Zr含量对Mg-Zr粉末冶金阻尼合金材料性能的影响

刘子利 沈平 周桂斌 刘希琴 刘伯路

刘子利, 沈平, 周桂斌, 刘希琴, 刘伯路. Zr含量对Mg-Zr粉末冶金阻尼合金材料性能的影响[J]. 航空材料学报, 2011, 31(5): 12-17.
引用本文: 刘子利, 沈平, 周桂斌, 刘希琴, 刘伯路. Zr含量对Mg-Zr粉末冶金阻尼合金材料性能的影响[J]. 航空材料学报, 2011, 31(5): 12-17.
LIU Zi-li, SHEN Ping, ZHOU Gui-bin, LIU Xi-qin, LIU Bo-lu. Effects of Zr Contents on Properties of Mg-Zr PM Damping Alloys[J]. Journal of Aeronautical Materials, 2011, 31(5): 12-17.
Citation: LIU Zi-li, SHEN Ping, ZHOU Gui-bin, LIU Xi-qin, LIU Bo-lu. Effects of Zr Contents on Properties of Mg-Zr PM Damping Alloys[J]. Journal of Aeronautical Materials, 2011, 31(5): 12-17.

Zr含量对Mg-Zr粉末冶金阻尼合金材料性能的影响

基金项目: 

江苏省科技支撑计划项目(BE2010103);江苏省自然科学基金(BK2009577);常熟市工业攻关项目(CC200913)

详细信息
    作者简介:

    刘子利(1968- ),男,博士,副教授,(E-mail)zililiu@sohu.com.

  • 中图分类号: TG146.2;TG146.4

Effects of Zr Contents on Properties of Mg-Zr PM Damping Alloys

  • 摘要: 采用粉末冶金法制备了Mg-x%Zr阻尼合金(x=0.6,1.5,2.5,5,质量分数,下同),通过三点弯曲测试和DMA技术等手段研究了Zr含量对Mg-Zr合金的组织、力学性能和阻尼性能的影响.结果表明,随着Zr含量增加,组织演变为条带状结构,同时在晶界及晶内出现点状颗粒,晶粒更加细化.Mg-x%Zr阻尼合金的致密度、硬度、抗弯强度随着Zr含量增加而提高,Zr含量为2.5%的合金的致密度、抗弯强度和显微硬度达到最大值.在频率5Hz,应变振幅6×10-5的测试条件下,Mg-5%Zr合金的阻尼性能最好,阻尼值tanφ达到0.084,Mg-1.5%Zr次之,Mg-2.5%Zr合金的阻尼性能最差.在27~100℃的温度范围内,Mg-x%Zr合金阻尼性能随温度升高而缓慢提高,在高于100℃后,合金阻尼性能随温度的升高迅速增加,并在160℃出现阻尼峰.Mg-1.5%Zr合金的阻尼峰温度随频率增大而升高,呈现出弛豫型阻尼特征.

     

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  • 刊出日期:  2011-10-01

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