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61. 发明申请

US20160186282A1 Hot Dip Galvanized and Galvannealed Steel Sheet Having Excellent Elongation Properties, And Method For Manufacturing The Same 有权
标题翻译：具有优异伸长性能的热浸镀锌和热浸镀锌钢板及其制造方法
公开(公告)号：US20160186282A1
公开(公告)日：2016-06-30
申请号：US14757453
申请日：2015-12-23
申请人： POSCO
发明人： Sang Ho HAN , Seong Ho HAN
IPC分类号： C21D9/46 , C22C38/32 , C22C38/22 , C22C38/06 , C22C38/04 , C21D8/02 , C22C38/00 , C21D6/00 , C21D1/26 , C23C2/06 , C23C2/02 , C22C38/38 , C22C38/02
CPC分类号： C21D9/46 , B32B15/012 , B32B15/013 , B32B15/017 , B32B15/04 , B32B15/043 , B32B15/18 , C21D1/26 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0278 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/22 , C22C38/32 , C22C38/38 , C23C2/02 , C23C2/04 , C23C2/06 , C23C2/12 , C23C2/28 , C23C2/285 , C23C2/40 , C23C28/021 , C23C28/023 , C23C30/00 , C23C30/005 , Y10T428/12757 , Y10T428/12792 , Y10T428/12972
摘要： There is provided a hot-dip galvanized steel sheet and a hot-dip galvannealed steel sheet, which have excellent elongation properties, and methods for manufacturing the hot-dip galvanized steel sheet and the hot-dip galvannealed steel sheet. The present disclosure relates to a hot-dip galvanized steel sheet in which a hot-dip galvanized layer is formed on a surface of a base steel sheet, the hot-dip galvanized steel sheet having excellent elongation properties and being characterized by the composition and the microstructure thereof.
摘要翻译：提供了具有优异的伸长性能的热浸镀锌钢板和热浸镀锌钢板，以及制造热浸镀锌钢板和热浸镀锌热镀锌钢板的方法。本发明涉及一种热浸镀锌钢板，其中在基体钢板的表面上形成热浸镀锌层，该热浸镀锌钢板具有优异的伸长性能，其特征在于该组合物和其微结构。

62. 发明申请

US20160177414A1 HIGH-STRENGTH COLD-ROLLED STEEL SHEET AND METHOD OF MANUFACTURING THE SAME 审中-公开
标题翻译：高强度冷轧钢板及其制造方法
公开(公告)号：US20160177414A1
公开(公告)日：2016-06-23
申请号：US14911059
申请日：2014-07-18
申请人： JFE Steel Corporation
发明人： Katsutoshi Takashima , Yoshihiko Ono , Kohei Hasegawa
IPC分类号： C21D9/46 , C22C38/16 , C22C38/14 , C22C38/12 , C22C38/08 , C21D1/84 , C22C38/04 , C22C38/02 , C22C38/00 , C21D8/02 , C21D6/00 , C22C38/38 , C22C38/06
CPC分类号： C21D9/46 , C21D1/25 , C21D1/84 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0278 , C21D8/0473 , C21D2211/001 , C21D2211/002 , C21D2211/008 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/38
摘要： A high-strength cold-rolled steel sheet has a composition and a microstructure. The microstructure comprises: ferrite having an average grain size of 5 um or less and a volume fraction of 3% to 20%, retained austenite having a volume fraction of 5% to 20%, and martensite having a volume fraction of 5% to 20%, the remainder being bainite and/or tempered martensite. The total number of retained austenite with a grain size of 2 μm or less, martensite with a grain size of 2 μm or less, or a mixed phase thereof is 150 or more per 2,000 μm2 of a thickness cross section parallel to the rolling direction of the steel sheet.
摘要翻译：高强度冷轧钢板具有组成和微观结构。微结构包括：体积分数为5〜20％的平均粒径为5μm以下，体积分率为3〜20％的铁素体，体积分数为5〜20的马氏体％，其余为贝氏体和/或回火马氏体。晶粒尺寸为2μm以下的残留奥氏体的总数，粒径为2μm以下的马氏体或其混合相的总数为平均于轧制方向的厚度方向的厚度横截面为每2000平方米的150μm以上钢板。

63. 发明申请

US20160138126A1 HIGH STRENGTH HOT ROLLED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME 审中-公开
标题翻译：高强度热轧钢板及其制造方法
公开(公告)号：US20160138126A1
公开(公告)日：2016-05-19
申请号：US14899958
申请日：2014-06-25
申请人： JFE STEEL CORPORATION
发明人： Noriaki KOSAKA , Satoshi TSUTSUMI , Takayuki MURATA , Motohiko URABE
IPC分类号： C21D9/46 , C21D6/00 , C21D1/60 , C22C38/60 , C22C38/14 , B32B15/01 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C23C2/02 , C23C2/06 , C21D8/02 , C22C38/12
CPC分类号： C21D9/46 , B32B15/013 , C21D1/60 , C21D6/005 , C21D6/008 , C21D8/02 , C21D8/0205 , C21D8/0221 , C21D8/0226 , C21D8/0263 , C21D2211/004 , C21D2211/005 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/60 , C23C2/02 , C23C2/06
摘要： There is provided a high strength hot rolled steel sheet having a composition comprising C: 0.040% to 0.100%, by mass %, Si: 0.50% or less, by mass %, Mn: 1.00% to 2.00%, by mass %, P: 0.03% or less, by mass %, S: 0.006% or less, by mass %, Al: 0.08% or less, by mass %, N: 0.0080% or less, by mass %, Ti: 0.14% to 0.22%, by mass %, and Fe and incidental impurities, and a method for making the same. The high strength hot rolled steel sheet includes a microstructure in which a primary phase is a ferrite phase and fine carbides containing Ti are dispersion-precipitated.
摘要翻译：提供了具有以质量％计含有C：0.040％至0.100％，Si：0.50％或更低，质量％，Mn：1.00％至2.00％质量％的组合物的高强度热轧钢板，P ：0.03质量％以下，S：0.006质量％以下，Al：0.08％以下，质量％：N：0.0080％以下，Ti：0.14〜0.22质量％以质量％计，Fe和偶然杂质及其制造方法。高强度热轧钢板包括初级相为铁素体相的微结构，含有Ti的细小碳化物分散析出。

64. 发明授权

US09340233B2 Method for producing a hot-formed and press-hardened metal component 有权
标题翻译：热成型加压硬化金属成分的制造方法
公开(公告)号：US09340233B2
公开(公告)日：2016-05-17
申请号：US13230138
申请日：2011-09-12
申请人： Markus Pellmann , Johannes Böke
发明人： Markus Pellmann , Johannes Böke
IPC分类号： B62D25/04 , B62D25/08 , C21D1/20 , C21D1/673 , C21D8/02 , C21D8/04 , C22C1/02 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/32 , C21D8/00
CPC分类号： B62D25/04 , B62D25/08 , C21D1/20 , C21D1/673 , C21D8/005 , C21D8/0205 , C21D8/04 , C21D2211/002 , C21D2211/008 , C21D2221/00 , C22C1/02 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/32
摘要： The present invention relates to a method for producing a hot-formed and press-hardened metal component for an automobile having at least two regions of different hardness. A hardenable sheet-metal blank is heated to at least an austenizing temperature and a first region of the sheet-metal blank is intermediately cooled at a cooling speed greater than the lower critical cooling speed of the material of the sheet-metal blank. The sheet-metal blank is then hot-formed and press-hardened in a press-hardening tool by quenching the first region from a bainitic structure transformation stage, thereby adjusting a mixed structure of martensite and bainite in the first region.
摘要翻译：本发明涉及具有至少两个硬度不同的区域的用于汽车的热成形和加压硬化的金属组分的制造方法。将可硬化的金属板坯加热至至少奥氏体化温度，并且以比所述金属板坯材料的临界冷却速度更低的冷却速度中间冷却所述金属板坯的第一区域。然后通过从贝氏体组织转变阶段淬火第一区域，在加压硬化工具中热成形并加压硬化，从而调节第一区域中马氏体和贝氏体的混合结构。

65. 发明申请

US20160130680A1 COLD-ROLLED STEEL SHEET, GALVANIZED COLD-ROLLED STEEL SHEET AND METHOD OF MANUFACTURING THE SAME 有权
标题翻译：冷轧钢板，冷轧冷轧钢板及其制造方法
公开(公告)号：US20160130680A1
公开(公告)日：2016-05-12
申请号：US14891889
申请日：2014-07-01
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Kaoru KAWASAKI , Masaharu KAMEDA , Kohichi SANO , Riki OKAMOTO
IPC分类号： C21D9/46 , C22C38/32 , C22C38/28 , C22C38/26 , C22C38/22 , C22C38/16 , C22C38/14 , C22C38/12 , C22C38/08 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/44 , C22C38/42 , C22C38/10 , C21D6/00 , C21D8/02 , B32B15/01 , C23C2/06
CPC分类号： C21D9/46 , B32B15/013 , C21D6/004 , C21D6/005 , C21D6/007 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0247 , C21D8/0426 , C21D8/0436 , C21D8/0447 , C21D8/0473 , C21D2201/05 , C21D2211/001 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/42 , C22C38/44 , C22C38/54 , C23C2/06 , C23C2/28 , C23C2/40
摘要： A cold-rolled steel sheet includes a predetermined chemical composition, and includes a structure expressed by: an area fraction of ferrite: 95% or more; an area fraction of retained austenite and an area fraction of martensite: 1% to 3% in total; a product of the area fraction of retained austenite and a carbon concentration in retained austenite: 1 or more; a value of I(111)/{I(100)+I(110)} at a region where a depth from a surface is ¼ of a thickness of the cold-rolled steel sheet when intensity of a (hkl) plane is expressed by I(hkl): 2 or less.
摘要翻译：冷轧钢板包括预定的化学组成，并且包括以下结构：铁素体的面积分数为95％以上; 残余奥氏体的面积分数和马氏体的面积率分别为1％〜3％残余奥氏体的面积率和残留奥氏体中的碳浓度的乘积为1以上; （hkl）面的强度表示时，表面深度为冷轧钢板的厚度的1/4的区域的I（111）/ {I（100）+ I（110）}的值由I（hkl）：2以下。

66. 发明申请

US20160122844A1 HT550 STEEL PLATE WITH ULTRAHIGH TOUGHNESS AND EXCELLENT WELDABILITY AND MANUFACTURING METHOD OF THE SAME 审中-公开
标题翻译： HT550具有超强韧性和优异的焊接性能及其制造方法的钢板
公开(公告)号：US20160122844A1
公开(公告)日：2016-05-05
申请号：US14889052
申请日：2014-03-26
申请人： BAOSHAN IRON & STEEL CO., LTD.
发明人： Zicheng Liu , Xianju Li
IPC分类号： C21D9/46 , C22C38/14 , C22C38/12 , C22C38/08 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C33/04 , C21D8/02 , C21D6/00 , C21D1/84 , C21D1/60 , B22D7/00 , C22C38/16
CPC分类号： C21D9/46 , B22D7/00 , C21D1/60 , C21D1/84 , C21D6/001 , C21D6/005 , C21D6/008 , C21D8/02 , C21D8/0205 , C21D8/0226 , C21D8/0247 , C21D8/0263 , C21D2211/002 , C21D2211/005 , C22C33/04 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16
摘要： An HT550 steel plate with ultrahigh toughness and excellent weldability and a manufacturing method thereof are disclosed. Based on a component system with ultralow-C, high-Mn, Nb-microalloying, ultramicro Ti treatment, Mn/C is controlled in the range of 15˜30, (% Si)×(% Ceq) is less than or equal to 0.050, (% C)×(% Si) is less than or equal to 0.010, (% Mo)×[(% C)+0.13(% Si)] is in the range of 0.003˜0.020, the ratio Ti/N is in the range of 2.0˜4.0, the steel plate is alloyed with (Cu+Ni+Mo), Ni/Cu is greater than or equal to 1.0, Ca treatment is performed, and Ca/S is in the range of 0.80˜3.00; by optimizing TMCP process, the steel plate has microstructures of fine ferrite plus self-tempered bainite with an average grain size being less than or equal to 15 μm, yield strength being 460 MPa or more, tensile strength being 550˜700 MPa, yield ratio being 0.85 or less, and −60° C. Charpy impact energy (single value) being 60 J or more; therefore, the steel plate is capable of bearing large thermal input welding while obtaining uniform and excellent strength, toughness, and strong plasticity matching, and is especially suitable for sea bridge structures, ocean wind tower structures, ocean platform structures and hydroelectric structures.
摘要翻译：公开了具有超高韧性和优异的可焊性的HT550钢板及其制造方法。基于具有超低C，高Mn，Nb微合金，超微钛处理的成分体系，Mn / C控制在15〜30的范围内，（％Si）×（％Ceq）小于或等于 0.050，（％C）×（％Si）小于或等于0.010，（％Mo）×[（％C）+ 0.13（％Si）]在0.003〜0.020的范围内，Ti / N 在2.0〜4.0的范围内，钢板与（Cu + Ni + Mo）合金化，Ni / Cu大于或等于1.0，进行Ca处理，Ca / S在0.80〜 3.00; 通过优化TMCP工艺，钢板具有细小铁素体和自回火贝氏体组织，平均粒径小于或等于15μm，屈服强度为460MPa以上，拉伸强度为550〜700MPa，屈服比为0.85以下，-60℃。夏比冲击能（单值）为60J以上; 因此，钢板能够承受大的热输入焊接，同时获得均匀优异的强度，韧性和强韧的可塑性匹配，特别适用于海桥结构，海洋风塔结构，海洋平台结构和水电结构。

67. 发明申请

US20160115562A1 FERRITIC STAINLESS STEEL SHEET, METHOD FOR THE PRODUCTION THEREOF, AND USE OF THE SAME, ESPECIALLY IN EXHAUST LINES 有权
标题翻译：不锈钢不锈钢板，其生产方法及其使用，特别是在排气管线
公开(公告)号：US20160115562A1
公开(公告)日：2016-04-28
申请号：US14425313
申请日：2012-09-03
申请人： Pierre-Olivier SANTACREU , Claudine MIRAVAL , Saghi SAEDLOU
发明人： Pierre-Olivier SANTACREU , Claudine MIRAVAL , Saghi SAEDLOU
IPC分类号： C21D8/02 , C22C38/28 , C22C38/26 , C22C38/24 , C22C38/22 , C22C38/20 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C21D6/00 , C21D9/46 , B22D7/00 , F01N3/20 , C22C38/30
CPC分类号： C21D8/0205 , B22D7/00 , C21D6/002 , C21D6/004 , C21D6/005 , C21D6/007 , C21D6/008 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0273 , C21D9/46 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/30 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , F01N3/2066 , F01N2610/02
摘要： A ferritic stainless steel sheet of a composition, expressed in weight percentages: trace amounts≦C≦0.03%; 0.2%≦Mn≦1%; 0.2%≦Si≦1%; trace amounts≦S≦0.01%; trace amounts≦P≦0.04%; 15%≦Cr≦22%; trace amounts≦Ni≦0.5%; trace amounts≦Mo≦2%; trace amounts≦Cu≦0.5%; 0.160%≦Ti≦1%; 0.02%≦Al≦1%; 0.2%≦Nb≦1%; trace amounts≦V≦0.2%; 0.009%≦N≦0.03%; trace amounts≦Co≦0.2%; trace amounts≦Sn≦0.05%; rare earths (REE)≦0.1%; trace amounts≦Zr≦0.01%; the remainder of the composition consisting of iron and of inevitable impurities resulting from the elaboration; the Al and rare earth (REE) contents satisfying the relationship: Al+30×REE≧0.15%; the Nb, C, N and Ti contents in % satisfy the relationship: 1/[Nb+(7/4)×Ti−7×(C+N)]≦3; said metal sheet having an entirely recrystallized structure and an average ferritic grain size comprised between 25 and 65 μm.A method for manufacturing such a ferritic stainless steel sheet, and its use for manufacturing parts involving shaping and welding and intended to be subject to a periodic temperature of use comprised between 150° C. and 700° C. and to a projection of a mixture of water, urea and ammonia.
摘要翻译：一种组成的铁素体不锈钢板，以重量百分比表示：痕量和nlE; C＆lt; lE; 0.03％; 0.2％＆nlE; Mn＆nlE; 1％; 0.2％＆nlE; Si＆nlE; 1％; 痕量和nlE; S＆nlE; 0.01％; 痕量和nlE; P＆nlE; 0.04％; 15％＆nlE; Cr＆nlE; 22％; 痕量和nlE; Ni＆nlE; 0.5％; 痕量和nlE; Mo＆nlE; 2％; 痕量和nlE; Cu＆nlE; 0.5％; 0.160％＆nlE; Ti＆nlE; 1％; 0.02％＆nlE; Al＆nlE; 1％; 0.2％＆nlE; Nb＆nlE; 1％; 痕量和nlE; V＆nlE; 0.2％; 0.009％＆nlE; N＆nlE; 0.03％; 痕量和nlE; Co＆nlE; 0.2％; 痕量和nlE; Sn＆nlE; 0.05％; 稀土（REE）＆nlE; 0.1％; 痕量和nlE; Zr＆nlE; 0.01％; 由铁制成的组合物的剩余部分和由精细化产生的不可避免的杂质; Al和稀土（REE）含量满足关系：Al + 30×REE≥0.15％; Nb，C，N和Ti的含量满足1 / [Nb +（7/4）×Ti-7×（C + N）]＆nlE; 3; 所述金属板具有完全再结晶的结构，平均铁素体晶粒尺寸在25和65μm之间。一种制造这种铁素体不锈钢板的方法及其用于制造涉及成型和焊接的部件的用途，并且意图经受在150℃和700℃之间的周期性使用温度和混合物的突起的水，尿素和氨。

68. 发明授权

US09303668B2 Thin joint member producing method and pair of thin joint members 有权
标题翻译：薄接头构件制造方法和一对薄接头构件
公开(公告)号：US09303668B2
公开(公告)日：2016-04-05
申请号：US13504241
申请日：2010-10-05
申请人： Masahiro Yoshino
发明人： Masahiro Yoshino
IPC分类号： F16B7/04 , B21D28/32 , C21D8/02
CPC分类号： F16B7/0486 , B21D28/32 , C21D8/0205
摘要： A method is provided for producing a joint member of a metal joint, such that reduction of assembly manhours and reduction of the thickness and weight can be achieved at the same time without reducing the strength of a product or increasing the cost of production. In the case of a nut-side thin joint member, a metal plate of boron steel obtained by adding boron to low-carbon steel is burred such that the resulting cylindrical body obtains a surface that is sufficient for threading, then a threaded portion having a plurality of threads is formed on that surface, after which, quenching is carried out to increase the strength of the threads so that a nut having sufficient strength can be integrally provided even though the thickness and weight of the joint member are reduced.
摘要翻译：提供一种用于制造金属接头的接头构件的方法，从而可以同时实现组装工时的减少和厚度和重量的降低，而不降低产品的强度或增加制造成本。在螺母侧薄接头构件的情况下，通过将硼添加到低碳钢中而获得的硼钢金属板被烧结，使得所得到的圆柱体获得足以穿过的表面，然后将具有在该表面上形成多个螺纹，然后进行淬火以提高螺纹的强度，使得即使减小接合部件的厚度和重量，也可以一体地提供具有足够强度的螺母。

69. 发明申请

US20160086712A1 ELECTRICAL TRANSFORMER ASSEMBLY 审中-公开
标题翻译：电气变压器总成
公开(公告)号：US20160086712A1
公开(公告)日：2016-03-24
申请号：US14961001
申请日：2015-12-07
申请人： HYDRO-QUEBEC
发明人： BRUNO FRANCOEUR , PIERRE COUTURE
IPC分类号： H01F27/06
CPC分类号： C21D8/1272 , C21D8/0205 , C21D8/125 , C21D9/56 , C21D9/573 , C21D2201/03 , C22C38/02 , C22C45/02 , F28D11/02 , F28D21/00 , H01F1/14775 , H01F7/00 , H01F7/0215 , H01F27/00 , H01F27/002 , H01F27/06 , H01F27/25 , H01F27/2876 , H01F27/30 , H01F27/325 , H01F30/16 , H01F41/02 , H01F41/022 , H01F41/0226 , H01F41/071 , H01F41/098 , H05B6/105 , H05B6/145 , Y02P10/253 , Y10T29/49071 , Y10T29/5187
摘要： A support frame for an electrical transformer assembly, comprising two loop-shaped parts, each loop-shaped part having a plurality of limbs, each limb having a peripheral recessed portion in which a primary electrical coil is mountable, and at least one secondary coil is mountable in piggyback on the primary electrical coil, one limb of each loop-shaped part having a straight section. The frame also includes an adjustable attaching means for attaching one of the loop-shaped parts with respect to the other loop-shaped part and adjusting a distance therebetween, so that only the straight sections are adjacent and form a central leg, the central leg being for receiving a magnetic core distinct from the attaching means. The frame provides a means and a method to efficiently secure adjacent windings in a circular core transformer kernel.
摘要翻译：一种用于电变压器组件的支撑框架，包括两个环形部分，每个环形部分具有多个分支，每个分支具有周边凹入部分，初级电线圈可安装在其中，并且至少一个次级线圈是可以安装在主电线圈上的背负上，每个环状部分的一条腿具有直线部分。框架还包括可调节的附接装置，用于相对于另一个环形部分附接一个环形部分并调节它们之间的距离，使得只有直的部分相邻并形成中心腿，中心腿是用于接收与附接装置不同的磁芯。该框架提供了一种有效地保护圆形铁芯变压器内核中相邻绕组的方法和方法。

70. 发明申请

US20160083819A1 HIGH-STRENGTH STEEL SHEET AND METHOD FOR PRODUCING THE SAME 审中-公开
标题翻译：高强度钢板及其制造方法
公开(公告)号：US20160083819A1
公开(公告)日：2016-03-24
申请号：US14779783
申请日：2014-03-26
申请人： JFE STEEL CORPORATION
发明人： Hidetaka Kawabe , Takeshi Yokota , Reiko Sugihara , Kazunori Tahara
IPC分类号： C22C38/06 , C22C38/02 , C22C38/00 , C21D9/46 , C25D3/22 , C25D7/00 , C21D6/00 , C21D8/02 , C22C38/04 , C25D5/36
CPC分类号： C22C38/06 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0247 , C21D8/0263 , C21D8/0278 , C21D9/46 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/22 , C23C2/02 , C23C2/06 , C23C2/40 , C25D3/22 , C25D5/36 , C25D7/00 , C25D7/0614
摘要： There is provided a high-strength steel sheet having a tensile strength (TS) of 900 MPa or more and excellent elongation, stretch flangeability, and bendability in a component system in which an expensive alloy element is not intentionally added. A high-strength steel sheet includes a composition including, on a mass % basis, C: 0.15 to 0.40%, Si: 1.0 to 2.0%, Mn: 1.5 to 2.5%, P: 0.020% or less, S: 0.0040% or less, Al: 0.01 to 0.1%, N: 0.01% or less, and Ca: 0.0020% or less, with the balance including Fe and incidental impurities. The high-strength steel sheet has a microstructure including 40% to 70% of a ferrite phase and a bainite phase in total, 20% to 50% of a martensite phase, and 10% to 30% of a retained austenite phase in terms of an area fraction relative to the entire microstructure.
摘要翻译：提供了在没有有意添加昂贵的合金元素的部件系统中，拉伸强度（TS）为900MPa以上的高强度钢板和伸长率，拉伸凸缘性和弯曲性优异。高强度钢板包括以质量％计含有C：0.15〜0.40％，Si：1.0〜2.0％，Mn：1.5〜2.5％，P：0.020％以下，S：0.0040％或更少，Al：0.01〜0.1％，N：0.01％以下，Ca：0.0020％以下，余量包括Fe和杂质。高强度钢板具有包括40％至70％的铁素体相和贝氏体相，20％至50％的马氏体相和10％至30％的残余奥氏体相的显微组织相对于整个微结构的面积分数。

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