The Segregation Behaviours of Magnesium Addition in A Ni-Cr-Co Base Superalloy

Zhu Qiang; Wang Di; Chen Guoliang; Fu Jie; Xu Zhichao; Qiao Qing

doi:10.13374/j.issn1001-053x.1988.01.003

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Zhu Qiang, Wang Di, Chen Guoliang, Fu Jie, Xu Zhichao, Qiao Qing. The Segregation Behaviours of Magnesium Addition in A Ni-Cr-Co Base Superalloy[J]. Chinese Journal of Engineering, 1988, 10(1): 12-17. doi: 10.13374/j.issn1001-053x.1988.01.003

Citation:

Zhu Qiang, Wang Di, Chen Guoliang, Fu Jie, Xu Zhichao, Qiao Qing. The Segregation Behaviours of Magnesium Addition in A Ni-Cr-Co Base Superalloy[J]. Chinese Journal of Engineering, 1988, 10(1): 12-17. doi: 10.13374/j.issn1001-053x.1988.01.003

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The Segregation Behaviours of Magnesium Addition in A Ni-Cr-Co Base Superalloy

doi: 10.13374/j.issn1001-053x.1988.01.003

Received Date: 1987-04-04
Available Online: 2021-11-15

Abstract

Abstract

The segregation behaviours of Mg addition in a Ni-Cr-Co base superalloy have been investigated. Both AES and EDS analysis on TEM thin film mold are used for measuring the segregation behaviours of Mg.
The results show that the equilibrium segregation of Mg in grain boundaries is taken place; the rate of the Mg segregation to grain boundaries is the fastest near 900℃. These have close interrelation with the segregation kinetics and thermodynamics and the carbides M₆C in grain boundaries. In addition, the distribution of Mg in grain boundaries is inhomogeneous, which the increase with increasing of ageing time.
Theuresults measured with AES and EDS analysis on TEM thin film mold are similar.
- superalloy,
- magnesium,
- segregation