メカニカルアロイング法によるAl-Mg_2Si-酸化物系P/M材の特性

概要

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With a purpose of obtaining light weight materials of high strength, powder mixture of aluminum and magnesium silicide (Mg2Si) was mechanically alloyed with addition of oxide (Cr2O3, Fe2O3, MnO2) powder. The mechanically alloyed powders were consolidated to the P/M materials by vacuum hot pressing and hot extrusion, and their structures and mechanical properties were examined and compared with hyper-eutectic Al-Si based P/M materials. All the P/M materials of Al-Mg2Si-oxide showed high compressive strength above 900 MPa. Among them, the highest strength of 1090 MPa was obtained for Al-Mg2Si-Fe2O3. Even the P/M material of Al-Mg2Si without oxide addition showed compressive strength of 795 MPa. The Al-Mg2Si based P/M materials showed higher compressive strength and higher ductility than hyper-eutectic Al-Si based P/M materials.
社団法人粉体粉末冶金協会の論文
2007-02-15