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논문 기본 정보

자료유형
학술저널
저자정보
Qi Chaoqi (Shanghai Aerospace Equipment Manufacturer Limited Company) Du Yang (Shanghai Aerospace Equipment Manufacturer Limited Company) Yang Ping (Shanghai Aerospace Equipment Manufacturer Limited Company) Liu Zhengwu (Shanghai Aerospace Equipment Manufacturer Limited Company) Lyu Hongya (Shanghai Aerospace Equipment Manufacturer Limited Company) Zhao Kai (Shanghai Aerospace Equipment Manufacturer Limited Company) Guo Lijie (Shanghai Aerospace Equipment Manufacturer Limited Company)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.28 No.12
발행연도
2022.12
수록면
3,068 - 3,079 (12page)
DOI
10.1007/s12540-022-01181-0

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The phase composition, microstructure, tensile properties of TC4 samples produced by laser melting deposition (LMD)and LMD followed by solution-aging treatment were investigated to explore a simpler approach to improve the mechanicalperformances and eliminate negative influences by post treatment. The as-deposited TC4 microstructure showed a combinationof α΄martensite and α-colony with various shapes, such as acicular, rod-like and lamellar. As a synergistic result ofsolution and aging treatment, the dispersion strengthening of secondary-α as well as optimization on length-width ratio ofprimary-α and volume fraction of β-phase cause an increase in the ductility and strength. Meanwhile, there is a differencebetween microstructure of water-quenched specimens and air-cooled specimens, subsequently playing a key role in properties.The solution with air-cooling and aging is comparatively found to significantly reduce the anisotropy and improvecomprehensive performance.

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