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个人信息Personal Information
副教授
博士生导师
硕士生导师
性别:男
毕业院校:山东大学
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:新三束实验楼209室
联系方式:0411-84709784
电子邮箱:ptli@dlut.edu.cn
电子束熔炼Inconel 740合金不同热处理状态下的组织演变与显微硬度
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发表时间:2015-01-01
发表刊物:材料工程
所属单位:材料科学与工程学院
期号:4
页面范围:19-24
ISSN号:1001-4381
摘要:Inconel 740 alloy was prepared by electron beam melting (EBM). The microstructure evolution and microhardness variation of the alloy under heat treatment conditions were investigated, the precipitation principle and distribution characteristics of phases during heat treatment process were analyzed. The results indicate that Inconel 740 alloy has a good macrostructure and lower inclusion content, the grain size is about 2mm. The microstructure is austenite with a lot of twin crystals after standard heat treatment, the M23C6 carbides are distributed continuously on the grain boundaries, with G phase and η phase. Lots of spherical and 30nm in size strengthen phase γ' precipitate in the grain. The microhardness of Inconel 740 alloy prepared by electron beam melting with standard heat treatment is about 120 HV0.1 higher than the same alloy that made through traditional method. ©, 2015, Beijing Institute of Aeronautical Materials (BIAM). All right reserved.
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