| 后续热处理对激光熔铸层残余应力的影响 |
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| 引用本文： | 刘其斌,于杰,罗筑,徐涛,刘一春,陈江. 后续热处理对激光熔铸层残余应力的影响[J]. 贵州工业大学学报(自然科学版), 1996, 0(4) |
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| 作者姓名： | 刘其斌 于杰 罗筑 徐涛 刘一春 陈江 |
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| 作者单位： | 贵州工学院材料中心，中国科学院腐蚀所 |
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| 摘 要： | 本文在镍基合金ＤＺ４上激光熔铸钴基合金层，研究了后续热处理温度对熔铸层残余应力、显微硬度和金相组织的影响。结果表明，在低温退火处理时，可部分地消除熔铸层中的残余应力，而熔铸层组织和显微硬度并无明显变化；在高温退火处理时，熔铸层大部分应力得以消除，但熔铸层显微硬度下降，同时，熔铸层枝晶组织开始碎化。
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| 关 键 词： | 激光熔铸层，退火，残余应力 |
EFFECTS OF THE FOLLOWING HEAT TREATMENT ON THE RESIDUAL STRESS IN LASER MELT-CASTING COATING |
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| Liu Qibin, Yu Jie,Luo Zhu, Xu Tao,Liu Yichun. EFFECTS OF THE FOLLOWING HEAT TREATMENT ON THE RESIDUAL STRESS IN LASER MELT-CASTING COATING[J]. Journal of Guizhou University of Technology(Natural Science Edition), 1996, 0(4) |
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| Authors: | Liu Qibin Yu Jie Luo Zhu Xu Tao Liu Yichun |
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| Abstract: | The effect of the annealing temperature on residual stress, microhardness and microstructure of Co-based coating fabricated by laser melt-casting on the substrate of cast Nibased superalloy DZ4 has been studied. The experinemtal results show that the residual stress in melt-casting coating is partly cancelled, but the structure and microhardness in caoting have no obvious change when annealing temperature is low ; under high annealing temperature, the residual stress in coating is cancelled, but the microhardness in coating is decreased, and the dendrite grains structure in coating is broken. |
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| Keywords: | laser melt-casting coating annealing residual stress. |
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