Study on the effect of annealing heat treatment on the mechanical properties of selective laser melting of TA17 titanium alloy

WU Jianwen; LU Lili; TAO Tao; HUANG Weidong

doi:10.7512/j.issn.1001-2303.2021.01.18

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Study on the effect of annealing heat treatment on the mechanical properties of selective laser melting of TA17 titanium alloy
Vol. 51, Issue 1, Pages: 111-114(2021)
Published：2021
DOI： 10.7512/j.issn.1001-2303.2021.01.18
稿件说明：

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DOI：

WU Jianwen, LU Lili, TAO Tao, et al. Study on the effect of annealing heat treatment on the mechanical properties of selective laser melting of TA17 titanium alloy[J]. Eletric Welding Machine2021, 51(1): 111-114. DOI： 10.7512/j.issn.1001-2303.2021.01.18.

摘要

针对TA17钛合金激光选区熔化成形(SLM)试验件高强度、低塑性的问题

开展不同温度、冷却方式下的退火热处理工艺研究

通过研究退火热处理前后试件的力学性能测试结果

分析退火热处理工艺对TA17钛合金SLM试件力学性能的影响。结果表明:经过900～950℃真空保温2 h后空冷的退火热处理

SLM试件的强度降低

塑性与韧性得到明显提高

整体力学性能较均衡

满足技术要求。

Abstract

Aiming at the problem of high strength and low plasticity in selective laser melting（SLM） test sample of TA17 titanium alloy

the annealing heat treatment process under with different temperatures and cooling modes was studied

By studying the test results of mechanical properties of the test sample before and after annealing heat treatment

the influence of annealing heat treatment process on the mechanical pro-perties of the SLM test sample of TA17 titanium alloy was analyzed. The results show that by annealing heat treatment of air cooling after vacuum heat preservation at 900～950℃ for 2 hours

the strength of the SLM test sample reduces

the plasticity and the toughness obviously improve

the overall mechanical properties are balanced and meet the technical requirements.