| 激光选区熔化成形Cu-Al-Mn-La形状记忆合金 |
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| 引用本文： | 党明珠,朱文志,田健,魏青松,史玉升.激光选区熔化成形Cu-Al-Mn-La形状记忆合金[J].电加工与模具,2020(1):52-54. |
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| 作者姓名： | 党明珠 朱文志 田健 魏青松 史玉升 |
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| 作者单位： | 华中科技大学材料成形与模具技术国家重点实验室 |
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| 基金项目： | 国家重点研发计划资助项目(2018YFB1105301) |
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| 摘 要： | 采用激光选区熔化技术成形Cu-Al-Mn-La合金,成形过程中合金粉末逐层叠加并经历快速熔化凝固的过程,使得合金的组织与铸造中不同,性能得到了改善。通过对微观组织分析,试样在熔敷道中心至边界依次分布着细晶区、过渡区和等轴晶区,同时存在马氏体结构;物相分析可知试样中含有β1母相和马氏体相,纳米压痕分析显示试样的纳米硬度为(4.33±0.17)GPa,杨氏模量为(122±8)GPa。
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| 关 键 词： | 激光选区熔化 形状记忆合金 纳米压痕 |
Cu-Al-Mn-La Shape Memory Alloy Processed by Selective Laser Melting |
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| DANG Mingzhu,ZHU Wenzhi,TIAN Jian,WEI Qingsong,SHI Yusheng.Cu-Al-Mn-La Shape Memory Alloy Processed by Selective Laser Melting[J].Electromachining & Mould,2020(1):52-54. |
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| Authors: | DANG Mingzhu ZHU Wenzhi TIAN Jian WEI Qingsong SHI Yusheng |
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| Affiliation: | (State Key Laboratory of Material Processing and Die&Mould Technology,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | The Cu-Al-Mn-La shape memory alloy was formed by selective laser melting(SLM)layer by layer,and the powder experienced rapid melting and solidification process,which made different microstructures and mechanical properties from that in casting.According to the microstructure analysis,the fine-grained zone,transition zone and equiaxed crystal zone are distributed from the center of the road to the boundary,and the martensite structure exists at the same time.The phase analysis shows that the sample contains both β1 parent phase and the martensite phase,and the nano-indentation result shows the sample has a nanohardness of(4.33±0.17)GPa and a Young′s modulus of(122±8)GPa. |
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| Keywords: | SLM shape memory alloy nano-indentation |
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