Characterization of Hot Deformation Behavior of Udimet720Li Superalloy Using Processing Map

Jian Guo Wang; Dong Liu; Tao Wang; Yan Hui Yang

doi:10.4028/www.scientific.net/AMR.887-888.1161

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 887-888Characterization of Hot Deformation Behavior of...

Characterization of Hot Deformation Behavior of Udimet720Li Superalloy Using Processing Map

Abstract:

The deformation behavior of a Udimet720Li superalloy under hot compression tests was characterized in the temperature range of 1060~1160°C and strain rate range of 0.001~20s^-1. Processing maps were conducted at a series of strains to calculate the efficiency of hot working and to recognize the instability regions of the flow behavior. A Zener-Hollomon parameter is given to characterize the dependence of peak stress on temperature and strain rate. The efficiency of power dissipation of the Udimet720Li superalloy obtained in a strain range of 0.1~0.7 are essentially similar, which indicates that strain does not have a significant influence and the instability region shown in high strain and high strain rates at all temperatures. The regions for the full recrystallization can be divided by the dissolution beginning temperature of primary γ'which are the optimum hot working parameters.

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Periodical:

Advanced Materials Research (Volumes 887-888)

Pages:

1161-1168

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.887-888.1161

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Online since:

February 2014

Authors:

Jian Guo Wang*, Dong Liu, Tao Wang, Yan Hui Yang

Keywords:

Hot Compressive Deformation, Microstructure, Processing Map, Udimet720Li Superalloy

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