Advanced   Register
IMR OpenIR  > 中国科学院金属研究所  > 期刊论文

题名: Local lattice distortion in high-entropy alloys
作者: Song, Hongquan;  Tian, Fuyang;  Hu, Qing-Miao;  Vitos, Levente;  Wang, Yandong;  Shen, Jiang;  Chen, Nanxian
发表日期: 2017-7-19
摘要: The severe local lattice distortion, induced mainly by the large atomic size mismatch of the alloy components, is one of the four core effects responsible for the unprecedented mechanical behaviors of high-entropy alloys (HEAs). In this work, we propose a supercell model, in which every lattice site has similar local atomic environment, to describe the random distributions of the atomic species in HEAs. Using these supercells in combination with ab initio calculations, we investigate the local lattice distortion of refractory HEAs with body-centered-cubic structure and 3d HEAs with face-centered-cubic structure. Our results demonstrate that the local lattice distortion of the refractory HEAs is much more significant than that of the 3d HEAs. We show that the atomic size mismatch evaluated with the empirical atomic radii is not accurate enough to describe the local lattice distortion. Both the lattice distortion energy and the mixing entropy contribute significantly to the thermodynamic stability of HEAs. However the local lattice distortion has negligible effect on the equilibrium lattice parameter and bulk modulus.
Appears in Collections:中国科学院金属研究所_期刊论文

Files in This Item:

There are no files associated with this item.

Recommended Citation:
Song, Hongquan,Tian, Fuyang,Hu, Qing-Miao,et al. Local Lattice Distortion In High-entropy Alloys[J]. Amer Physical Soc,2017,1(2):-.

SCI Citaion Data:
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Song, Hongquan]'s Articles
 [Tian, Fuyang]'s Articles
 [Hu, Qing-Miao]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Song, Hongquan]‘s Articles
 [Tian, Fuyang]‘s Articles
 [Hu, Qing-Miao]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to  Add to Digg  Add to Reddit 
所有评论 (0)
内 容:
Email:  *
验证码:   刷新
标 题:
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.



Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院金属研究所  -Feedback
Powered by CSpace