宏观孔对锌铝共析合金阻尼行为的影响
Influence of Macroscopic Pores on Damping Behavior of Zn-Al Eutectoid Alloy
摘 要
采用空气加压渗流技术制备了含宏观孔的锌铝共析合金, 在25～400 ℃、低频率和低应变振幅条件下用多功能内耗仪测试了该合金的内耗和相对动力学模量, 研究了宏观孔对其阻尼行为的影响。结果表明: 宏观孔的引入提高了锌铝合金的阻尼性能, 与致密锌铝合金相比提高了2~4倍; 合金的阻尼性能随着宏观孔的减小、宏观孔孔隙率的增加、频率的减小和应变振幅的增加而增大。
内耗
宏观孔
锌铝共析合金
damping
internal friction
macroscopic pore
Zn-Al eutectoid alloy
Abstract
Foamed Zn-Al eutectoid alloys with macroscopic pores were prepared by air pressure infiltration process. The internal friction and relative dynamic modulus were tested on a multifunction internal friction apparatus (MFIFA) at low frequencies, low strain amplitude and over a temperature range of 25 to 400 ℃. The effects of macroscopic pores on the damping behavior of the alloy were studied. The results show that the damping capacity of the Zn-Al alloy was enhanced by introducing of the macroscopic pores which increased by 2-4 times in comparison with dense Zn-Al alloy. The damping capacity increased with decreasing the macroscopic pore size, increasing the porosity, decreasing the frequency and increasing the strain amplitude.
中图分类号 TB331
所属栏目
基金项目 江西省自然科学(青年)基金资助项目(0550050); 江西省教育厅科研资助项目(13-3-B-04)
收稿日期 2010/6/7
修改稿日期 2010/8/27
网络出版日期
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备注魏健宁(1973-), 男, 甘肃天水人, 教授, 博士。
引用该论文: WEI Jian-ning,JIANG Chang-shuang,XU Gao-ping,ZHOU Li-ling,XIE Wei-jun. Influence of Macroscopic Pores on Damping Behavior of Zn-Al Eutectoid Alloy[J]. Materials for mechancial engineering, 2011, 35(7): 11～13
魏健宁,江长双,徐高平,周利玲,谢卫军. 宏观孔对锌铝共析合金阻尼行为的影响[J]. 机械工程材料, 2011, 35(7): 11～13
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参考文献
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【6】魏健宁, 黄天成, 胡孔刚, 等.泡沫铝材料的阻尼机制[J].机械工程材料, 2007, 31(12): 27-29.
【2】魏健宁, 欧阳卫强, 余剑敏, 等.宏观石墨颗粒对工业纯铝阻尼行为的影响[J].机械工程材料, 2008, 32(8): 60-63.
【3】WEI J N, CHENG H F. Effects of macroscopic graphite particulates on the damping behavior of commercially pure aluminum[J].Materials Science and Engineering A, 2002, 325: 444-453.
【4】WEI J N, LI Z B, HAN F S. Damping behavior and mechanism of foamed Zn-Al eutectoid alloy[J].Physica Status Solid A, 2002, 191: 435-444.
【5】WEI J N, SONG S H, HU K G. Influence of macroscopic graphite particulates on the damping properties of Zn-Al eutectoid alloy[J].Science in China Series G: Physics, Mechanics and Astronomy, 2009, 52(1): 70-75.
【6】魏健宁, 黄天成, 胡孔刚, 等.泡沫铝材料的阻尼机制[J].机械工程材料, 2007, 31(12): 27-29.
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