Abstract
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.
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