材料科学
位错
打滑(空气动力学)
交叉口(航空)
纳米尺度
复合材料
图层(电子)
分子动力学
凝聚态物理
结晶学
纳米技术
化学
物理
计算化学
工程类
热力学
航空航天工程
作者
Mahshad Fani,Wu-Rong Jian,Yanqing Su,Shuozhi Xu
出处
期刊:Materials
[MDPI AG]
日期:2024-01-20
卷期号:17 (2): 501-501
被引量:1
摘要
The exceptional strength of nanolaminates is attributed to the influence of their fine stratification on the movement of dislocations. Through atomistic simulations, the impact of interfacial structure on the dynamics of an edge dislocation, which is compelled to move within a nanoscale layer of a nanolaminate, is examined for three different nanolaminates. In this study, we model confined layer slip in three structures: nanolaminated Ag and two types of Ag/Cu nanolaminates. We find that the glide motion is jerky in the presence of incoherent interfaces characterized by distinct arrays of misfit dislocations. In addition, the glide planes exhibit varying levels of resistance to dislocation motion, where planes with intersection lines that coincide with misfit dislocation lines experience greater resistance than planes without such intersection lines.
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