Abstract
The microstructure distribution rule of semi-solid AZ91D alloy treated by ultrasonic was researched, and mechanical properies of specimens before and after ultrasonic treatment were investigated further.Semi-solid AZ91D melt specimens were processed by ultrasonic under different powers, and its microstructures and mechanical properties at different sampling points in specimens were obtained. The experimental results show that the microstructure of AZ91D alloy at different sampling points under the same ultrasonic power is different in grain size and shape, and there is also great difference among their microstructures at the same sampling point under different ultrasonic powers. AZ91D alloy treated by ultrasonic can obtain increment in both tensile strength and plasticity. Under same ultrasonic power, mechanical properties of specimen at different sampling points have obvious difference, and regularity for change of mechanical properties everywhere is similar to regularity for change of grain size and shape everywhere.
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Funded by the National Science Foundation of China(50465003), and the Project Funded by Science and Technology Department of Jiangxi Province, China(20061B0102200)
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Chen, G., Zhou, T., Yan, H. et al. Effects of ultrasonic field on microstructures and properties of semi-solid AZ91D magnesium alloy. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 25, 555–560 (2010). https://doi.org/10.1007/s11595-010-0042-y
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DOI: https://doi.org/10.1007/s11595-010-0042-y