公开(公告)号：US5123970A

公开(公告)日：1992-06-23

申请号：US519048

申请日：1990-05-04

申请人： Hongsheng Fang ,  Yankang Zheng ,  Xiuyun Chen ,  Donghao Chen ,  Rufa Zhao

发明人： Hongsheng Fang ,  Yankang Zheng ,  Xiuyun Chen ,  Donghao Chen ,  Rufa Zhao

IPC分类号： C22C38/38

CPC分类号： C22C38/38

摘要： Air-hardenable steels of duplex bainite/martensite microstructure consisting essentially of 0.10 to 0.7% C, 0.1 to 2% Si, 2.1 to 3.5% Mn, 0.0005 to 0.005% B, up to 3.5% Cr and preferably containing Cr in amount of at least 0.1%, balance Fe except for incidental impurities. Optional elements are up to 1.5% W, 1.0% Mo, 0.15% V, 0.2% S, 0.1% Ca, 0.1% Pb, 0.1% Ti and 0.2% total rare earths. At least 1.0% Cr is especially preferred and if below such amount, total Mn and Si is at least 3% and in such case, if C is under 0.47%, at least 0.6% Si is present. The steels are hardenable to R.sub.c 2o to R.sub.c 58 and have a hardenable diameter in the range between 35 mm and 80 to 100 mm by air-cooling only, together with good strength, toughness and fatigue- and wear-resistance.

摘要翻译： 双相贝氏体/马氏体组织的空气硬化钢基本上由C：0.10〜0.7％，Si：0.1〜2％，Mn：2.1〜3.5％，B：0.005〜0.005％，Cr：3.5％以下，优选含有Cr量 至少0.1％，平衡Fe，除了杂质。 可选元素可达1.5％W，1.0％Mo，0.15％V，0.2％S，0.1％Ca，0.1％Pb，0.1％Ti和0.2％总稀土。 至少1.0％的Cr是特别优选的，如果低于该量，则总Mn和Si至少为3％，在这种情况下，如果C在0.47％以下，则存在至少0.6％的Si。 钢可以硬化到Rc 2o到Rc 58，并且通过仅通过空气冷却，并且具有良好的强度，韧性和耐疲劳性和耐磨性，其可固化直径在35mm至80-100mm的范围内。

公开(公告)号：US4957702A

公开(公告)日：1990-09-18

申请号：US283491

申请日：1988-12-12

申请人： Hongsheng Fang ,  Yankang Zheng ,  Xiuyun Chen ,  Donghao Chen ,  Rufa Zhao

发明人： Hongsheng Fang ,  Yankang Zheng ,  Xiuyun Chen ,  Donghao Chen ,  Rufa Zhao

IPC分类号： C22C38/38

CPC分类号： C22C38/38

摘要： Air-hardenable steels of duplex bainite/martensite microstructure consisting essentially of 0.10 to 0.7% C, 0.1 to 2% Si, 2.1 to 3.5% Mn, 0.0005 to 0.005% B, up to 3.5% Cr and preferably containing Cr in amount of at least 0.1%, balance Fe except for incidental impurities. Optional elements are up to 1.5% W, 1.0% Mo, 0.15% V, 0.2% S, 0.1% Ca, 0.1% Pb, 0.1% Ti and 0.2% total rare earths. At least 1.0% Cr is especially preferred and if below such amount, total Mn and Si is at least 3% and in such case, if C is under 0.47%, at least 0.6% Si is present. The steels are hardenable to R.sub.c 20 to R.sub.c 58 and have a hardenable diameter in the range between 35 mm and 80 to 100 mm by air-cooling only, together with good strength, toughness and fatigue- and wear-resistance.

摘要翻译： 双相贝氏体/马氏体组织的空气硬化钢基本上由C：0.10〜0.7％，Si：0.1〜2％，Mn：2.1〜3.5％，B：0.005〜0.005％，Cr：3.5％以下，优选含有Cr量 至少0.1％，平衡Fe，除了杂质。 可选元素可达1.5％W，1.0％Mo，0.15％V，0.2％S，0.1％Ca，0.1％Pb，0.1％Ti和0.2％总稀土。 至少1.0％的Cr是特别优选的，如果低于该量，则总Mn和Si至少为3％，在这种情况下，如果C在0.47％以下，则存在至少0.6％的Si。 该钢可以硬化到Rc 20至Rc 58，并且通过仅通过空气冷却具有在35mm和80至100mm之间的范围内的可硬化直径，以及良好的强度，韧性和疲劳和耐磨性。

公开(公告)号：US4812182A

公开(公告)日：1989-03-14

申请号：US83130

申请日：1987-07-31

申请人： Hongsheng Fang ,  Rufa Zhao ,  Yankang Zheng ,  Ziuyun Chen ,  Guangchu He ,  Jiaoyou Gu ,  Mingang Zhu ,  Zhixin Zhang ,  Keging Tong

发明人： Hongsheng Fang ,  Rufa Zhao ,  Yankang Zheng ,  Ziuyun Chen ,  Guangchu He ,  Jiaoyou Gu ,  Mingang Zhu ,  Zhixin Zhang ,  Keging Tong

IPC分类号： C22C38/04 ,  C22C38/14

CPC分类号： C22C38/04

摘要： Steel articles have a granular bainite microstructure on continuous air cooling, from hot working temperature, of a low cost, tough, high strength, low alloy (HSLA) steel having a composition which, in broadest scope, scope, consists essentially, by weight percent, of 0.08 to 0.25% carbon, 0.30 to 1.5% silicon, 2.0 to 3.2% manganese and 0.005 to 0.005% boron. The steel composition preferably contains, in one aspect of the invention: 0.08 to 0.18% carbon, 0.3 to 1.2% silicon, 2.1% to 2.5% manganese and 0.005 to 0.004% boron; and in another aspect: 0.08 to 0.18% carbon 0.7 to 1.2% silicon, 2.7 to 3.1% manganese, and 0.0005 to 0.004% boron. The steel optionally may contain, by weight percent: up to 0.10 calcium and up to.0.20%, preferably less than 0.01%, sulfur, or up to 0.10% lead; up to 0.10%, especially 0.04 to 0.10%, vanadium, and up to 1.5% chromium. The steel is substantially free of molybdenum, tungsten and other alloying elements, except for residual amounts.

摘要翻译： 钢制品在连续空气冷却中具有颗粒状贝氏体组织，从热加工温度，低成本，坚韧，高强度，低合金（HSLA）钢组成，其组成在最广泛的范围内基本上由重量百分比组成 ，0.08〜0.25％的碳，0.30〜1.5％的硅，2.0〜3.2％的锰和0.005〜0.005％的硼。 钢组合物优选在本发明的一个方面包含：0.08至0.18％的碳，0.3至1.2％的硅，2.1％至2.5％的锰和0.005至0.004％的硼; 另一方面：碳为0.08〜0.18％，0.7〜1.2％的硅，2.7〜3.1％的锰和0.0005〜0.004％的硼。 钢任选地可以包含以重量百分比计：高达0.10钙和至多0.20％，优选小于0.01％的硫，或至多0.10％的铅; 高达0.10％，特别是0.04至0.10％的钒，和至多1.5％的铬。 除了剩余量外，钢基本上不含钼，钨和其他合金元素。