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Creep Deformation Behavior of a Novel Precipitate-Hardened Ni-Fe-Base Superalloy at 750 °C
Metallurgical and Materials Transactions A ( IF 1.985 ) Pub Date : 2020-01-06 , DOI: 10.1007/s11661-019-05611-4
P. Zhang, Y. Yuan, Y. F. Gu, Y. Y. Dang, J. B. Yan, J. T. Lu, J. C. Wang

Abstract The creep deformation behavior of a novel precipitate-hardened Ni-Fe-base superalloy in solutionized and aged states is investigated at 750 °C/80 to 120 MPa. We found that as creep deformation proceeds, creep curves of specimens in the two states either overlap or are parallel to each other. This study provides a new strategy to design the heat treatment scheme to achieve a good compromise between the strength and fabricability of superalloys for 700 °C-class advanced ultra-supercritical power plants.
更新日期:2020-02-03

 

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