Grain refinement and precipitation in Al-0.5%Si-0.5%Ge alloy fabricated by ARB process

Keiyu NAKAGAWA、Nobuhiro TSUJI、Daisuke TERADA and Teruto KANADANI

The 18th International Conference on Aluminium Alloys

The Japan Institute of Light Metals

富山市

Results showed that the hardness of the starting specimen of the ultrafine Al-0.5%Si-0.5%Ge alloy was about 2.3 times higher than that of the coarse-grained specimen. The hardness of ultrafine Al-0.5%Si-0.5%Ge alloy aged at 473K decreased monotonously with increasing aging time. On the other hand, ultrafine Al-0.5%Si-0.5%Ge alloy aged at 373K showed increase in hardness.