Characteristics of Extruded Mg alloy(AZ31) for various annealing temperatures

정수압 압출 소재의 열처리 조건에 따른 마그네슘합금(AZ31)의 특성 변화

Restoring ductility or removing residual stresses is a necessary operation when a large amount of cold working is to be performed, such as in a cold-forging or warm forging process. The advantage of annealing temperatures was investigated. After Hydrostatic Extrusion process, extruded materials were annealed at $200^{\circ}C,\;350^{\circ}C,\;450^{\circ}C$ for 1 hour. Microstructure of the annealed material was observed to make an understand about the difference in mechanical properties.