摘要
通过焊具设计、接头微观组织与性能、焊接温度场和残余应力、热源辅助的搅拌摩擦焊(FSW)几个方面,全面介绍了高熔点材料搅拌摩擦焊技术的研究现状。结果表明,合适的搅拌头材料为钨铼(W-Re)合金和多晶立方氮化硼(PCBN);采用合适的焊具设计和工艺参数,可以得到具有良好微观组织、高强度的FSW接头;在模拟搅拌摩擦焊温度场和接头残余应力时,应依据焊接过程实际进一步完善物理模型;引入辅助热源有利于高熔点材料焊缝成形并提高焊具使用寿命。
The research status of friction stir welding(FSW) of high melting point materials was introduced from the aspects of FSW tool design, microstructural characteristics and mechanical properties of the joints, welding temperature distribution and residual stress and FSW assisted by hybrid heating sources. It indicates that the W-Re alloy and polycrystalline cubic boron nitride are suitable FSW tool materials. The FSW joints with high strength and fine microstructure can be produced when the proper tool geometry and welding parameters were used. For simulation of temperature distribution and residual stress in the FSW joints, physical models should be improved according to the real FSW process. The utilization of hybrid heating source is benefit to weld formation and tool life.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2007年第10期101-104,共4页
Transactions of The China Welding Institution
基金
哈尔滨工业大学优秀团队支持计划资助项目
关键词
高熔点材料
搅拌摩擦焊
焊具设计
微观组织
残余应力
辅助热源
high melting point materials
friction stir welding
tool design
microstructural characteristics
residual stress
hybrid heating source
