バルクメカニカルアロイング法による高強度マグネシウム複合材料の開発

抄録

The original bulk mechanical alloying installation (Equal Channel Angular Bulk Mechanical Alloying; ECABMA) was developed in this research. The ECABMA installation can produce a magnesium composite billet whose diameter * length is 80 mm * 200 mm. The magnesium composite billet, in which a large quantity of secondary particles was dispersed uniformly, can be produced by the ECABMA installation. AM60 magnesium alloy chip mixed with yttrium oxide powder was processed into a magnesium composite billet by the ECABMA, and then it was heated at 350°C and extruded into a round bar whose diameter * length was 20 mm * 1000 mm. The extruded magnesium composite has high strength and good creep resistance at 175°C.