Influence of rolling on internal friction peak of Mg-3Cu-1Mn alloy
Influence of rolling on internal friction peak of Mg-3Cu-1Mn alloy
复制标题
轧制对Mg-3Cu-1Mn合金内耗峰的影响
DOI：
10.1016/s1003-6326(13)62638-2
复制
发表时间：
2013-06-01
影响因子：
4.5
通讯作者：
Liang, Hao
中科院分区：
文献类型：
--
作者：
Zhou, Hai;Wang, Jing-feng;Liang, Hao
采用动态力学分析方法研究了轧制态Mg-3Cu-1 Mn（CM 31）合金的阻尼性能。第一次加热中的内摩擦分别在118、190和320 ℃处显示出峰值P-1、P-2和P-3。在第一次加热Q（-1）曲线中出现了显著的P-3峰，而在第二次加热Q（-1）曲线中消失。采用光学显微镜、X射线衍射和电子背散射衍射分析研究了轧制对CM 31合金内耗峰的影响。结果表明，变形后CM 31合金的织构增强，孪晶迅速消失，出现P-3峰，证实了CM 31合金的3个内耗峰分别为位错阻尼峰、晶界阻尼峰和孪晶引起的再结晶峰。
The damping capacities of as-rolled Mg-3Cu-1Mn (CM31) alloy were studied by dynamic mechanical analyses. The internal friction in the first heating shows peaks P-1, P-2 and P-3 at 118, 190, and 320 degrees C, respectively. The significant peak P-3, which can not be found in the cast CM31 alloy, appears in the first heating Q(-1) curve and disappears in the second heating Q(-1) curve. The influence of rolling on the internal friction peaks of the CM31 alloy was investigated by optical microscopy, X-ray diffraction, and electron backscatter diffraction analyses. The results show that the textures are enhanced and the twins rapidly disappear while peak P-3 appears after deformation of the CM31 alloy, and confirm that the three internal friction peaks are the dislocation damping peak, grain boundary damping peak, and the recrystallization peak caused by twins, in the as-rolled CM31 alloy.