学位：博士
职称：教授
所在单位：材料科学与工程学院
长期从事金属材料蠕变、组织演化、损伤及寿命预测工作。主持和参加国家自然科学基金重点和面上项目6项，“863”计划课题2项，省部级及企业项目20余项。获国家发明专利5项，发表学术论文200余篇。出版专著“耐热钢持久性能的统计分析及可靠性预测”1部（科学出版社），译著“高温合金”1部，编著1部。获辽宁省教学名师，宝钢教育奖优秀教师奖。辽宁省教学成果一等奖1项，国家本科一流课程、国家精品在线开放课程负责人。Emerald出版社颁发的学术奖“Literati Club Awards for Excellence”，金属学报2009-2015年度优秀论文奖。省部级科技奖励一等奖、二等奖5项。
Life prediction by ferrite-pearlite microstructural simulation of short fatigue cracks at high temperature
点击次数：
论文类型：期刊论文
发表时间：2015-11-01
发表刊物：INTERNATIONAL JOURNAL OF FATIGUE
收录刊物：SCIE、EI、Scopus
卷号：80
页面范围：349-356
ISSN号：0142-1123
关键字：High temperature; Short fatigue cracks; Life prediction; Voronoi-polygons; Microstructural simulation
摘要：This paper dealt with fatigue behavior simulation based on ferrite-pearlite microstructure modeled by correctional Voronoi-polygons. The model took grain size, grain orientation and the percentage of pearlite and ferrite into consideration. The basal energy was proposed to represent the inherent energy for slip-band and grain boundary to cracking. The driving force for crack initiation and propagation caused by load condition was considered as the energy increment of slip-band and grain boundary. The fatigue behavior including crack initiation, propagation, coalescence and interference were simulated based on Monte Carlo method. The simulation results show a satisfying agreement with the experimental ones. (C) 2015 Elsevier Ltd. All rights reserved.
发表时间：2015-11-01
