标题：Interfacial Microstructural Characterization of Ti/Al Joints by Gas Tungsten Arc Welding
作者：Liu, Kun; Li, Yajiang; Wei, Shouzheng; Wang, Juan
作者机构：[Liu, Kun; Li, Yajiang; Wei, Shouzheng; Wang, Juan] Shandong Univ, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 250100, Peoples R 更多
通讯作者地址：[Li, YJ]5 Shandong Univ, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan, Peoples R China.
来源：MATERIALS AND MANUFACTURING PROCESSES
关键词：Aluminum; Intermetallic; Layer; Microstructure; Titanium; Welding
摘要：Ti/Al dissimilar materials were welded by gas tungsten arc welding with filler wires. Microstructure in the Ti/Al joint was studied with optical microscope, scanning electron microscope, energy-dispersive spectrometer, etc. Results show that various Ti-Al intermetallic compounds are formed along the interface. According to the degree of Ti alloy melted, interface is divided into different reaction layers. Under the effect of martensite transformation, microhardness in heat-affected zone is higher than it in titanium base metal. Element silicon enriched in the interface. The dispersive distribution of precipitated phase improved joint strength.