Welding of Fe-Al intermetallic compound and steel by SPS technology
The welding between Fe-Al intermetallic compound and high-strength steel was done via SPS technology.Microstructure,elements concentration and micro-hardness of welding joint were examined.The results indicated that there was no obvious welding heat-affected zone in both Fe-Al intermetallic compound and high-strength steel.The HAZ microstructures of high-strength steel were mainly martensite.In Fe-Al intermetallic compound,the grain size of heat-affected zone was larger than that of base metal and the density of heat-affected zone was lower than that of base metal.Besides,the grains of base metal had deformation phenomena.The welding joint had steady performance and the connection was reliable.Under the influence of chemical potential differences,unidirectional impulses discharge current and axial pressure,elements diffused perfectly in a short period of time.
spark plasma sintering dissimilar material welding
Guodong Zhang Yadong Xiao Nian Liu Min Hong
Wuhan University, Wuhan, China wuhan engineering institute, Wuhan, China
国际会议
昆明
英文
582-585
2012-10-12（万方平台首次上网日期，不代表论文的发表时间）