抄録
6061 aluminum alloy and model material of recycled 6061 aluminum alloy with increased Fe were cast into strips at a speed of 0.5m/s using an unequal diameter twin roll caster. The Fe content of 6061 aluminum alloy and the model material of recycled 6061 aluminum alloy was 0.36mass% and 0.59mass%, respectively. Ripple marks, which are typical surface defect of roll cast strips, did not occur on the surface of both as-cast strips. Fe content did not influence the surface condition of the roll-east-strip. The as-cast strip was cold rolled down to 1mm, T4 heat treatment was conducted, and then subjected to π rad (180°) bending test. The result π rad (180°) bending test shows that roll cast 6061 aluminum alloy and 6061 aluminum alloy with increased Fe as recycled material had the same bending ability as that of roll-cast 6022 aluminum alloy. In the strip casting by the twin roll caster of the present study, increased Fe content did not influence the results of the π rad (180°) bending test.
