| 时效对冷拔珠光体钢力学性能的影响 |
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| 引用本文： | 闵娜,李伟,金学军,王晓东,杨涛,张驰.时效对冷拔珠光体钢力学性能的影响[J].金属学报,2006,42(10):1009-1013. |
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| 作者姓名： | 闵娜 李伟 金学军 王晓东 杨涛 张驰 |
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| 作者单位： | 1. 上海交通大学材料科学与工程学院,上海,200030
2. 宝山钢铁股份有限公司技术中心,上海,201900 |
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| 摘 要： | 用TEM观察了共析珠光体钢经真应变为2．89的拉拔变形以及不同温度时效后微观组织的变化，测量了时效温度对力学性能的影响．结果表明，大变形珠光体钢在473K时效后获得相对于时效前（σb=2061MPa）更高的抗拉强度（σb=2300MPa），在673K时效获得较均衡的强韧性能（σb=1856MPa，δ=3．7％）．组织观察发现，大变形中溶解的渗碳体在时效过程中弥散析出，分析认为碳化物的析出阻碍位错运动，提高了该钢的力学性能．
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| 关 键 词： | 共析珠光体钢 冷拔 时效 力学性能 |
| 文章编号： | 0412-1961（2006）10-1009-05 |
| 收稿时间： | 2006-02-13 |
| 修稿时间： | 2006-02-132006-05-22 |
The Influence of the Aging on the Mechanical Property of a Drawn Pearlite Steel |
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| MIN Na,LI Wei,JIN Xuejun,WANG Xiaodong,YANG Tao,ZHANG Chi.The Influence of the Aging on the Mechanical Property of a Drawn Pearlite Steel[J].Acta Metallurgica Sinica,2006,42(10):1009-1013. |
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| Authors: | MIN Na LI Wei JIN Xuejun WANG Xiaodong YANG Tao ZHANG Chi |
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| Affiliation: | 1School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200030 ;2Baoshan Iron and Steel Co. Ltd., Shanghai 201900 |
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| Abstract: | The aging of a drawn eutectoid carbon steel with true strain 2.89 at different temperatures has been studied by means of TEM and electrical resistance measurement. The results indicated that the aging at 473K for 1hr improved the tensile strengths from 2245.65MPa of as-drawn to 2448.52MPa. Better mechanical property with combination of strength and ductility was observed after aging at 673K for 1h. Further increase of aging temperatures deteriorated the property possibly due to the recrystalization. The underlying mechanism of the better mechanical properties after aging at low temperature (673K) is considered to associate with the precipitation of fine carbide dissociated in the drawing. |
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| Keywords: | eutectoid pearlite steel cold drawing aging mechanical property |
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