Effect of grain boundary structures on grain boundary sliding in magnesium
Effect of grain boundary structures on grain boundary sliding in magnesium
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DOI：
10.1016/j.matlet.2012.02.010
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发表时间：
2012-06-01
影响因子：
3
通讯作者：
Mukai, Toshiji
中科院分区：
文献类型：
--
作者：
Somekawa, Hidetoshi;Mukai, Toshiji
采用纳米压痕蠕变试验研究了镁合金晶界结构对晶界变形行为的影响。纳米压痕蠕变试验结果表明，晶界附近的变形机制主要是晶界滑动，但晶界滑动的发生与晶界能密切相关。高能量晶界表现出高的应变速率敏感性，这与其他金属材料的应变速率敏感性趋势相同。此外，添加到镁中的铝原子倾向于阻止晶界滑移，由于晶界能的降低。(C)2012爱思唯尔有限公司版权所有。
The effect of grain boundary structures on the deformation behavior at the grain boundaries in magnesium was examined by the nanoindentation creep test. The results of the nanoindentation creep test showed that the dominant deformation mechanism around the grain boundary was grain boundary sliding; however, the occurrence of grain boundary sliding was closely related to the grain boundary energy. The grain boundary with high energy showed high strain rate sensitivity, which was the same tendency as that of the other metallic materials. Furthermore, the addition of aluminum atoms into magnesium tended to prevent the grain boundary sliding due to the decrease in grain boundary energy. (C) 2012 Elsevier B.V. All rights reserved.