Effects of Electric Pulse Modification on the Hot Tearing of Al-5%Cu-0.8%Mn Alloy
It was investigated that the effect of electric pulse modification (EPM) on the hot tearing of Al-5%Cu-0.8%Mn alloy. The results indicate that hot tearing tendency of all samples can be reduced treated by electric pulse with different parameters, moreover, hot tearing stress of alloy with EPM was enhanced 3 times or so than that of samples without treatment. Decreasing the quantity of eutectic in grain boundaries, decreasing the end-solidifying temperature of the alloys, and refining the grains are main causations for increasing hot tearing resistance of Al-5%Cu-0.8%Mn alloy by electric pulse modification.
Jianzhong Wang and Jingang Qi
B. Wang et al., "Effects of Electric Pulse Modification on the Hot Tearing of Al-5%Cu-0.8%Mn Alloy", Advanced Materials Research, Vols. 299-300, pp. 399-402, 2011