Exploring the Possibility of Deformation Twinning in Pure Aluminum

被引：4

作者：

Cai, Tuo ^{[1
]}

Zhang, Zhen-Jun ^{[1
]}

Yang, Jin-Bo ^{[1
]}

Zhang, Zhe-Feng ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2016年 / 29卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Metals and alloys; Deformation twinning; First-principles; Density functional theory; MECHANICAL-PROPERTIES; TWINS; AL;

D O I：

10.1007/s40195-016-0436-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Can aluminum generate deformation twins? Contradictories exist among the experimental results, theoretical predictions, and molecular dynamics simulations. Our first-principles calculations based on the full-potential linearly augmented plane wave method show that the bonding electron density of aluminum gathers at the tetrahedral interstices, and this specific electronic structure is in agreement with the experimental data from quantitative convergent-beam electron diffraction. In terms of this characteristic, the matching between the cohesive energy of local deformation twins with different thickness and global matrix can shed light on deformation twins in aluminum. This study may give a lane to insight into deformation twins in different metals.

引用

页码：647 / 651

页数：5

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