研究論文
Al–4%Si–0.4%Mg合金鋳造材の組織と機械的性質
1998 年 48 巻 10 号 p. 501-506
詳細
1998 年 48 巻 10 号 p. 501-506
Both solution and age treatment condition were systematically investigated in order to obtain prominent toughness of Al–4%Si–0.4%Mg casting alloy. Relation between microstructure and mechanical properties was studied from the viewpoints of morphology and size of eutectic Si particle and concentration of solute atoms. The excellent elongation to fracture and absorbed energy in the impact fracture were measured for the specimen solution treated at 838 K for 3 h. The elongation to fracture and absorbed energy of Al–4%Si–0.4%Mg alloy solution treated at 838 K for 3 h and subsequently aged at 418 K, showed about 75% and 180% increase in comparison with those of AC4CH alloy, respectively.
