| 2 | Microstructures and mechanical properties of AZ31-0.1Ca magnesium alloy produced by soft-contact electromagnetic casting and hot extrusion显示文摘An AZ31-0.1Ca magnesium alloy produced by Soft-contact electromagnetic continuous casting(SEMC) was investigated.The fine homogeneous structure and the precipitated phases were obtained by SEMC.The effects of microalloying of Ca and middle frequency electromagnetic field on AZ31-0.1Ca magnesium alloy were discussed.And the as-cast billets were extruded with different extrusion ratios subsequently.The alloy showed an ultrafine grain size of 2-5 μm due to dynamic recrytallization(DRX) in the course of hot extrusion.The comprehensive properties of the as-extruded alloy are the best at the extrusion ratio of 25,and the hardness,UTS and elongation are 73.9 HB,356.8 MPa and 16.5%,respectively. | Zheng REN Xingguo ZHANG Hai HAO Li SUI Tao ZHANG Yutao MA | 2010 | Acta Metallurgica Sinica(English Letters)2010，23，2： | 0 |
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