Effect of Filler on Appearance and Microstructure of Weld in TIG Welding SiCp Reinforced Al Matrix Composite

The weldability of SiCp/6061Al composite by TIG welding with filler and without filter was investigated.The results show that the inferior appearance of SiCp/6061Al composite TIG welding without filter is obtained.However,when the filler is used in TIG welding,the fluidity of molten pool is improved,and the interfacial reaction between SiCp and Al is effectively restrained,so that the satisfied ripple weld of SiCp/6061Al composite is achieved and joint property was improved.