重型机械Issue(5)：15-20,6.
不锈钢复合板拉伸过程几何位错应力对晶界角的影响
Influence of geometrically necessary dislocation stress on grain boundary angle during tensile process of stainless steel composite clad plate
摘要
Abstract
In this study,through tensile testing of clad plates produced with different rolling processes,a theoretical model for the geometrically necessary dislocation stress and grain boundary misorientation in Q235 carbon steel substrate/304 stainless steel clad plates was developed.The relationship between geometrically necessary dislocation stress and grain boundary angles was subsequently calculated.The experimental results indicate that in the tensile sample with a 30%reduction rate,the fraction of low-angle grain boundaries(LAGBs)is33%,while that of high-angle grain boundaries(HAGBs)is 17.8%.For the sample with a 30%/20%reduction rate,the proportion of LAGBs in the carbon steel increased to 72%after tensile testing,while that of HAGBs decreased to 6.1%.When the reduction rate was raised to 35%/20%,the LAGBs further increased to 83%,and the HAGBs decreased to 5.3%.In the clad stainless steel of the same tensile samples,the proportions of LAGBs were measured to be 27%,75%,and 80%,while the corresponding proportions of HAGBs were 41.4%,15.2%,and 10.9%,respectively.As the number of rolling passes and the reduction rate increased,a portion of the high-angle grain boundaries(HAGBs)in the clad plate were transformed into low-angle grain boundaries(LAGBs).关键词
碳钢/不锈钢复合板/晶界取向差/拉伸变形/几何位错应力Key words
carbon steel/stainless steel composite plate/grain boundary orientation difference/tensile deform-ation/geometrically necessary dislocation stress分类
通用工业技术引用本文复制引用
吕海波,李海斌,杨建慧,王强..不锈钢复合板拉伸过程几何位错应力对晶界角的影响[J].重型机械,2025,(5):15-20,6.基金项目
国家自然科学基金资助项目(51875382) （51875382）
晋城市重点研发计划(20230109) （20230109）
忻州市重点研发计划(20240103) （20240103）
