34 ,  C22C38/58 ,  C23C2/02 ,  C23C2/28 ,  C25D3/22 ,  C25D5/36 ,  C25D5/50 ,  C25D3/56

CPC分类号： C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0273 ,  C21D9/46 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/34 ,  C22C38/38 ,  C22C38/40 ,  C22C38/58 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C25D3/22 ,  C25D3/565 ,  C25D5/36 ,  C25D5/50

摘要： This high-strength steel sheet includes by mass percentage: 0.05 to 0.4% of C; 0.1 to 2.5% of Si; 1.0 to 3.5% of Mn; 0.001 to 0.03% of P; 0.0001 to 0.01% of S; 0.001 to 2.5% of Al; 0.0001 to 0.01% of N; 0.0001 to 0.008% of O; and a remainder composed of iron and inevitable impurities, wherein a steel sheet structure contains by volume fraction 10 to 50% of a ferrite phase, 10 to 50% of a tempered martensite phase, and a remaining hard phase, wherein a 98% hardness is 1.5 or more times as high as a 2% hardness in a range from ⅛ to ⅜ of a thickness of the steel sheet, wherein a kurtosis K* of the hardness distribution between the 2% hardness and the 98% hardness is −1.2 to −0.4, and wherein an average crystal grain size in the steel sheet structure is 10 μm or less.

摘要翻译： 该高强度钢板以质量百分比计：C：0.05〜0.4％ 0.1〜2.5％的Si; 1.0〜3.5％的Mn; 0.001〜0.03％P; 0.0001〜0.01％的S; 0.001〜2.5％的Al; 0.0001〜0.01％N; 0.0001〜0.008％的O; 余量由铁和不可避免的杂质组成，其中钢板结构体积体积分数为铁素体相10-50％，回火马氏体相为10-50％，剩余硬质相为98％ 在钢板厚度的⅛至⅛范围内的2％硬度的1.5倍以上，2％硬度与98％硬度之间的硬度分布的峰度K *为-1.2〜 0.4，其中，钢板结构体的平均结晶粒径为10μm以下。

公开(公告)号：US20130167980A1

公开(公告)日：2013-07-04

申请号：US13822746

申请日：2011-09-16

申请人： Hiroyuki Kawata ,  Naoki Maruyama ,  Akinobu Murasato ,  Naoki Yoshinaga ,  Chisato Wakabayashi ,  Noriyuki Suzuki

发明人： Hiroyuki Kawata ,  Naoki Maruyama ,  Akinobu Murasato ,  Naoki Yoshinaga ,  Chisato Wakabayashi ,  Noriyuki Suzuki

IPC分类号： C21D8/02 ,  C22C38/40 ,  C22C38/38 ,  C22C38/34 ,  C22C38/16 ,  C22C38/00 ,  C22C38/12 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/58 ,  C22C38/14

CPC分类号： C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0273 ,  C21D9/46 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/34 ,  C22C38/38 ,  C22C38/40 ,  C22C38/58 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C25D3/22 ,  C25D3/565 ,  C25D5/36 ,  C25D5/50

摘要： This high-strength steel sheet includes by mass percentage: 0.05 to 0.4% of C; 0.1 to 2.5% of Si; 1.0 to 3.5% of Mn; 0.001 to 0.03% of P; 0.0001 to 0.01% of S; 0.001 to 2.5% of Al; 0.0001 to 0.01% of N; 0.0001 to 0.008% of O; and a remainder composed of iron and inevitable impurities, wherein a steel sheet structure contains by volume fraction 10 to 50% of a ferrite phase, 10 to 50% of a tempered martensite phase, and a remaining hard phase, wherein a 98% hardness is 1.5 or more times as high as a 2% hardness in a range from ⅛ to ⅜ of a thickness of the steel sheet, wherein a kurtosis K* of the hardness distribution between the 2% hardness and the 98% hardness is −1.2 to −0.4, and wherein an average crystal grain size in the steel sheet structure is 10 μm or less.

摘要翻译： 该高强度钢板以质量百分比计：C：0.05〜0.4％ 0.1〜2.5％的Si; 1.0〜3.5％的Mn; 0.001〜0.03％P; 0.0001〜0.01％的S; 0.001〜2.5％的Al; 0.0001〜0.01％N; 0.0001〜0.008％的O; 余量由铁和不可避免的杂质组成，其中钢板结构体积体积分数为铁素体相10-50％，回火马氏体相为10-50％，剩余硬质相为98％ 在钢板厚度的1/8至3/8的范围内的2％硬度的1.5倍或更多倍，其中2％硬度和98％硬度之间的硬度分布的峰度K *为 -1.2〜-0.4，钢板结构体的平均结晶粒径为10μm以下。

公开(公告)号：US10023947B2

公开(公告)日：2018-07-17

申请号：US13508779

申请日：2010-11-30

申请人： Masafumi Azuma ,  Noriyuki Suzuki ,  Naoki Maruyama ,  Akinobu Murasato ,  Yasuharu Sakuma ,  Hiroyuki Kawata ,  Chisato Wakabayashi

发明人： Masafumi Azuma ,  Noriyuki Suzuki ,  Naoki Maruyama ,  Akinobu Murasato ,  Yasuharu Sakuma ,  Hiroyuki Kawata ,  Chisato Wakabayashi

IPC分类号： C21D8/00 ,  C22C38/04 ,  C22C38/02 ,  C23C2/06 ,  C21D9/46 ,  C22C38/00 ,  C22C38/06 ,  C23C2/28 ,  C25D5/36 ,  C23C2/40

摘要： High strength steel plate with an ultimate tensile strength of 900 MPa or more which is excellent in hydrogen embrittlement resistance characterized in that, in the structure of the steel plate, (a) by volume fraction, ferrite is present in 10 to 50%, bainitic ferrite and/or bainite in 10 to 60%, and tempered martensite in 10 to 50%, and (b) iron-based carbides which contain Si or Si and Al in 0.1% or more are present in 4×108 (particles/mm3) or more.

公开(公告)号：US20120222781A1

公开(公告)日：2012-09-06

申请号：US13508779

申请日：2010-11-30

申请人： Masafumi Azuma ,  Noriyuki Suzuki ,  Naoki Maruyama ,  Akinobu Murasato ,  Yasuharu Sakuma ,  Hiroyuki Kawata ,  Chisato Wakabayashi

发明人： Masafumi Azuma ,  Noriyuki Suzuki ,  Naoki Maruyama ,  Akinobu Murasato ,  Yasuharu Sakuma ,  Hiroyuki Kawata ,  Chisato Wakabayashi

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

CPC分类号： C23C2/06 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/004 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/28 ,  C23C2/40 ,  C25D5/36

摘要： High strength steel plate with an ultimate tensile strength of 900 MPa or more which is excellent in hydrogen embrittlement resistance characterized in that, in the structure of the steel plate, (a) by volume fraction, ferrite is present in 10 to 50%, bainitic ferrite and/or bainite in 10 to 60%, and tempered martensite in 10 to 50%, and (b) iron-based carbides which contain Si or Si and Al in 0.1% or more are present in 4×108 (particles/mm3) or more.

摘要翻译： 具有900MPa以上的极限拉伸强度的高强度钢板，其耐氢脆性优异，其特征在于，在钢板的结构中，（a）以体积分数计，铁素体的含量为10〜50％，贝氏体 铁素体和/或贝氏体为10〜60％，回火马氏体为10〜50％，（b）含有Si或Si和Al为0.1％以上的铁基碳化物存在于4×10 8（粒子/ mm 3 ） 或者更多。

公开(公告)号：US10351937B2

公开(公告)日：2019-07-16

申请号：US14235414

申请日：2012-07-27

申请人： Hiroyuki Kawata ,  Naoki Maruyama ,  Akinobu Murasato ,  Akinobu Minami ,  Hajime Hasegawa ,  Chisato Wakabayashi ,  Tsuyoshi Oki

发明人： Hiroyuki Kawata ,  Naoki Maruyama ,  Akinobu Murasato ,  Akinobu Minami ,  Hajime Hasegawa ,  Chisato Wakabayashi ,  Tsuyoshi Oki

IPC分类号： C22C38/38 ,  C22C38/34 ,  C22C38/28 ,  C22C38/22 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C25D5/48 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C21D8/02 ,  C25D5/36 ,  C22C18/00 ,  C22C18/04 ,  B32B15/01 ,  C25D7/06

摘要： The present invention provides a high-strength steel sheet excellent in impact resistance. The high-strength steel sheet contains predetermined contents of C, Si, Mn, P, S, Al, Ti, N, and O, with the balance being iron and inevitable impurities, and has a steel sheet structure in which, in a ⅛ thickness to ⅜ thickness region across ¼ of a sheet thickness, 1 to 8% retained austenite is contained in volume fraction, an average aspect ratio of the retained austenite is 2.0 or less, an amount of solid-solution Mn in the retained austenite is 1.1 times an average amount of Mn or more, and TiN grains having a 0.5 μm average grain diameter or less are contained, and a density of AlN grains with a 1 μm grain diameter or more is 1.0 pieces/mm2 or less, wherein a maximum tensile strength is 900 MPa or more.

公开(公告)号：US20140205855A1

公开(公告)日：2014-07-24

申请号：US14235414

申请日：2012-07-27

申请人： Hiroyuki Kawata ,  Naoki Maruyama ,  Akinobu Murasato ,  Akinobu Minami ,  Hajime Hasegawa ,  Chisato Wakabayashi ,  Tsuyoshi Oki

发明人： Hiroyuki Kawata ,  Naoki Maruyama ,  Akinobu Murasato ,  Akinobu Minami ,  Hajime Hasegawa ,  Chisato Wakabayashi ,  Tsuyoshi Oki

IPC分类号： C22C38/38 ,  C22C38/34 ,  C22C38/28 ,  C22C38/22 ,  C22C38/16 ,  B32B15/01 ,  C22C38/12 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C22C38/14

CPC分类号： C22C38/38 ,  B32B15/013 ,  C21D8/0247 ,  C22C18/00 ,  C22C18/04 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/22 ,  C22C38/28 ,  C22C38/34 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C25D5/36 ,  C25D5/48 ,  C25D7/0614 ,  Y10T428/12611 ,  Y10T428/12799

摘要： [Summary] The present invention provides a high-strength steel sheet excellent in impact resistance. The high-strength steel sheet contains predetermined contents of C, Si, Mn, P, S, Al, Ti, N, and O, with the balance being iron and inevitable impurities, and has a steel sheet structure in which, in a ⅛ thickness to ⅜ thickness region across ¼ of a sheet thickness, 1 to 8% retained austenite is contained in volume fraction, an average aspect ratio of the retained austenite is 2.0 or less, an amount of solid-solution Mn in the retained austenite is 1.1 times an average amount of Mn or more, and TiN grains having a 0.5 μm average grain diameter or less are contained, and a density of AlN grains with a 1 μm grain diameter or more is 1.0 pieces/mm2 or less, wherein a maximum tensile strength is 900 MPa or more.

摘要翻译： 发明内容本发明提供耐冲击性优异的高强度钢板。 高强度钢板含有预定含量的C，Si，Mn，P，S，Al，Ti，N和O，余量为铁和不可避免的杂质，并且具有钢板结构，其中在 厚度为⅜厚度区域，1/4的残留奥氏体含量为1〜8％，残留奥氏体的平均纵横比为2.0以下，残留奥氏体中的固溶Mn量为1.1 的平均粒径Mn以上，并且含有0.5μm平均粒径以下的TiN粒子，1μm以上的AlN粒子的密度为1.0个/ mm 2以下，其中，最大拉伸强度 强度为900MPa以上。

公开(公告)号：US08460481B2

公开(公告)日：2013-06-11

申请号：US12736417

申请日：2009-04-09

申请人： Masafumi Azuma ,  Noriyuki Suzuki ,  Naoki Maruyama ,  Naoki Yoshinaga ,  Akinobu Murasato

发明人： Masafumi Azuma ,  Noriyuki Suzuki ,  Naoki Maruyama ,  Naoki Yoshinaga ,  Akinobu Murasato

IPC分类号： C22C38/02 ,  C22C38/04 ,  C21D8/04 ,  C23C2/06

CPC分类号： C23C2/28 ,  C21D8/0236 ,  C21D8/0273 ,  C21D9/46 ,  C21D9/48 ,  C21D2201/05 ,  C21D2211/004 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C23C2/02 ,  C23C2/06

摘要： The invention is directed to providing, for application in automobiles, construction materials, household appliances and the like, high-strength sheets excellent in formability properties such as hole expansibility and ductility, and also in fatigue resistance, characterized in comprising, in specified contents expressed in mass %, C, Si, Mn, P, S, Al, N and O and a balance of iron and unavoidable impurities, and having a steel sheet structure composed mainly of ferrite and hard structures, a crystal orientation difference between some ferrite adjacent to hard structures and the hard structures of less than 9°, and a maximum tensile strength of 540 MPa or greater.

摘要翻译： 本发明旨在提供在汽车，建筑材料，家用电器等中的应用，具有优异的成型性能如扩孔性和延展性以及耐疲劳性的高强度片材，其特征在于，在特定内容中表达 以质量％计，C，Si，Mn，P，S，Al，N和O以及铁和不可避免的杂质的平衡，并且具有主要由铁素体和硬质结构组成的钢板结构，一些铁素体相邻的晶体取向差异 硬结构和硬结构小于9°，最大拉伸强度为540MPa或更大。

公开(公告)号：US08070889B2

公开(公告)日：2011-12-06

申请号：US12736417

申请日：2009-04-09

申请人： Masafumi Azuma ,  Noriyuki Suzuki ,  Naoki Maruyama ,  Naoki Yoshinaga ,  Akinobu Murasato

发明人： Masafumi Azuma ,  Noriyuki Suzuki ,  Naoki Maruyama ,  Naoki Yoshinaga ,  Akinobu Murasato

IPC分类号： C22C38/02 ,  C22C38/04 ,  C21D8/04 ,  C23C2/06

摘要： The invention is directed to providing, for application in automobiles, construction materials, household appliances and the like, high-strength sheets excellent in formability properties such as hole expansibility and ductility, and also in fatigue resistance, characterized in comprising, in specified contents expressed in mass %, C, Si, Mn, P, S, Al, N and O and a balance of iron and unavoidable impurities, and having a steel sheet structure composed mainly of ferrite and hard structures, a crystal orientation difference between some ferrite adjacent to hard structures and the hard structures of less than 9°, and a maximum tensile strength of 540 MPa or greater.

公开(公告)号：US20110024004A1

公开(公告)日：2011-02-03

申请号：US12736417

申请日：2009-04-09

申请人： Masafumi Azuma ,  Noriyuki Suzuki ,  Naoki Maruyama ,  Naoki Yoshinaga ,  Akinobu Murasato

发明人： Masafumi Azuma ,  Noriyuki Suzuki ,  Naoki Maruyama ,  Naoki Yoshinaga ,  Akinobu Murasato

IPC分类号： C21D8/02 ,  C22C38/00 ,  C22C38/18 ,  C22C38/16 ,  C22C38/08

CPC分类号： C23C2/28 ,  C21D8/0236 ,  C21D8/0273 ,  C21D9/46 ,  C21D9/48 ,  C21D2201/05 ,  C21D2211/004 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C23C2/02 ,  C23C2/06

摘要： The invention is directed to providing, for application in automobiles, construction materials, household appliances and the like, high-strength sheets excellent in formability properties such as hole expansibility and ductility, and also in fatigue resistance, characterized in comprising, in specified contents expressed in mass %, C, Si, Mn, P, S, Al, N and O and a balance of iron and unavoidable impurities, and having a steel sheet structure composed mainly of ferrite and hard structures, a crystal orientation difference between some ferrite adjacent to hard structures and the hard structures of less than 9°, and a maximum tensile strength of 540 MPa or greater.

摘要翻译： 本发明旨在提供在汽车，建筑材料，家用电器等中的应用，具有优异的成型性能如扩孔性和延展性以及耐疲劳性的高强度片材，其特征在于，在特定内容中表达 以质量％计，C，Si，Mn，P，S，Al，N和O以及铁和不可避免的杂质的平衡，并且具有主要由铁素体和硬质结构组成的钢板结构，一些铁素体相邻的晶体取向差异 硬结构和硬结构小于9°，最大拉伸强度为540MPa或更大。

公开(公告)号：US20140170440A1

公开(公告)日：2014-06-19

申请号：US14235681

申请日：2012-07-27

申请人： Hiroyuki Kawata ,  Naoki Maruyama ,  Akinobu Murasato ,  Akinobu Minami ,  Masafumi Azuma ,  Takuya Kuwayama ,  Shigeru Yonemura

发明人： Hiroyuki Kawata ,  Naoki Maruyama ,  Akinobu Murasato ,  Akinobu Minami ,  Masafumi Azuma ,  Takuya Kuwayama ,  Shigeru Yonemura

IPC分类号： B32B15/01 ,  C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/44 ,  C22C38/42 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/34 ,  C22C38/00 ,  C21D8/02

CPC分类号： B32B15/013 ,  C21D1/19 ,  C21D8/0205 ,  C21D8/0247 ,  C21D8/0263 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/004 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/34 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C25D5/36 ,  Y10T428/12799

摘要： High strength steel sheet which secures tensile maximum strength 900 MPa or more high strength while having excellent shapeability, which high strength steel sheet which is excellent in shapeability characterized by having a predetermined composition of ingredients, by the steel sheet structure including a ferrite phase and martensite phase, by the ratio of Cu particles incoherent with the bcc iron being 15% or more with respect to the Cu particles as a whole, by a density of Cu particles in the ferrite phase being 1.0×1018/m3 or more, and by an average particle size of Cu particles in the ferrite phase being 2.0 nm or more.

摘要翻译： 通过具有铁素体相和马氏体的钢板结构，能够确保拉伸最大强度900MPa以上，同时具有优异的成形性的高强度钢板，其特征在于具有规定的成分组成的成形性优异的高强度钢板 相中，相对于Cu颗粒整体来说，与bcc铁不相干的Cu粒子的比例为15％以上，铁素体相中的Cu粒子的密度为1.0×1018 / m3以上， 铁素体相中的Cu粒子的平均粒径为2.0nm以上。