引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 35次   下载 40 本文二维码信息
码上扫一扫!
分享到: 微信 更多
TC17钛合金线性摩擦焊接头组织及性能
季亚娟, 张田仓, 张连锋, 郭德伦
中国航空制造技术研究院, 北京 100024
摘要:
文中针对航空发动机风扇及压气机盘TC17钛合金材料,开展了接头组织分析、拉伸性能测试及硬度测试,分析了接头不同部位组织特征及形成原因.结果表明,接头明显分为母材区(BM)、热力影响区(TMAZ)和焊合区(WZ),焊接接头中部热力影响区的组织表现为等轴晶粒,而靠近焊缝边缘处热力影响区的晶粒表现为沿着受力方向被拉长,焊合区发生了动态再结晶;接头的拉伸性能与母材相当;接头热力影响区的硬度高于母材和焊合区,平均硬度为486 HV.
关键词:  钛合金  线性摩擦焊  组织  拉伸  硬度
DOI:10.12073/j.hjxb.2019400253
分类号:TG453
基金项目:
Structure and mechanical property of TC17 linear friction welding joint
JI Yajuan, ZHANG Tiancang, ZHANG Lianfeng, GUO Delun
AVIC Manufacturing Technology Institute, Aeronautical Key Laboratory for Welding and Joining Technologies, Beijing 100024, China
Abstract:
TC17 titanium alloy which usually used on the fan and compressor disk were selected. Microstructure and mechanical property of joint were investigated. Microstructure character of different part of joint was analyzed also. Results showed that the joints included three zones, base metal (BM), thermal mechanical affected zone (TMAZ) and weld zone(WZ). The microstructure of joint middle part was equiaxial grains, but the bottom part was the elongated grains. Dynamic recrystallation happened at the weld zone. Tensile test result showed that joint tensile strength equal to the TC17 base metal. The average hardness value of the HAZ was 486 HV which was higher than that in the BM and WZ.
Key words:  titanium alloy  linear friction welding  microstructure  tensile strength  hardness