Effect of ball-milling parameter on mechanical and damping properties of sintered Mg-Zr alloy

Effects of ball-milling parameter on structures and properties of sintered Mg-l.5Zr （mass fraction, %） alloy were researched by metallographic analysis, mechanical properties tests and DMA technology. The results indicate that with 310 r/min rotation speed, the microstructure of the sintered alloy i...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2010-11, Vol.20 (11), p.2092-2095
Main Author: 刘子利 刘希琴 沈平 朱秀荣 孟亮
Format: Article
Language:English
Subjects:
ball-milling parameter
China
Damping
damping capacities
Magnesium base alloys
Mechanical properties
Mg-Zr alloy
Microhardness
Microstructure
Milling (machining)
Sintering
Zirconium
力学性能
旋转速度
机械性能测试
烧结合金
球磨参数
锆合金
阻尼性能
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Summary:Effects of ball-milling parameter on structures and properties of sintered Mg-l.5Zr （mass fraction, %） alloy were researched by metallographic analysis, mechanical properties tests and DMA technology. The results indicate that with 310 r/min rotation speed, the microstructure of the sintered alloy is greatly refined, and Zr-phase distributes uniformly. The micro-hardness, bending strength and damping capacities are the greatest under 310 r/min rotation speed. The damping peak of sintered Mg-l.5Zr alloy increases with increasing frequency under the testing conditions. The relaxation time meets the Arrhenius relationship, and shows the characteristics of relaxation damping.
ISSN:1003-6326
DOI:10.1016/S1003-6326(09)60423-4