| 不锈钢激光表面熔凝处理的组织特征 |
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| 引用本文： | 潘清跃,李延民,黄卫东,林鑫,丁国陆,周尧和.不锈钢激光表面熔凝处理的组织特征[J].金属学报,1996,32(7):718-722. |
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| 作者姓名： | 潘清跃 李延民 黄卫东 林鑫 丁国陆 周尧和 |
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| 作者单位： | 西北工业大学凝固技术国家重点实验室，西北工业大学凝固技术国家重点实验室 |
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| 基金项目： | 中国工程物理研究院院外基金,国家自然科学基金 |
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| 摘 要： | 不锈钢经激光表面熔凝处理后，其组织形态发生了显著的变化，在表面熔凝层中分别出现白亮带、细胞晶、胞枝结构以及紊乱枝晶组织，对其形成原因进行了分析．在激光熔池中观察到典型的胞枝转变，对转变的临界条件进行了深入研究，结果表明：实验确定的胞枝转变临界速度与最近提出的ＢＪＴ模型的预言值符合得较好．
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| 关 键 词： | 激光表面熔凝 不锈钢 凝固 组织 |
| 收稿时间： | 1996-07-18 |
| 修稿时间： | 1996-07-18 |
MICROSTRUCTURE FEATURES OF STAINLESS STEEL AFTER LASER SURFACE REMELTING AND SOLIDIFICATION |
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| PAN Qingyue,LI Yanmin,HUANG Weidong,LIN Xin,DING Guolu,ZHOU Yaohe.MICROSTRUCTURE FEATURES OF STAINLESS STEEL AFTER LASER SURFACE REMELTING AND SOLIDIFICATION[J].Acta Metallurgica Sinica,1996,32(7):718-722. |
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| Authors: | PAN Qingyue LI Yanmin HUANG Weidong LIN Xin DING Guolu ZHOU Yaohe |
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| Abstract: | The microstructure features of stainless steel have changed remarkably after laser surface remelting and solidification. Light band, fine cell, cell-dendrite structure and disordered dendrite are found in the surface layer, meanwhile, the causes for their formation have been analyzed. The typical cell-to-dendrite transition is observed at the center of laser melt pool, and a detailed investigation on the transition conditions shows that the critical transition velocity determined by experiment agrees well with the prediction of recent BJT model.Correspondent: PAN Qingyue, Lab.403, Northwestern Polylechnical University, Xi'an 710072 |
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| Keywords: | laser surface remelting and solidification stainless steel cell-to-dendrite transition |
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