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。
The effect of thermal aging on tensile property of HR3C steel
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论文类型：会议论文
发表时间：2009-01-01
收录刊物：CPCI-S
页面范围：343-346
关键字：HR3C; High-temperature mechanical properties; High temperature short time tensile test; Aging
摘要：HR3C (25Cr-20Ni-Nb-N) is a new austenitic steel used as superheat and reheater tubes in Ultra-supercritical Boiler. The purpose of this paper is to research the steel's high-temperature mechanical properties and the effects of precipitates after thermal aging by the high temperature short time tensile. The experimental materials were supply state specimens and thermal aging specimens. The experiment temperatures were 650 degrees C and 750 degrees C. The results showed that the yield strengths of thermal aging HR3C Were superior to the supply state specimens. The optical microstructure of thermal aging specimen showed that there were numerous precipitates along the intergranulars and in the intracrystallines. It indicated that these precipitations increased yield strength of the thermal aging specimen. There was an interesting result obtained from the stress-strain curves only considering the temperature influence. The supply state specimen has preferable plasticity at the lower temperature. This abnormal phenomenon was resulted in precipitates along the grain boundaries when this state specimen was tested at higher temperature.
发表时间：2009-01-01
