|本期目录/Table of Contents|

体心立方晶体铁在双轴作用下的结构稳定性研究(PDF)

《内蒙古大学学报(自然科学版)》[ISSN:1000-9035/CN:22-1262/O4]

期数:
2018年04期
页码:
376-382
栏目:
研究论文
出版日期:
2018-05-15

文章信息/Info

Title:
Structural Stability Analysis of BCC Crystal Fe under Biaxial Loading
作者:
王景州代永杰
鄂尔多斯应用技术学院,鄂尔多斯 017000
Author(s):
WANG Jing-zhouDAI Yong-jie
Ordos Institute of Technology,Ordos 017000,China
关键词:
改进分析型嵌入原子法 结构稳定性 理论强度 稳定区域
Keywords:
MAEAM structural stability theoretical strength stable region
分类号:
-
DOI:
-
文献标识码:
A
摘要:
采用改进分析型嵌入原子法对体心立方晶体铁在双轴载荷作用下的结构稳定性和理论强度进行了研究.根据Milstein修正的单轴载荷下的Born稳定判据,推导出了晶体在双轴载荷下的稳定性判据.结果表明,在压缩区域出现的无应力面心四方相是不稳定的,会自发的滑向近邻无应力亚稳态体心四方相.体心立方晶体铁在双轴载荷下稳定范围是0.2657~0.2989nm,对应的压应力和张应力分别为43.73eV/nm3和34.14eV/nm3.
Abstract:
The structural stability and theoretical strength of body center cubic crystal Fe under biaxial loading are investigated with the modified analytic embedded atom method.According to Milstein modified Born stability criteria under uniaxial loading,the stability criteria under biaxial loading are deduced.The results show that a stress-free face centered cubic phase appearing in the compressive region is unstable and would slip spontaneously into a near neighbor stress-free metastable state body center tetragonal phase.The stable region ranges from 0.2657 to 0.2989nm of body center cubic crystal Fe under biaxial loading,the corresponding compressive stress and tensile stress are 43.73 and 34.14eV/nm3,respectively.

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备注/Memo

备注/Memo:
收稿日期:2018-01-14;修回日期:2018-04-24
基金项目:内蒙古自治区高等学校科研基金(NJZY16372)
作者简介:王景州(1978-),男,内蒙古鄂尔多斯人,2014级博士研究生.
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