Amirreza Jahangiri - Department of Manufacturing Engineering, FKM, Universiti Teknologi Malaysia, Johor, ۸۱۳۱۰, Malaysia
Mohd Hasbullah Idris - Department of Manufacturing Engineering, FKM, Universiti Teknologi Malaysia, Johor, ۸۱۳۱۰, Malaysia Department of Materials Engineering, FKM, Universiti Teknologi Malaysia, Johor, ۸۱۳۱۰, Malaysia
Saeed Farahany - Department of Materials Engineering, FKM, Universiti Teknologi Malaysia, Johor, ۸۱۳۱۰, Malaysia

The feasibility of joining an in situ Al-20%Mg2Si composite by TIG is investigated. Welding current was varied at five different values between 80 and 100 amp. Different areas were identified in the weldment region due to effect of welding specification. Mechanical properties of joints were evaluated by Tensile and microhardness tests. Joints welded with a welding current in the range of 80-85 amp displayed the highest degree of hardness. The fracture produced in the welded specimens was in the base metal MMC, indicating a strong interface between the base MMC and the weld. Therefore, the study finds that in situ Al-Mg2Si MMC can in fact be welded using TIG and Al-Si filler metal.

Aluminium; In-situ composite; Joining; TIG