Ideal shear strain of metals and ceramics

被引：330

作者：

Ogata, S ^{[1
]}

Li, J

Hirosaki, N

Shibutani, Y

Yip, S

机构：

[1] MIT, Dept Nucl Engn, Cambridge, MA 02139 USA

[2] Osaka Univ, Handai Frontier Res Ctr, Osaka 5650871, Japan

[3] Osaka Univ, Dept Mech & Syst Engn, Osaka 5650871, Japan

[4] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA

[5] Natl Inst Mat Sci, Adv Mat Lab, Ibaraki 3050044, Japan

[6] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.70.104104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using density functional theory we analyze the stress-strain responses of 22 simple metals and ceramics to determine the maximum shear strain a homogeneous crystal can withstand, a property for which we suggest the name shearability. A shearability gap is found between metals and covalent ceramics. Shearability of metals further correlates with the degree of valence charge localization and directional bonding. Depending on the deformation constraints, ionic solids may possess even larger shearability than covalent solids. The Frenkel model of ideal shear strength works well for both metals and ceramics when shearability is used in the scaling.

引用

页码：104104 / 1

页数：7

共 34 条

[31] Stainless steel optimization from quantum mechanical calculations [J].