摘要
通过对钛合金热物理性能分析,比较了钛合金的搅拌摩擦焊特性;针对钛合金的特点特别设计和使用了可以满足钛合金搅拌摩擦焊的搅拌头、垫板、冷却和保护装置等;并且对Ti-6Al-4V钛合金的搅拌摩擦焊焊缝和接头进行了观察分析,还对接头力学性能进行了测试,初步试验结果表明搅拌摩擦焊可以实现钛合金焊接,接头强度可以达到母材强度90%以上,但是搅拌摩擦焊工艺、参数、搅拌头还需要进一步优化,性能指标还可以进一步提高。
According to the analysis of the thermophysical characteristics of several conventional titanium alloys, friction stir weldability of titanium alloy had been discussed in this paper. According to the features of Ti alloy, the pin tool, welding anvil and protecting device were designed and applied for the friction stir welding of Ti alloy. By observation of the weld appearances and microstructures of the joint, as well as the mechanical property testing, the results showed that Ti-6Al-4V alloy can be successfully welded by FSW, and tensile strength of the joint can reach up to 90% of the base metal. With optimization of the welding parameter, procedure, pin tool profile and material, the property and performance of FSW of Ti alloy shall be unproved.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2005年第11期83-88,共6页
Transactions of The China Welding Institution
关键词
搅拌摩擦焊
钛合金
焊接性
Mechanical properties
Microstructure
Soldered joints
Tensile strength
Titanium alloys
Weldability
