Physics and model of strengthening by parallel stacking faults
Physics and model of strengthening by parallel stacking faults
复制标题
平行堆垛层错强化的物理和模型
DOI：
10.1063/1.4822323
复制
发表时间：
2013-09-23
影响因子：
4
通讯作者：
Mathaudhu, S. N.
中科院分区：
文献类型：
--
作者：
Jian, W. W.;Cheng, G. M.;Mathaudhu, S. N.
我们最近报道了平行堆垛层错（SF）可以极大地提高镁合金的强度。发现强化随着平均SF间距d的倒数线性增加。在这项研究中，我们分析了位错与SFs的相互作用，然后提出了一个基于物理的模型来解释屈服强度和SFs间距之间的关系。类似的经验霍尔-佩奇关系的晶粒尺寸，预计这种强化机制将适用于各种材料的工程与平行间隔堆垛层错在宽范围的故障间距。(C)2013 AIP Publishing LLC.
We have recently reported that parallel stacking faults (SFs) can tremendously increase the strength of a magnesium alloy. The strengthening is found to increase linearly with the reciprocal of the mean SF spacing, d. In this study we analyze dislocation interactions with SFs, and then propose a physics-based model to explain the observed relationship between yield strength and SFs spacing. Similar to the empirical Hall-Petch relationship for grain size, it is expected that this strengthening mechanism will hold true for a variety of materials engineered with parallel spaced stacking faults over a wide range of fault spacing. (C) 2013 AIP Publishing LLC.