Microstructure Evolution of Intermetallics Produced by Laser Powder Deposition
来源期刊：材料热处理学报2004年第5期
论文作者：ZHONG Min-lin HAN Jian-min LIU Wen-jin XU Xiang-yang
关键词：Laser synthesis; Intermetallic alloy; Heat treatment;
摘 要：Heat treatment on the laser powder synthesized Ni20Al30Fe intermetallic alloy was conducted. The microstructure and composition were analyzed by scanning electron microscopy. The results showed that heat treatment could promote the precipitation of the ductile γ phase and the coalescence and growth of the sub-crystal grains. These were desirable to improve the ambient ductility and the elevated-temperature strength of the Ni20Al30Feintermetallic alloy.
ZHONG Min-lin1，HAN Jian-min2，LIU Wen-jin1，XU Xiang-yang2
(1.Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China;
2.Institute of Materials Science and Engineering, Beijing Jiaotong University, Beijing 100044, China)
摘要:Heat treatment on the laser powder synthesized Ni20Al30Fe intermetallic alloy was conducted. The microstructure and composition were analyzed by scanning electron microscopy. The results showed that heat treatment could promote the precipitation of the ductile γ phase and the coalescence and growth of the sub-crystal grains. These were desirable to improve the ambient ductility and the elevated-temperature strength of the Ni20Al30Feintermetallic alloy.
关键词:Laser synthesis; Intermetallic alloy; Heat treatment;
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