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个人信息Personal Information
教授
博士生导师
硕士生导师
性别：男
毕业院校：埼玉大学
学位：博士
所在单位：材料科学与工程学院
学科：材料学. 材料加工工程
办公地点：材料馆304室
联系方式：辽宁省大连市甘井子区凌工路2号 大连理工大学 材料科学与工程学院 116024 办公电话0411-84708189 手机13149898722
电子邮箱：minxiaohua@dlut.edu.cn
Misorientation dependence of grain boundary migration in advanced ultra-supercritical Ni-based superalloy
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论文类型：期刊论文
发表时间：2018-01-01
发表刊物：MATERIALS SCIENCE AND TECHNOLOGY
收录刊物：SCIE、EI
卷号：34
期号：5
页面范围：607-611
ISSN号：0267-0836
关键字：Creep; deformation; Ni-based superalloy; advance ultra-supercritical; microstructure
摘要：The microstructures of a Ni-based superalloy used in the advanced ultra-supercritical condition were investigated after creep deformation. The grain boundary migrated during tertiary creep. Accompanied by the migration of grain boundaries, the coarsened gamma' phase with rodlike shape was formed and the precipitate-free zones emerged around this coarsened gamma'. The distributional misorientation angle of these grain boundaries was from 45 degrees to 65 degrees. After the examination of the distribution characteristics of the cracks, it was found that the intergranular cracks did not propagate through the precipitate-free zones with the coarsened gamma'.