Study on damping behavior of A356 alloy after grain refinement

被引：31
|
作者：
Zhang, Yijie [1 ,2 ]
Ma, Naiheng [2 ]
Wang, Haowei [2 ]
Li, Xianfeng [2 ]
机构：
[1] Yantai Univ, Sch Environm & Mat Engn, Shandong 264005, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China
来源：
MATERIALS & DESIGN | 2008年 / 29卷 / 03期
关键词：
D O I：
10.1016/j.matdes.2007.03.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Damping capacity of A356 alloy refined by AlTiB master alloy was investigated over a temperature range of 30-300 degrees C using a dynamic mechanical thermal analyzer. Samples of dimensions 50 x 5 x 1 mm for damping measurement were obtained by spark machining. Experimental results show that refined A356 alloy exhibits much higher damping capacity than that of A356 base alloy. With testing condition of room temperature and frequency of 1 Hz, the damping capacity is 12.3 x 10(-3) for refined A356 alloy, increased by 8 x 10(-3) compared to A356 base alloy. The improvement in damping capacity of refined A356 alloy is ascribed to the change of Si size and grain refinement. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：706 / 708
页数：3
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