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Effect of annealing heat treatment on microstructure and corrosion behavior of Ti6Al4V alloy fabricated by multi-laser beam wire-feed additive manufacturing in vacuum environment

Ding, Xueping1,2; Ma, Honglin2; Zhang, Qi2; Yang, Jie2; Li, Daoyuan2; Fan, Shuqian2
2022-09-05
摘要Ti6Al4V alloy thin wall was successfully fabricated by multi-laser beam wire-feed additive manufacturing in vacuum environment. The effect of annealing heat treatment (AHT) on microstructure and corrosion behavior of specimens in 3.5 wt% NaCl and 1 mol/L H(2)SO4 electrolytes was investigated. Results showed that AHT led to the reduction of the non-equilibrium phase alpha' and texture weakening. AHT700 was beneficial to achieve crystal refinement while AHT850 had obvious coarsening phenomenon. In addition, AHT could improve the corrosion behavior of the specimens due to the reduction of alpha' phase and relief of residual stress. Compared with the specimen of AHT850, the specimen of AHT700 with finer crystal size and obvious texture weakening improved the corrosion resistance more obviously. (C)& nbsp;2022 Elsevier B.V. All rights reserved.
关键词Additive manufacturing Annealing heat treatment Ti6Al4V alloy Microstructure Corrosion behavior Vacuum
DOI10.1016/j.jallcom.2022.165363
发表期刊JOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
卷号914页码:11
通讯作者Fan, Shuqian(fansq@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:000802566500002
语种英语