热处理对激光沉积修复TA15组织和性能的影响
Effect of Heat Treatment on Microstructure and Properties of Laser Deposition Repair TA15 Titanium Alloy
马闯 1刘让贤 1文武2
作者信息
- 1. 张家界航空工业职业技术学院,湖南 张家界 427000
- 2. 中机生产力促进中心,北京 100044
- 折叠
摘要
应用激光沉积修复(LDR)技术对TA15 钛合金进行修复试验,对试样进行多种热处理,并观察其显微组织,测试其拉伸性能,分析其断口形貌.结果表明,退火态组织有粗大的原始柱状β晶粒,晶粒内有细小的网篮组织;退火态拉伸试样综合拉伸性能良好,达到了航空用锻件退火力学性能标准.固溶时效后,高温β相发生马氏体转变,得到了初生α相和六方马氏体α'两种组织,抗拉强度显著提高.
Abstract
TA15 alloy was repaired by laser deposited repair with various heat treatments,and microstructure and tensile properties and fracture morphology were investigated.Results indicate that annealed state has coarse primitive columnar β with small lamellar basket weave structure.The comprehensive tensile performance of the annealed state specimen is good and meet the mechanical performance standards for annealed aviation forging.After solid solution-aging treatment,martensitic transformation occurs in β phase,the primary α phase and hexagonal martensite α'are obtained.The tensile properties of repair specimen after solid solution-aging are obviously improved.
关键词
激光沉积修复/钛合金/热处理/显微组织/拉伸性能Key words
Laser deposition repair/Titanium alloy/Heat treatment/Microstructure/Tensile properties引用本文复制引用
基金项目
湖南省教育厅科学研究项目(22C1375)
出版年
2024
NETL
NSTL
万方数据