无定形固体
纳米复合材料
变形(气象学)
极限抗拉强度
可塑性
延展性(地球科学)
复合材料
物理
非晶态金属
变形机理
材料科学
结晶学
微观结构
化学
蠕动
作者
Haiyang Song,Yulong Li
出处
期刊:Physics Letters A
日期:2015-06-19
卷期号:379 (36): 2087-2091
被引量:41
标识
DOI:10.1016/j.physleta.2015.06.038
摘要
The effects of amorphous boundary (AB) spacing on the deformation behavior of crystalline/amorphous (C/A) Mg/MgAl nanocomposites under tensile load are investigated using molecular dynamics method. The results show that the plasticity of nano-polycrystal Mg can be enhanced with the introduction of C/A interfaces. For samples 5.2 nm in AB spacing and larger, the superior tensile ductility and nearly perfect plastic flow behavior occur during plastic deformation. The studies indicate that the cooperative interactions between crystalline and amorphous are the main reason for excellent ductility enhancements in C/A Mg/MgAl nanocomposites.
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