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。
Room temperature creep and its influence on fatigue crack growth in a X70 steel
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论文类型：期刊论文
发表时间：2007-05-01
发表刊物：Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research
收录刊物：EI、PKU、ISTIC
卷号：21
期号：SUPPL.
页面范围：91-94
ISSN号：10053093
摘要：Fatigue crack propagation tests with room temperature creep and single wave overload have been performed under constant stress intensity factor range, in a X70 pipeline steel by using Compact tension specimens. When the stress intensity factor used in creep tests is higher than the maximal stress intensity factor, time-dependent deformation at crack tip was observed. In addition, the higher overload ratio the more room temperature creep deformation. Similar to the single wave overload, creep strain can also induce subsequent fatigue crack growth retardation, however it is more serious. Crack closure is detected to analysis the underlying retardation mechanisms.
发表时间：2007-05-01
