Ductile titanium alloy with low Poisson's ratio

被引：156

作者：

Hao, Y. L. ^{[1
]}

Li, S. J. ^{[1
]}

Sun, B. B. ^{[1
]}

Sui, M. L. ^{[1
]}

Yang, R. ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.98.216405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a ductile beta-type titanium alloy with body-centered cubic (bcc) crystal structure having a low Poisson's ratio of 0.14. The almost identical ultralow bulk and shear moduli of similar to 24 GPa combined with an ultrahigh strength of similar to 0.9 GPa contribute to easy crystal distortion due to much-weakened chemical bonding of atoms in the crystal, leading to significant elastic softening in tension and elastic hardening in compression. The peculiar elastic and plastic deformation behaviors of the alloy are interpreted as a result of approaching the elastic limit of the bcc crystal under applied stress.

引用

页数：4

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