| 2200 MPa级超高强度低合金钢的组织和力学性能 |
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| 引用本文： | 范长刚,董瀚,时捷,刘燕林,雍岐龙,惠卫军,王毛球,翁宇庆.2200 MPa级超高强度低合金钢的组织和力学性能[J].兵器材料科学与工程,2006,29(2):31-35. |
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| 作者姓名： | 范长刚 董瀚 时捷 刘燕林 雍岐龙 惠卫军 王毛球 翁宇庆 |
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| 作者单位： | 钢铁研究总院,结构材料研究所,北京,100081;先进钢铁材料技术国家工程研究中心,北京,100081;中国兵器科学研究院,宁波分院,宁波,315103;先进钢铁材料技术国家工程研究中心,北京,100081;先进钢铁材料技术国家工程研究中心,北京,100081;中国金属学会,北京,100711 |
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| 摘 要： | 研究了两种不同硅含量超高强度低合金钢在不同热处理下的力学性能,分析了硅对2200MPa级超高强度钢力学性能的影响。结果表明,试验钢经淬火及低温回火后得到板条马氏体、ε碳化物和少量残余奥氏体组织。碳的质量分数为0.5%能使钢的强度达到2200MPa。添加1.75%质量分数的硅使钢的强度提高约100MPa,其抗回火稳定性高,在270℃回火下其抗拉强度仍在2200MPa以上。
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| 关 键 词： | 低合金 超高强度钢 力学性能 组织 |
| 文章编号： | 1004-244X(2006)02-0031-04 |
| 修稿时间： | 2005年9月13日 |
Microstructure and mechanical properties of 2 200 MPa grade ultra-high strength low alloy steels |
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| FAN Chang-gang,DONG Han,SHI Jie,LIU Yan-lin,YONG Qi-long,HUI Wei-jun,WANG Mao-qiu,WENG Yu-qing.Microstructure and mechanical properties of 2 200 MPa grade ultra-high strength low alloy steels[J].Ordnance Material Science and Engineering,2006,29(2):31-35. |
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| Authors: | FAN Chang-gang DONG Han SHI Jie LIU Yan-lin YONG Qi-long HUI Wei-jun WANG Mao-qiu WENG Yu-qing |
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| Abstract: | Mechanical properties of two kinds of ultra-high strength low alloy clean steels with different silicon content under different heat treatment condition have been investigated.Effects of silicon content on mechanical properties of 2 200 MPa grade steels have been analyzed.It has been pointed out that the mixed microstructure comprising lath martensite,ε carbide and a little amount of retained austenite is obtained after quenched and tempered at low temperature.0.5% carbon addition can increase the tensile strength of steels to 2 200 MPa,1.75% silicon addition results in an increase of about 100 MPa in tensile strength,it can improve the stability of tempering and maintain 2 200 MPa at the tempering temperature of 270 ℃. |
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| Keywords: | low alloy steels ultra-high strength mechanical property microstructure |
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