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| Research Progress in TiAl Alloys Prepared by Powder Selective Electron Beam Melting |
| CHE Qianying1 , LI Huixia1 , HE Weiwei 1,2, ZHU Jilei 1,2, CHEN Rui1 , CHENG Kangkang1 , JIN Yuanyuan1 , WANG Yu1 |
| (1. Xi’an College Sailong Metal Materials Co., Ltd., Xi’an 710018, China; 2. State Key Laboratory for Porous Metals Materials, Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China) |
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Abstract Powder selective electron beam melting is an ideal additive manufacturing technology for the fabrication of brittle TiAl alloy complex components. In this paper, the research progress in TiAl alloys prepared by selective electron beam melting are reviewed from the aspects of raw material powder, densification, chemical composition, microstructure, solidification and phase change, post-processing, mechanical performance, forming accuracy and surface roughness. The problems existing in the research and the corresponding measures are remarked, and the future development strategies are prospected.
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2021, 
