Microstructure evolution of Ti2AlNb-based alloy by laser solid forming

Guozheng Jiang, Jing Chen, Xin Lin, Xiaoming Zhao, Weidong Huang

科研成果: 期刊稿件文章同行评审

4 引用 (Scopus)

摘要

Microstructure evolution and hardness distribution of as-deposited Ti2AlNb-based alloy by laser solid forming (LSF) was investigated through SEM, XRD and TEM. The results indicate that the LSFed T2AlNb-based alloy was constituted of B20 phase (ordered-bbc) and O phase (orthorhombic). The as-deposited phase in the bottom and top area of the LSF Ti2AlNb-based alloy sample is B2 phase (Nb-based solid solution), while the phase in the middle area is O phase Widmanstǎttem. The phase evolution through bottom→middle→top is B20 →B20+ O→B20. Therefore, the microhardness of the middle area for LSFed as-deposited Ti2AlNb-based alloy is maximum, and that of the top and bottom is similar. The microhardness of the alloys increases with the laser power increasing.

源语言英语
页(从-至)437-441
页数5
期刊Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
39
3
出版状态已出版 - 3月 2010

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