公开(公告)号：US20110139315A1

公开(公告)日：2011-06-16

申请号：US12864586

申请日：2009-01-19

申请人： Tatsuya Nakagaito ,  Saiji Matsuoka ,  Shinjiro Kaneko ,  Yoshiyasu Kawasaki ,  Yoshitsugu Suzuki

发明人： Tatsuya Nakagaito ,  Saiji Matsuoka ,  Shinjiro Kaneko ,  Yoshiyasu Kawasaki ,  Yoshitsugu Suzuki

IPC分类号： C23C2/02 ,  C22C38/00 ,  C22C38/18 ,  C22C38/16 ,  C22C38/08

CPC分类号： C21D8/0263 ,  C21D1/25 ,  C21D8/0436 ,  C21D8/0447 ,  C21D9/48 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/38 ,  C23C2/02 ,  Y10T428/12799

摘要： A high-strength galvanized steel sheet has a TS of at least 590 MPa and excellent ductility and stretch flangeability and a method for manufacturing the high-strength galvanized steel sheet. The galvanized steel sheet contains, on the basis of mass percent, C: 0.05% to 0.3%, Si: 0.01% to 2.5%, Mn: 0.5% to 3.5%, P: 0.003% to 0.100% or less, S: 0.02% or less, and Al: 0.010% to 1.5%. The total of Si and Al is 0.5% to 2.5%. The remainder are iron and incidental impurities, contain 20% or more of ferrite phase, 10% or less of martensite phase, and 10% to 60% of tempered martensite, on the basis of area percent, and 3% to 10% of retained austenite phase on the basis of volume fraction. The retained austenite has an average grain size of 2.0 μm or less.

摘要翻译： 高强度镀锌钢板的TS为至少590MPa，延展性和拉伸凸缘性优异，高强度镀锌钢板的制造方法。 镀锌钢板以质量％计含有C：0.05〜0.3％，Si：0.01〜2.5％，Mn：0.5〜3.5％，P：0.003〜0.100％以下，S：0.02 ％以下，Al：0.010〜1.5％。 Si和Al的总和为0.5％至2.5％。 其余为铁和偶然杂质，以面积百分比为基准，含有20％以上的铁素体相，10％以下的马氏体相，10％〜60％的回火马氏体，3％〜10％的保留 基于体积分数的奥氏体相。 残留奥氏体的平均粒径为2.0μm以下。

公开(公告)号：US06899771B2

公开(公告)日：2005-05-31

申请号：US10341165

申请日：2003-01-13

申请人： Chikara Kami ,  Akio Tosaka ,  Kazunori Osawa ,  Shinjiro Kaneko ,  Takuya Yamazaki ,  Kaneharu Okuda ,  Takashi Ishikawa

发明人： Chikara Kami ,  Akio Tosaka ,  Kazunori Osawa ,  Shinjiro Kaneko ,  Takuya Yamazaki ,  Kaneharu Okuda ,  Takashi Ishikawa

IPC分类号： C21D8/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22 ,  C22C38/38

CPC分类号： C21D8/0236 ,  C21D8/0226 ,  C21D8/0268 ,  C21D8/0273 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22 ,  C22C38/38

摘要： The present invention presents a high tensile strength cold rolled steel sheet having excellent formability, impact resistance and strain age hardening characteristics, and the production thereof. As a specific means, a slab having a composition which contains, by mass %, 0.15% or less of C, 0.02% or less of Al, and 0.0050 to 0.0250% of N at N/Al of 0.3 or higher, and has N in a solid solution state at 0.0010% or more, is first hot rolled at the finish rolling delivery-side temperature of 800° C. or above, and is subsequently coiled at the coiling temperature of 750° C. or below to prepare a hot rolled plate. Then, after cold rolling, the hot rolled plate is continuously cooled at a temperature from the recrystallization temperature to 900° C. at a holding time of 10 to 120 seconds, and is cooled by primary cooling in which the hot rolled plate is cooled to 500° C. or below at a cooling rate of 10 to 300° C./s, and furthermore if necessary, by secondary cooling in which a residence time is 300 seconds or less in a temperature range of the primary cooling stopping temperature or below and 350° C. or higher. Provided is a steel sheet containing a ferritic phase having an average crystal grain size of 10 μm or less at an area ratio of 50% or more, and if necessary, a martensitic phase at an area ratio of 3% or more as a second phase.

公开(公告)号：US08657969B2

公开(公告)日：2014-02-25

申请号：US12866481

申请日：2009-02-05

申请人： Yoshiyasu Kawasaki ,  Tatsuya Nakagaito ,  Shinjiro Kaneko ,  Saiji Matsuoka

发明人： Yoshiyasu Kawasaki ,  Tatsuya Nakagaito ,  Shinjiro Kaneko ,  Saiji Matsuoka

IPC分类号： C22C38/00

CPC分类号： C23C28/023 ,  C21D8/0205 ,  C21D8/0405 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/002 ,  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 ,  C22C38/38 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  Y10T428/12799

摘要： A high strength galvanized steel sheet has a TS of 590 MPa or more and excellent processability. The component composition contains, by mass %, C: 0.05% to 0.3%, Si: 0.7% to 2.7%, Mn: 0.5% to 2.8%, P: 0.1% or lower, S: 0.01% or lower, Al: 0.1% or lower, and N: 0.008% or lower, and the balance: Fe or inevitable impurities. The microstructure contains, in terms of area ratio, ferrite phases: 30% to 90%, bainite phases: 3% to 30%, and martensite phases: 5% to 40%, in which, among the martensite phases, martensite phases having an aspect ratio of 3 or more are present in a proportion of 30% or more.

摘要翻译： 高强度镀锌钢板的TS为590MPa以上，加工性优异。 组分组成以质量％计含有C：0.05％至0.3％，Si：0.7％至2.7％，Mn：0.5％至2.8％，P：0.1％或更低，S：0.01％或更低，Al：0.1 ％以下，N：0.008％以下，余量为Fe或不可避免的杂质。 微观结构以面积比计含有铁素体相：30％〜90％，贝氏体相：3％〜30％，马氏体相：5％〜40％，其中，在马氏体相中，马氏体相具有 3以上的纵横比以30％以上的比例存在。

公开(公告)号：US20130133792A1

公开(公告)日：2013-05-30

申请号：US13816561

申请日：2010-08-12

申请人： Tatsuya Nakagaito ,  Saiji Matsuoka ,  Shinjiro Kaneko ,  Yoshiyasu Kawasaki

发明人： Tatsuya Nakagaito ,  Saiji Matsuoka ,  Shinjiro Kaneko ,  Yoshiyasu Kawasaki

IPC分类号： C21D8/02 ,  C22C38/34 ,  C22C38/16 ,  C22C38/14 ,  C22C38/00 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/60 ,  C22C38/12

CPC分类号： C21D8/0205 ,  C21D1/25 ,  C21D9/02 ,  C21D9/46 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/34 ,  C22C38/60

摘要： A high-strength cold rolled steel sheet has excellent formability and crashworthiness and includes, on a mass % basis, C: 0.05 to 0.3%, Si: 0.3 to 2.5%. Mn: 0.5 to 3.5%, P: 0.003 to 0.100%, 5: 0.02% or less, Al: 0.010 to 0.5%, the balance being iron and unavoidable impurities, the high-strength cold rolled steel sheet having a microstructure including 20% or more of ferrite on an area fraction basis, 10 to 60% of tempered martensite on an area fraction basis, 0 to 10% of martensite on an area fraction basis, and 3 to 15% of retained austenite on a volume fraction basis.

摘要翻译： 高强度冷轧钢板具有优异的成形性和耐冲击性，以质量％计含有C：0.05〜0.3％，Si：0.3〜2.5％。 Mn：0.5〜3.5％，P：0.003〜0.100％，5：0.02％以下，Al：0.010〜0.5％，余量为铁和不可避免的杂质，高强度冷轧钢板具有20％ 以上的面积分数的铁素体，以面积分数为基准的回火马氏体10〜60％，以面积分数为基准的0〜10％的马氏体，以体积分数计的3〜15％的残留奥氏体。

公开(公告)号：US08076008B2

公开(公告)日：2011-12-13

申请号：US12594018

申请日：2008-03-27

申请人： Shinjiro Kaneko ,  Hiroshi Matsuda ,  Yoshiyasu Kawasaki ,  Tatsuya Nakagaito ,  Yoshitsugu Suzuki ,  Yusuke Fushiwaki ,  Takashi Kawano ,  Saiji Matsuoka

发明人： Shinjiro Kaneko ,  Hiroshi Matsuda ,  Yoshiyasu Kawasaki ,  Tatsuya Nakagaito ,  Yoshitsugu Suzuki ,  Yusuke Fushiwaki ,  Takashi Kawano ,  Saiji Matsuoka

IPC分类号： B32B15/01 ,  B32B15/04 ,  B32B15/18 ,  B32B15/20

CPC分类号： C23C2/06 ,  B32B15/013 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/28 ,  Y10T428/12799 ,  Y10T428/12951 ,  Y10T428/12972

摘要： A high-strength galvanized steel sheet is provided which has a tensile strength of a level of about 590 MPa and superior formability, including a coating with good appearance. The galvanized steel sheet includes a base steel and a galvanized coating layer formed over the surface of the base steel. The galvanized steel sheet has a chemical composition containing 0.005% to 0.12% of C, 0.7% to 2.7% of Si, 0.5% to 2.8% of Mn, 0.1% or less of P, 0.07% or less of S, 1.0% or less of Al, 0.008% or less of N, and the balance being Fe and inevitable impurities on a mass basis, and a microstructure constituted of at least 90% of ferrite and 2% to 10% of martensite on an area basis. The ferrite has a Vickers hardness of 120 or more on average, and an inclusion is precipitated from the grain boundary with a length of 50% or less relative to the entire length of the grain boundary in the surface layer of the base steel with a depth of 3 μm from the interface between the coating layer and the base steel.

摘要翻译： 提供了具有约590MPa的拉伸强度和优异的成形性的高强度镀锌钢板，包括具有良好外观的涂层。 镀锌钢板包括基体钢和形成在基体钢表面上的镀锌层。 镀锌钢板具有C：0.005〜0.12％，Si：0.7〜2.7％，Mn：0.5〜2.8％，P：0.1％以下，S：0.07％以下，1.0％以下 少量的Al，0.008％以下的N，余量为Fe和不可避免的杂质，基于面积的至少90％的铁素体和2〜10％的马氏体构成。 铁素体的维氏硬度平均为120以上，相对于基体钢的表层的晶界的全长为50％以下，从晶界析出的夹杂物的深度为深度 距涂层和基体钢之间的界面为3微米。

公开(公告)号：US20100319819A1

公开(公告)日：2010-12-23

申请号：US12866382

申请日：2009-02-04

申请人： Shinjiro Kaneko ,  Kaneharu Okuda ,  Tetsuo Shimizu ,  Noriaki Moriyasu ,  Masahide Watabe

发明人： Shinjiro Kaneko ,  Kaneharu Okuda ,  Tetsuo Shimizu ,  Noriaki Moriyasu ,  Masahide Watabe

IPC分类号： C21D8/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14

CPC分类号： C22C38/04 ,  C21D8/0226 ,  C21D8/0263 ,  C21D9/46 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/06 ,  C22C38/14

摘要： A high-strength hot-rolled steel sheet has a tensile strength (TS) of 540 to 780 MPa, only small variations in strength, and excellent uniformity in strength using a general-purpose Ti-containing steel sheet, which is inexpensive. The high-strength hot-rolled steel sheet includes, on a mass percent basis, 0.05%-0.12% C, 0.5% or less Si, 0.8%-1.8% Mn, 0.030% or less P, 0.01% or less S, 0.005%-0.1% Al, 0.01% or less N, 0.030%-0.080% Ti, and the balance being Fe and incidental impurities. The microstructure have a volume fraction of polygonal ferrite of 70% or more, and the amount of Ti present in a precipitate having a size of less than 20 nm is 50% or more of the value of Ti* calculated using formula (1): Ti*=[Ti]−48/14×[N] (1) where [Ti] and [N] represent a Ti content (percent by mass) and a N content (percent by mass), respectively, of the steel sheet.

摘要翻译： 高强度热轧钢板的拉伸强度（TS）为540〜780MPa，强度变化小，使用廉价的通用含Ti钢板的强度均匀性优异。 高强度热轧钢板以质量％计含有0.05％-0.12％C，0.5％以下Si，0.8％-1.8％Mn，0.030％以下P，0.01％以下S，0.005 ％-0.1％Al，0.01％以下N，0.030％-0.080％Ti，余量为Fe和附带杂质。 微结构具有70％以上的多边形铁素体的体积分率，并且存在于尺寸小于20nm的析出物中的Ti的量为使用式（1）计算的Ti *值的50％以上： Ti * = [Ti] -48 / 14×[N]（1）其中[Ti]和[N]分别表示钢板的Ti含量（质量％）和N含量（质量％） 。

公开(公告)号：US20100218857A1

公开(公告)日：2010-09-02

申请号：US12682801

申请日：2008-10-23

申请人： Tatsuya Nakagaito ,  Shusaku Takagi ,  Saiji Matsuoka ,  Shinjiro Kaneko

发明人： Tatsuya Nakagaito ,  Shusaku Takagi ,  Saiji Matsuoka ,  Shinjiro Kaneko

IPC分类号： C21D8/02 ,  B32B15/18 ,  B32B15/01 ,  C23C2/28

CPC分类号： C21D8/0263 ,  B32B15/013 ,  C21D1/26 ,  C21D8/04 ,  C21D8/0405 ,  C21D8/0426 ,  C21D8/0436 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C21D2211/009 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C23C2/06 ,  C23C30/00 ,  Y10T428/12799

摘要： A high tensile strength galvanized steel sheet with excellent formability and anti-crush properties contains, in terms of % by mass, 0.05 to 0.3% of C, 0.01 to 2.5% of Si, 0.5 to 3.5% of Mn, 0.003 to 0.100% of P, 0.02% or less of S, 0.010 to 1.5% of Al, 0.007% or less of N, in addition, 0.01 to 0.2% in total of at least one element selected from Ti, Nb, and V, the remainder being Fe and unavoidable impurities, the steel sheet having a microstructure composed of, in terms of area fraction, 20 to 87% of ferrite, 3 to 10% in total of martensite and residual austenite, and 10 to 60% of tempered martensite, and a second phase composed of the martensite, residual austenite, and tempered martensite having an average crystal grain diameter of 3 μm or less.

摘要翻译： 具有优异的成形性和抗粉碎性的高抗拉强度的镀锌钢板，按质量计含有C：0.05〜0.3％，Si：0.01〜2.5％，Mn：0.5〜3.5％，Mn：0.003〜0.100％ P的0.02％以下，Al：0.010〜1.5％，N：0.007％以下，另外，选自Ti，Nb，V中的至少一种以上的元素为0.01〜0.2％，余量为Fe 和不可避免的杂质，具有以面积分数表示的铁素体的20〜87％，马氏体和残余奥氏体的总计为3〜10％，回火马氏体为10〜60％的微结构的钢板， 平均结晶粒径为3μm以下的马氏体，残留奥氏体和回火马氏体组成的相。

公开(公告)号：US20110240176A1

公开(公告)日：2011-10-06

申请号：US13131758

申请日：2009-11-27

申请人： Shinjiro Kaneko ,  Yoshiyasu Kawasaki ,  Tatsuya Nakagaito ,  Saiji Matsuoka

发明人： Shinjiro Kaneko ,  Yoshiyasu Kawasaki ,  Tatsuya Nakagaito ,  Saiji Matsuoka

IPC分类号： C21D8/02 ,  C22C38/18 ,  C22C38/00 ,  C22C38/22 ,  C21D11/00 ,  B32B15/01

CPC分类号： C23C2/06 ,  C21D1/25 ,  C21D1/26 ,  C21D8/0463 ,  C21D8/0473 ,  C21D9/48 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/38 ,  C23C2/02 ,  C23C2/28

摘要： A high-strength cold-rolled steel sheet and high-strength galvanized steel sheet has a TS of 1180 MPa or more and excellent formability including stretch flangeability and bendability. The high-strength cold-rolled steel sheet contains 0.05% to 0.3% C, 0.5% to 2.5% Si, 1.5% to 3.5% Mn, 0.001% to 0.05% P, 0.0001% to 0.01% S, 0.001% to 0.1% Al, 0.0005% to 0.01% N, and 1.5% or less Cr (including 0%) on a mass basis, the remainder being Fe and unavoidable impurities.

摘要翻译： 高强度冷轧钢板和高强度镀锌钢板的TS为1180MPa以上，成型性优异，包括拉伸凸缘性和弯曲性。 高强度冷轧钢板含有0.05〜0.3％的Si，0.5〜2.5％的Si，1.5〜3.5％的Mn，0.001〜0.05％的P，0.0001〜0.01％的S，0.001〜0.1％ Al，0.0005％〜0.01％N，1.5％以下Cr（含0％），余量为Fe和不可避免的杂质。

公开(公告)号：US06702904B2

公开(公告)日：2004-03-09

申请号：US09980513

申请日：2001-10-24

申请人： Chikara Kami ,  Akio Tosaka ,  Kazunori Osawa ,  Shinjiro Kaneko ,  Takuya Yamazaki ,  Kaneharu Okuda ,  Takashi Ishikawa

发明人： Chikara Kami ,  Akio Tosaka ,  Kazunori Osawa ,  Shinjiro Kaneko ,  Takuya Yamazaki ,  Kaneharu Okuda ,  Takashi Ishikawa

IPC分类号： C22C3804

CPC分类号： C21D8/0236 ,  C21D8/0226 ,  C21D8/0268 ,  C21D8/0273 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/22 ,  C22C38/38

摘要： The present invention presents a high tensile strength cold rolled steel sheet having excellent formability, impact resistance and strain age hardening characteristics, and the production thereof. As a specific means, a slab having a composition which contains, by mass %, 0.15% or less of C, 0.02% or less of Al, and 0.0050 to 0.0250% of N at N/Al of 0.3 or higher, and has N in a solid solution state at 0.0010% or more, is first hot rolled at the finish rolling delivery-side temperature of 800° C. or above, and is subsequently coiled at the coiling temperature of 750° C. or below to prepare a hot rolled plate. Then, after cold rolling, the hot rolled plate is continuously cooled at a temperature from the recrystallization temperature to 900° C. at a holding time of 10 to 120 seconds, and is cooled by primary cooling in which the hot rolled plate is cooled to 500° C. or below at a cooling rate of 10 to 300° C./s, and furthermore if necessary, by secondary cooling in which a residence time is 300 seconds or less in a temperature range of the primary cooling stopping temperature or below and 350° C. or higher. Provided is a steel sheet containing a ferritic phase having an average crystal grain size of 10 &mgr;m or less at an area ratio of 50% or more, and if necessary, a martensitic phase at an area ratio of 3% or more as a second phase.

摘要翻译： 本发明提供一种成型性，耐冲击性和应变时效硬化特性优异的高拉伸强度的冷轧钢板及其制造方法。 作为具体的方法，具有以质量％计含有0.15％以下C，0.02％以下Al，N / Al为0.0050〜0.0250％N，0.3以上N组成的板坯， 在0.0010％以上的固溶状态下，首先在800℃以上的精轧条件下进行热轧，然后在卷取温度为750℃以下的条件下卷取，制成热 轧板。 然后，冷轧后，在10〜120秒的保持时间内，从再结晶温度至900℃的温度下连续冷却热轧板，通过一次冷却冷却，将热轧板冷却至 500℃以下，冷却速度为10〜300℃/秒，另外如果需要，通过在一次冷却停止温度以下的温度范围内停留时间为300秒以下的二次冷却 和350℃以上。 本发明提供一种钢板，其含有平均结晶粒径为10μm以下的面积比为50％以上的铁素体相，根据需要，作为第二相的面积比为3％以上的马氏体相 。

公开(公告)号：US09677163B2

公开(公告)日：2017-06-13

申请号：US14124090

申请日：2012-06-06

申请人： Yoichi Makimizu ,  Yoshitsugu Suzuki ,  Hideki Nagano ,  Shinjiro Kaneko

发明人： Yoichi Makimizu ,  Yoshitsugu Suzuki ,  Hideki Nagano ,  Shinjiro Kaneko

IPC分类号： C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C21D8/04 ,  C22C38/02 ,  C22C38/04 ,  C22C38/34 ,  C22C38/38 ,  C21D9/48

CPC分类号： C23C2/02 ,  C21D8/0473 ,  C21D8/0478 ,  C21D9/48 ,  C22C38/02 ,  C22C38/04 ,  C22C38/34 ,  C22C38/38 ,  C23C2/06 ,  C23C2/28 ,  Y10T428/12799

摘要： A high strength galvanized steel sheet excellent in coating adhesiveness is made from a base material that is a high strength steel sheet containing Si, Mn, and Cr. A method includes performing an oxidation treatment on steel containing Si, Mn, and Cr in an oxidation furnace under the condition that a selected exit temperature T, reduction annealing and a galvanizing treatment, or optionally, further an alloying treatment under conditions that heating is performed at a temperature of 460° C. or higher and 600° C. or lower for an alloying treatment time of 10 seconds or more and 60 seconds or less.