高速圧縮変形によるAl-Mg合金の結晶組織制御

抄録

For weight saving of the transportation equipment, aluminum alloy is widely used in place of steel as structure materials. In this study, we investigate the strengthening Al-Mg alloys by severe plastic deformation, since the alloying element of magnesium is one of the abundant elements. We carried out a high-speed compression examination for Al-4Mg and Al-4Mg-0.4Si (mass%) at 200, 300 °C and compared strength and deformation response. From experimental results, the Al-4Mg-0.4Si alloy showed the higher yield stress than Al-4Mg alloy. In addition, the strain hardening rate decreased with increasing temperature for all present alloys, and the value of the Al-4Mg-0.4Si alloy showed lower value than that of Al-4Mg alloy.