Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/14743
Title: Recrystallization of the hot isostatic pressed nickel-base superalloy FGH4096. II : characterization and application
Authors: Ning, Y
Fu, MW 
Yao, W
Keywords: Gradient temperature heat treatment
Microstructure characterization
Nickel-base superalloy
Recrystallization
Issue Date: 2012
Publisher: Elsevier
Source: Materials science and engineering. A, Structural materials : properties, microstructure and processing, 2012, v. 539, p. 101-106 How to cite?
Journal: Materials science and engineering. A, Structural materials : properties, microstructure and processing 
Abstract: Recrystallization of the hot isostatic pressed nickel-base superalloy FGH4096 undergoes three characteristic periods, viz., incubation, nucleation and growth. Working temperature has a great effect on its boundary migration and nucleation. In recrystallization process, the nucleation rate is obviously accelerated with the increasing working temperature. To obtain fine grains, hot working should be carried out at the temperature of 1050-1080. °C. After two passes multiple forging, the grain size is significantly refined from 30.0 to 2.2. μm, and the refinement mechanism is found to be the repeated dynamic recrystallization (DRX) in the multiple forging process. Equiaxed-flatted gradient microstructure is obtained via the gradient temperature heat treatment (GTHT).
URI: http://hdl.handle.net/10397/14743
ISSN: 0921-5093
EISSN: 1873-4936
DOI: 10.1016/j.msea.2012.01.065
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