Effects of Mechanical Vibration on Modification of AZ91D Magnesium Alloy in Lost Foam Casting

Li Jiqiang; Fan Zitian; Tian Xuefeng; Dong Xuanpu; Wang Yuanqing

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Effects of Mechanical Vibration on Modification of AZ91D Magnesium Alloy in Lost Foam Casting
Issue 9, Pages: 581-583(2006)
Published： 2006 ，
DOI：

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[1]李继强,樊自田,田学峰,董选普,王元庆.基于消失模铸造的AZ91D镁合金振动改性研究[J].特种铸造及有色合金,2006(09):581-583+534.

Li Jiqiang, Fan Zitian, Tian Xuefeng, et al. Effects of Mechanical Vibration on Modification of AZ91D Magnesium Alloy in Lost Foam Casting. [J]. Special Casting & Nonferrous Alloys (9):581-583(2006)
[1]李继强,樊自田,田学峰,董选普,王元庆.基于消失模铸造的AZ91D镁合金振动改性研究[J].特种铸造及有色合金,2006(09):581-583+534. DOI：

Li Jiqiang, Fan Zitian, Tian Xuefeng, et al. Effects of Mechanical Vibration on Modification of AZ91D Magnesium Alloy in Lost Foam Casting. [J]. Special Casting & Nonferrous Alloys (9):581-583(2006) DOI：

摘要

研究了机械振动处理技术对AZ91D镁合金在消失模铸造条件下组织形貌以及力学性能的影响

并探讨了振动细化机理。结果表明:机械振动能显著地细化AZ91D合金的铸态组织

改善其力学性能

提高其抗拉强度

当激振力为1.5kN时

合金抗拉强度最高

而当激振力进一步增加时

由于组织中出现微观缩松

强度有所降低。

Abstract

Effects of mechanical vibration on microstructure and mechanical properties of AZ91D magnesium alloy in lost foam casting have been investigated

and its vibration refinement mechanism is understood. The results show that mechanical vibration can significantly refine the as-cast microstructure of the AZ91D magnesium alloy to improve the mechanical properties. The maximum tensile strength can be obtained with the vibrated force of 1.5 kN. With the further increase of the vibrated force

the tensile strength of the Mg alloy can be somewhat decreased arising from the formation of micro-porosity in the microstructure.