| 免热处理高强度低屈强比铆螺钢的研究 |
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| 引用本文： | 吴迪,李壮,赵宪明. 免热处理高强度低屈强比铆螺钢的研究[J]. 钢铁, 2006, 41(1): 62-65 |
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| 作者姓名： | 吴迪 李壮 赵宪明 |
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| 作者单位： | 轧制技术及连轧自动化国家重点实验室(东北大学),辽宁,沈阳,110004;轧制技术及连轧自动化国家重点实验室(东北大学),辽宁,沈阳,110004;沈阳航空工业学院材料系,辽宁,沈阳,110034 |
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| 摘 要： | 铆螺钢经棒材轧机控轧控冷轧成棒材,获得具有铁素体、珠光体和粒状贝氏体的混合组织,冷镦成螺栓后进行产品检验.结果表明:控轧控冷后的棒材不经过退火直接冷镦成螺栓,冷镦性能非常好.螺栓不经过最终热处理,同样可获得很高的力学性能.力学性能的提高主要是由于螺栓在拉伸变形时残余奥氏体的应变诱导马氏体相变.
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| 关 键 词： | 铆螺钢 控轧控冷 残余奥氏体 应变诱导相变 |
| 文章编号： | 0449-749X（2006）01-0062-04 |
| 修稿时间： | 2005-03-01 |
Study of High Strength and Low Yield Ratio Cold Heading Steel not Requiring Heat Treatment |
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| WU Di,LI Zhuang,ZHAO Xian-ming. Study of High Strength and Low Yield Ratio Cold Heading Steel not Requiring Heat Treatment[J]. Iron & Steel, 2006, 41(1): 62-65 |
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| Authors: | WU Di LI Zhuang ZHAO Xian-ming |
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| Affiliation: | 1. State Key Lab of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China; 2. Dept. of Mater. Eng., Shenyang Institute of Aeronautical Engineering, Shenyang 110034, Liaoning, China |
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| Abstract: | The cold head steel bar which is composed of ferrite, pearlite and granular bainite was produced by controlled rolling and cooling. The bolts made from such bar were inspected. The results show that the bolts can be directly fabricated from bars by cold heading. The mechanical properties of the bolts without heat treatment are very high due to strain-induced martensite transformation. |
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| Keywords: | cold heading steel controlled rolling and cooling retained austenite strain-induced transformation |
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