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首页> 外文期刊>Philosophical Magazine Letters >Change in damping capacity arising from twin-boundary segregation in solid-solution magnesium alloys
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Change in damping capacity arising from twin-boundary segregation in solid-solution magnesium alloys

机译：固溶镁合金双边界偏析产生阻尼能力的变化

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摘要

The change in twin-boundary mobility that is caused by twin-boundary segregation was investigated in pure magnesium and four binary solid-solution magnesium alloys (Mg-Ag, Mg-Sn, Mg-Y and Mg-Zn alloys). The damping capacity in the vicinity of {10 (1) over bar2} twin boundaries was measured before and after annealing by nano-dynamic mechanical analysis. The subsequent annealing process led to a lower damping capacity in all magnesium binary alloys, which was in contrast to the results in pure magnesium. This is on account of the segregation of solute atoms in incoherent twin boundaries. The alloying elements, which have the characteristic of a low segregation energy for twin boundaries, effectively prevents the damping capacity degradation.
机译：研究了纯镁和四种二元固溶体镁合金（Mg-Ag、Mg-Sn、Mg-Y和Mg-Zn合金）中由孪晶偏析引起的孪晶迁移率变化。通过纳米动态力学分析，测量了退火前后bar2}孪晶界{10（1）附近的阻尼能力。随后的退火过程导致所有镁二元合金的阻尼能力较低，这与纯镁的结果相反。这是由于溶质原子在非相干孪晶界中的偏析。合金元素具有孪晶界低偏析能的特点，有效地防止了阻尼能力的退化。

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