| M2钢冷变形时微裂纹形核原位观察与机理 |
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| 引用本文： | 张奎,高永生.M2钢冷变形时微裂纹形核原位观察与机理[J].钢铁研究学报,1996,8(3):29-32. |
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| 作者姓名： | 张奎 高永生 |
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| 作者单位： | 北京有色金属研究总院，北京科技大学，北京有色金属研究总院复合材料中心 |
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| 摘 要： | 采用带拉伸机构的扫描电镜和透射电镜等实验手段研究了热轧退火状态Ｍ２高速工具钢在单向拉伸变形时微裂纹形核机制及位错塞积状态。连续观察到了单向拉伸变形时钢中碳化物粒子的开裂全过程。证实了位错塞积的存在及其对微裂纹形核的促进作用。
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| 关 键 词： | M2钢 冷拔 微裂纹 工具钢 形核 原位观察 |
In-Situ Observation and Mechanism of the Nucleation of Microcracks in M2 Steel during Cold Forming |
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| Zhang Kui,He Ping,Zhang Shaoming,Shi Likai,Gao Yongsheng,La Yuqiu.In-Situ Observation and Mechanism of the Nucleation of Microcracks in M2 Steel during Cold Forming[J].Journal of Iron and Steel Research,1996,8(3):29-32. |
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| Authors: | Zhang Kui He Ping Zhang Shaoming Shi Likai Gao Yongsheng La Yuqiu |
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| Affiliation: | Zhang Kui;He Ping;Zhang Shaoming;Shi Likai;Gao Yongsheng;La Yuqiu |
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| Abstract: | SEM and TEM equiped with a tensile tester were used to investigate the nucleation of microcracks and dislocation pile up of the hot rolled M2 steel experiencing uniaxial extension and cold drawing deformation.Splitting of carbide particles in thesteel were observed continuously. This verifies the existence of dislocation pile-up and its stimulation to the nucleation of microcracks. |
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| Keywords: | M2 steel cold forming microcrack |
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