Microstructural Modification of Non-Combustible Magnesium Alloy by Friction Stir Processing
The microstructure of non-combustible magnesium alloy, AMX602, was modified by friction stir processing (FSP) at the tool rotational speed of 800 rpm and traveling speed of 300 mm/min. In the microstructure of the as-extruded material, some intermetallic compounds (IMCs), Al2Ca and Al-Mn, inhomogeneously distributed in the matrix. The inhomogeneity was dependent on the extruding condition. The largest size of IMCs was a few tens microns. By FSP, large IMCs were broken up, and fine IMCs were uniformly dispersed in the matrix. Furthermore, grain refinement occurred due to dynamic recrystallization.
Mohd Hamdi Abdul Shukor and Hao Gong
A. Afrinaldi et al., "Microstructural Modification of Non-Combustible Magnesium Alloy by Friction Stir Processing", Materials Science Forum, Vol. 880, pp. 25-28, 2017