Al-1.3^W/_0Mg_2Si合金の時効析出におけるIn添加

概要

論文の詳細を見る
The effect of additional element In on G.P. zone formation and transition phase precipitation in Al-1.3^W/_0Mg_2Si alloy were investigated by the change of resistivity and agehardening measurement. The result obtained were summarized as follows: (1) The ageing behavior at a temperature below 200℃ was delayed by the effect of additional element In. This effect became more remarkable with decreasing temperature. (2) At ageing temperature above 200℃, the rate of age-hardening and decomposition of supersaturated solid solution were increased by the additional element In. (3) The quenched resistivity and hardness were not changed within experimental error by the effect of additional element In. (4) The solvus temperature of Al-1.3^W/_0Mg_2Si-0.05^W/_0In and Al-1.3^W/_0Mg_2Si alloy were almost the same and were 530 and 517℃ respectively. These were below the solid solution temperature in the present experiment. Though the suppresion of G.P. zone formation with a small addition of In cannot be explained by the decrease of supersaturation degree of the α-phase, it may be explained by the vacancy trapping model.
明治大学の論文
1974-00-00