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Improvement of Thermal Fatigue Resistance of A Wrought Nickel-Base Superalloy by Laserglaze

Published online by Cambridge University Press:  25 February 2011

Zhao Qi ,
Ge Yunlong ,
Hu Zhuangqi ,
Jiang Ming  and
Shih Changshu
Zhao Qi
Affiliation:
Institute of Metal Research, Academia Sinica, Shenyang, Liaoning, China
Ge Yunlong
Affiliation:
Institute of Metal Research, Academia Sinica, Shenyang, Liaoning, China
Hu Zhuangqi
Affiliation:
Institute of Metal Research, Academia Sinica, Shenyang, Liaoning, China
Jiang Ming
Affiliation:
Institute of Metal Research, Academia Sinica, Shenyang, Liaoning, China
Shih Changshu
Affiliation:
Institute of Metal Research, Academia Sinica, Shenyang, Liaoning, China
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Abstract

Laserglaze with appropriate post heat treatment has improved the thermal fatigue resistance of a wrought nickel-base superalloy. It was found that laserglaze was able to eliminate the blocky MC phase, refine grains and form a very interesting microstructure of serrated grain boundaries. Careful selection of post heat treatment markedly increased the strength in the laser irradiated region. The initiation and propagation of thermal fatigue cracks were suppressed by this novel microstructure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 58 , 1985 , 415
Copyright
Copyright © Materials Research Society 1986

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References

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