周文龙

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:大连理工大学

学位:博士

所在单位:材料科学与工程学院

学科:材料加工工程

办公地点:知远楼,B535室

联系方式:wlzhou@dlut.edu.cn

电子邮箱:wlzhou@dlut.edu.cn

扫描关注

论文成果

当前位置: 大连理工大学周文龙 >> 科学研究 >> 论文成果

Effect of Nb on delta Phase Precipitation and the Tensile Properties in Cast Alloy IN625

点击次数:

论文类型:期刊论文

发表时间:2018-02-01

发表刊物:METALS

收录刊物:SCIE

卷号:8

期号:2

ISSN号:2075-4701

关键字:delta phase precipitation; element Nb; tensile properties; cast alloy IN625

摘要:Cast alloy IN625 is a candidate Ni-base alloy for advanced ultra-supercritical (A-USC) power plants. The aim of this study was to investigate the influences of Nb on delta phase precipitation and the tensile properties in this alloy. The results show that the delta phase is easy to precipitate after long-term aging at 700 degrees C (the service temperature of A-USC power plants) and it is strongly affected by the content of Nb in the alloy. The strength of alloys after aging at 700 degrees C for 10,000 h increases with the increasing Nb content and also increases sharply when compared to that of as-heat-treated alloys. The increase in strength is found to be primarily associated with the precipitation of the delta phase.