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。
Microstructural evolution and change in hardness during creep of NF709 austenitic stainless steel
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论文类型：期刊论文
发表时间：2011-06-01
发表刊物：ACTA METALLURGICA SINICA-ENGLISH LETTERS
收录刊物：Scopus、SCIE、EI、CSCD
卷号：24
期号：3
页面范围：220-224
ISSN号：1006-7191
关键字：NF709; Creep-introduced; Hardness; Microstructural evolution
摘要：Microstructural evolution and the change in hardness during creep deformation of NF709 austenitic stainless steel were investigated. Creep tests were carried out at 650 degrees C for 2932 h under a load of 210 MPa for comparison with aging specimen at 650 degrees C for 3000 h. The hardness results indicated that applied stress during creep process induced hardness increase. Analysis of longitudinal section microstructure showed that the creep damage caused by pores and the grain boundary hardening caused by elongated grains could be the factors leading to hardness differences. The G phase dispersedly precipitated in intragranular and interacted with dislocations during creep process, indicating strain hardening.
发表时间：2011-06-01
