双晶晶界力学性能和氢扩散分析  

Twin Grain Boundary Mechanical Properties and Hydrogen Diffusion Analysis

作　　者：张文娟 杨帆[1] 陈超鹏 ZHANG Wenjuan;YANG Qinfan;CHEN Chaopeng(Xi’an Aviation Vocational and technical college,Xi’an 710089,China)

机构地区：[1]西安航空职业技术学院,西安710089

出　　处：《自动化与仪器仪表》2024年第4期37-39,46,共4页Automation & Instrumentation

基　　金：海洋腐蚀与防护国防重点实验室开放基金(61429010102)。

摘　　要：为了分析双晶晶界的力学性能和氢原子的扩散规律及影响因素,建立双晶弹性本构模型,分析加载载荷,晶粒取向和材料属性对双晶晶界力学场和氢扩散的影响。结果表明,加载载荷对晶界处的应力差和氢浓度差有促进作用;随着晶体取向差的增大,晶界处的应力差和氢浓度差依次增大;在晶界处β钛合金的应力差值和氢浓度差值高于α钛合金。In order to analyze the mechanical properties of the twin grain boundary and the diffusion law of hydrogen atoms and the influencing factors,an elastic constitutive model of the twin crystal was established,and the effects of loading load,grain orientation and material properties on the mechanical field and hydrogen diffusion of the twin grain boundary were analyzed.The results show that the stress difference and the hydrogen concentration difference at the grain boundary are promoted by the loading load;with the increase of the crystal orientation difference,the stress difference and the hydrogen concentration difference at the grain boundary increase in turn;at the grain boundaryβtitanium alloy The stress difference and hydrogen concentration difference ofαare higher than those ofα-titanium alloy.

关 键 词：双晶模型 晶体取向 应力场 氢扩散 

分 类 号：TH14[一般工业技术—材料科学与工程]