Effects of ultrasonic field on microstructures and properties of semi-solid AZ91D magnesium alloy |
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| Authors: | Guoping Chen Tianrui Zhou Hong Yan Ke Li |
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| Affiliation: | (1) Magnesium Research Institute, P.O. Box 1195, Beer-Sheva, 84111, Israel;(2) Department of Materials Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, 84105, Israel;(3) Department of Metallurgy and Materials Science Engineering, Mugla University, Mugla, 48170, Turkey |
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| 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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