Influence of MM on Microstructure and Properties of AZ91 Mg Alloy
Wang Lishi Duan Hanqiao Wei Bokang Zhang Shichang (Huazhong University of Science and Technology, Wuhan,China)
Effects of MM on the microstructure and properties of as cast and heat treated AZ91 Mg alloy were studied. The results showed that MM can improve significantly as cast microstructure of AZ91 Mg alloy, refining Mg 17 Al 12 phase and acicular phase occurred so as to increase in hardness and strength and decrease in impact toughness and elongation. During further solid solution heat treatment, the acicular phase is un dissolved in matrix. The ageing process of AZ91 Mg alloy was postponed with MM addition.
【CateGory Index】： TG146.22