Microsegregation and homogenization of GH105 superalloy ingots

MEI Sheng-yong; ZHENG Lei; MENG Zhao-bin; ZHANG Mai-cang; DONG Jian-xin

doi:10.13374/j.issn1001-053x.2009.06.006

Volume 31 Issue 6

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Article Navigation > Chinese Journal of Engineering > 2009 > 31(6): 714-718

MEI Sheng-yong, ZHENG Lei, MENG Zhao-bin, ZHANG Mai-cang, DONG Jian-xin. Microsegregation and homogenization of GH105 superalloy ingots[J]. Chinese Journal of Engineering, 2009, 31(6): 714-718. doi: 10.13374/j.issn1001-053x.2009.06.006

Citation:

MEI Sheng-yong, ZHENG Lei, MENG Zhao-bin, ZHANG Mai-cang, DONG Jian-xin. Microsegregation and homogenization of GH105 superalloy ingots[J]. Chinese Journal of Engineering, 2009, 31(6): 714-718. doi: 10.13374/j.issn1001-053x.2009.06.006

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Microsegregation and homogenization of GH105 superalloy ingots

doi: 10.13374/j.issn1001-053x.2009.06.006

1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. High Temperature Materials Research Institute, Central Iron and Steel Research Institute, Beijing 100081, China

Received Date: 2008-06-20
Available Online: 2021-08-09

Abstract

Abstract

Microsegregation and homogenization of superalloy GH105 ingots were studied by optical microscope, scanning electron microscopy and EDAX. The results show that the severe segregated elements are Ti and Mo, and the segregation degree can be reduced by a two-stage heat-treatment of homogenization. The homogenization process can be effectively predicted by the homogenizing equation, which agrees with experimental results as a whole, while there are some errors between experimental results and those predicted by the residual segregation parameter model.
- GH105 superalloy,
- microstructure,
- segregation,
- homogenization