Effect of long period stacking ordered structure on the damping capacities of Mg-Ni-Y alloys
Effect of long period stacking ordered structure on the damping capacities of Mg-Ni-Y alloys
复制标题
长周期堆垛有序结构对Mg-Ni-Y合金阻尼性能的影响
DOI：
10.1016/j.msea.2014.11.011
复制
发表时间：
2015-01-29
期刊：
影响因子：
6.4
通讯作者：
Pan, Fusheng
中科院分区：
文献类型：
--
作者：
Qin, Dezhao;Wang, Jingfeng;Pan, Fusheng
对Mg-Ni-Y合金的显微组织和减振性能进行了综合研究和比较。研究表明，长周期堆积有序(LPSO)结构有利于提高整体减振能力。当应变大于1×10(-3)时，Mg-8.51%Ni-15.25%Y属于高阻尼态金属(Q(-1)>；=0.1)。随着LPSO相的增加，合金的临界应变幅值逐渐减小，合金更容易脱离钉扎。此外，Mg-Ni-Y合金的应变幅值无关阻尼值和应变幅值相关阻尼值都有所增加。合金的减振能力不能仅用格拉纳托-卢克理论来解释。(C)2014爱思唯尔B.V.保留所有权利。
The microstructure and damping capacities of the Mg-Ni-Y alloys were researched and compared synthetically. This study showed that long period stacking ordered (LPSO) structures were conducive to the overall damping capacities. Mg-8.51%Ni-15.25%Y can be classified as high damping metals (Q(-1) >= 0.1) at strains exceeding 1 x 10(-3). With increased LPSO phase, the critical strain amplitudes of alloys gradually decreased so that the alloys could more easily break away from pinning. In addition, the strain amplitude-independent damping and strain amplitude-dependent damping of the Mg-Ni-Y alloys both increased. The damping capacities of the alloys cannot be explained by the Granato-Lucke theory alone. (C) 2014 Elsevier B.V. All rights reserved.