退火热处理对TA17钛合金激光选区熔化成形件的力学性能影响研究

退火热处理对TA17钛合金激光选区熔化成形件的力学性能影响研究 Study on the effect of annealing heat treatment on the mechanical properties of selective laser melting of TA17 titanium alloy 伍建文 WU Jianwen 1 first-author 芦丽莉 LU Lili 1 陶涛 TAO Tao 1 黄卫东 HUANG Weidong 1 中国核动力研究设计院反应堆燃料及材料重点实验室 中国核动力研究设计院反应堆燃料及材料重点实验室 Science and Technology on Reactor Fuel and Materials Laboratory,Nuclear Power Institute of China Science and Technology on Reactor Fuel and Materials Laboratory,Nuclear Power Institute of China 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。 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. TA17钛合金 激光选区熔化成形 退火热处理 力学性能 TA17 titanium alloy selective laser melting annealing heat treatment mechanical properties TG665;TG156.2;TG146.23 2022-03-08 1 51