Open AccessHigh-temperature and room-temperature compression deformation behavior comparing of GH4169 Alloy
Author(s) -
Y W Zhang,
Xu Lu,
SU Xi-kong,
Bo Wen,
Jin Hui Du
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1777/1/012068
Subject(s) - materials science , deformation (meteorology) , strain rate , atmospheric temperature range , superalloy , alloy , dynamic recrystallization , compression (physics) , composite material , metallurgy , strain (injury) , hot working , thermodynamics , medicine , physics
The hot deformation characteristics of a Ni-Fe based superalloy (GH4169) were studied in the temperature range 900-1020 °C and strain rate range 0.001-0.1 s −1 using hot compression tests. The cold deformation characteristics of the alloy were studied at room-temperature and strain rates of 0.1-1.0 s −1 using room-temperature compression tests. A hot deformation equation is given to characterize the dependence of peak stress with temperature and strain rate. A cold deformation equation is given to characterize the dependence of peak stress. Comparing the results of the high-temperature and room-temperature deformations of the GH4169 alloy indicated that hot deformation is sensitive to both temperature and strain rate, while the cold deformation is sensitive to strain. At room-temperature deformation conditions, for true strain ≈0.2, the dynamic recrystallization nucleates and grains refine.