J Mater Sci Technol ›› 2003, Vol. 19 ›› Issue (Supl.): 179-181.

• Research Articles • Previous Articles     Next Articles

Liquid-Phase-Impacting Diffusion Welding Mechanism and Microstructure of Welded joint of Al Matrix Composite SiCp/101A

Jitai NIU, Wei GUO, Qingchang MENG, Xinmei ZHANG, Xingqiu LIU, Guangtao ZHOU   

  1. The National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China;The National Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200030, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2003-12-28 Published:2009-10-10
  • Contact: Jitai NIU

Abstract: The liquid-phase-impacting (LPI) diffusion welding mechanism and microstructure of welded joint of aluminum matrix composite SiCp/101A have been studied. It shows that by LPI diffusion welding, the interface state between SiC particle and matrix is prominent, the harmful microstructure or brittle phase can be restrained from the welded joint. Moreover, the density of dislocation in the matrix near the interface and in the matrix are all so higher than that of parent composite, the dislocation entwists each other intensively resulted in welding the composite successfully.

Key words: Aluminum matrix composite, Liquid-phase-impacting diffusion welding, SiCp/101A