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Influence of impurities on damping properties of ZK60 magnesium alloy

期刊名称：Transactions of Nonferrous Metals Society of China
时间：0
页码：1305-1310
语言：英文
分类：TG113.12[金属学及工艺—物理冶金;金属学及工艺—金属学] TS36[轻工技术与工程]
作者机构：[1]College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China, [2]National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China
相关基金：Project（50725413） supported by the National Natural Science Foundation of China; Project（2009BB4215） supported by the Natural Science Foundation of Chongqing Science and Technology Commission, China; Project （2008AB4114） supported by the Major Program of Chongqing Science and Technology Commission, China
相关项目：材料制备加工科学与工程

关键词： ZK60镁合金, 杂质含量, 阻尼性能, 拉伸屈服强度, 位错模型, 第二相粒子, 阻尼能力, 动态力学, ZK60 magnesium alloy, impurities, damping, dislocation

中文摘要：

在当演员组抑制 ZK60 镁合金的能力上的杂质的影响，同样渗出、对待 T4 的状态被动态地机械的分析器在房间温度调查。Granato 和 Lucke 脱臼卡住模型被采用解释抑制合金的性质。它被发现那减少的杂质内容罐头减少秒阶段粒子的数量，增加谷物尺寸并且改善稍微抑制当演员组合金的能力。有更低的杂质内容的同样渗出的合金被发现拥有更高显然与更高的杂质集中比那在相对高的紧张区域抑制能力，它看起来主要从不同脱臼特征发源。在答案处理以后与杂质内容的变化抑制性质的变化趋势也类似于那在同样渗出并且当演员组状态。同时，合金的纯化处于同样渗出的状态在张力的收益力量导致明显的改进。

英文摘要：

The influence of impurities on damping capacities of ZK60 magnesium alloys in the as-cast, as-extruded and T4-treated states was investigated by dynamically mechanical analyzer at room temperature. Granato and Lucke dislocation pinning model was employed to explain damping properties of the alloys. It is found that reducing impurity content can decrease the amount of second-phase particles, increase grain size and improve damping capacity of the as-cast alloy slightly. The as-extruded alloy with lower impurity content is found to possess obviously higher damping capacity in the relatively high strain region than that with higher impurity concentration, which appears to originate mainly from different dislocation characteristics. The variation tendency of damping property with change of impurity content after solution-treatment is also similar to that in the as-extruded and as-cast states. Meanwhile, the purification of the alloy results in an evident improvement in tensile yield strength in the as-extruded state.

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