个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 辽宁省高校重点实验室主任
性别:男
毕业院校:日本国名古屋大学
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
联系方式:0411-84708940
电子邮箱:tjuli@dlut.edu.cn
Grain refinement of superalloy IN100 under the action of rotary magnetic, fields and inoculants
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论文类型:期刊论文
发表时间:2008-04-15
发表刊物:MATERIALS LETTERS
收录刊物:SCIE、EI
卷号:62
期号:10-11
页面范围:1585-1588
ISSN号:0167-577X
关键字:superalloy; rotary magnetic field; inoculant; casting; crystal structure
摘要:The crystal structures of superalloy IN100 ingots under the action of rotary magnetic fields and inoculants were studied with the X-ray diffractometer and the optical microscope. The results indicate that the application of rotary magnetic fields and inoculants can refine the grain of gamma matrix and increase the fraction of equiaxed grains. By initiating the 50 Hz and 150 A reversible electromagnetic stirring as soon as the molten metal was poured into the mould, which was coated with inoculant CoAl2O4, the average equiaxed grain size of IN100 superalloy ingots can be refined to 95 mu m and the fraction of equiaxed grains can be increased to 100%. The mechanisms of the grain refinement and the increment in the equiaxed fraction were proposed. The effect of the inoculant on the crystal structures of superalloy IN100 ingots was studied. (c) 2007 Elsevier B.V. All rights reserved.