电焊机2024，Vol.54Issue(10)：1-9,9.DOI:10.7512/j.issn.1001-2303.2024.10.01
激光-电弧复合增材制造Ti-6Al-4V合金热处理组织及力学性能研究
Research on the Heat Treatment Microstructure and Mechanical Properties of Ti-6Al-4V Alloy Fabricated by Laser Arc Composite Additive Manufacturing
潘艳飞 1王琳 1许健 1李仲树1
作者信息
- 1. 江苏长江智能制造研究院有限责任公司,江苏 常州 213012
- 折叠
摘要
Abstract
This article investigated the effects of different heat treatment regimes on the microstructure and mechanical prop-erties of Ti-6Al-4V alloy fabricated by laser arc composite additive manufacturing.The changes in microstructure under dif-ferent heat treatment parameters were analyzed using optical microscopy and scanning electron microscopy,and the reasons for the changes in mechanical properties of the samples under different solid solution temperatures and cooling rates were explored.The results showed that the microstructure of Ti-6Al-4V alloy fabricated by laser arc composite additive was mainly composed of Widmanstein Flat noodles structure and a small amount of acicular α phase in columnar β grain extend-ing outward from the substrate along the deposition direction.After solution aging heat treatment,the microstructure was mainly a typical interlaced basket structure,the thickness of Flat noodles was significantly reduced,and the plasticity and toughness of the sample were significantly improved.When the solution aging heat treatment scheme was 950℃/1 h,AC+540℃/6 h,AC,compared with the deposited sample,the grain size was reduced by 2 times and better comprehensive me-chanical properties could be obtained.It was recommended to adopt this heat treatment scheme.关键词
复合增材制造/Ti-6Al-4V合金/热处理/微观组织/力学性能Key words
composite additive manufacturing/Ti-6Al-4V alloy/heat treatment/microstructure/mechanical property分类
矿业与冶金引用本文复制引用
潘艳飞,王琳,许健,李仲树..激光-电弧复合增材制造Ti-6Al-4V合金热处理组织及力学性能研究[J].电焊机,2024,54(10):1-9,9.
