2550 セミソリッドプロセッシングにおけるAl-Ni金属間化合物の生成と成形(S28 溶融加工・セミソリッド加工,S28 溶融加工・セミソリッド加工の動向とその展開)

概要

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It seems to be possible that the intermetallic compound is formed under condition of solid-liquid state by heating at fusion temperature of lower melting metal in powder mixture. This study was investigated on formation of intermetallic compound from solid-liquid state when Al-42mass%Ni powder mixture was heated with various heating rates. The Al-Ni solid solution forms at low temperature than the melting point of aluminum and then the solid-liquid state forms with high exothermic heat by fusion of the solid solution. After solidification from this state, microstructures of the Al-Ni alloy are constituted by Al_3Ni_2 and Al_3Ni intermetallic phases and eutectic structure. The same microstructure in the Al-Ni alloy backward-extruded under condition of the solid-liquid state is constituted.
社団法人日本機械学会の論文
2007-09-07