| 夹杂物的类型与形态对超高强度钢塑性的影响 |
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| 引用本文： | 夏志新,杨卓越,苏杰,丁雅莉.夹杂物的类型与形态对超高强度钢塑性的影响[J].航空材料学报,2008,28(5). |
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| 作者姓名： | 夏志新 杨卓越 苏杰 丁雅莉 |
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| 作者单位： | 钢铁研究总院,结构材料研究所,北京,100081 |
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| 摘 要： | 利用扫描电镜和能谱分析等检测手段研究了不同冶炼工艺生产的G50钢中夹杂物类型和尺寸分布.研究结果表明:抗拉强度和屈服强度主要受微观组织影响,与夹杂物的类型和形态无关.NbCN与基体间结合力相对硫化物与基体间的结合力大.在塑性断裂过程中,裂纹在夹杂物形成的空穴处扩展存在竞争机制,优先出现在与基体结合力差且形态应力集中的夹杂物处,其次是与基体结合力强同时有应力集中的形态的夹杂物.
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| 关 键 词： | 超高强度钢 夹杂物 塑性 |
Effect of Type and Morphology of Inclusions on Plastic Properties of Ultrahigh Strength Steel |
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| XIA Zhi-xin,YANG Zhuo-yue,SU Jie,DING Ya-ling.Effect of Type and Morphology of Inclusions on Plastic Properties of Ultrahigh Strength Steel[J].Journal of Aeronautical Materials,2008,28(5). |
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| Authors: | XIA Zhi-xin YANG Zhuo-yue SU Jie DING Ya-ling |
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| Institution: | XIA Zhi-xin,YANG Zhuo-yue,SU Jie,DING Ya-ling(Institute for Structure Materials,Central Iron , steel Research Institute,Beijing 100081,China) |
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| Abstract: | The type and size distribution of inclusion on G50 steel smelted by different metallurgy processes have been analyzed by SEM,EDAX.Results have indicated that tensile and yield strength are mainly affected by microstructure regardless of type and morphology of inclusions.Cohesion between NbCN and matrix is much bigger than that of between MnS and matrix.During plastic fracture,crack propagation is manipulated by the mechanism of competition in the inclusion of different type and morphology.It firstly appears... |
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| Keywords: | ultra-high Strength Steel inclusion plastic properties |
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