Recrystallization and Grain-Growth Behavior of a Nickel-Base Superalloy During Multi-Hit Deformation (Preprint)
AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING DIRECTORATE
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The initial breakdown behavior of Waspaloy-ingot material with course, columnar grain structure was established via isothermal hot compression of double-cone samples. Temperature 1177 degrees C, strain rate 0.1 s-l, dwell time between increments of deformation 30 or 60 seconds, and forging direction relative to the columnar structure were typical of industrial practice. Recrystallization kinetics were more rapid during multi-hit testing than monotonic testing. The recrystallization and grain-growth behavior showed a complex dependence on imposed strain, test orientation, and dwell time.
- Metallurgy and Metallography
- Manufacturing and Industrial Engineering and Control of Production Systems
- Test Facilities, Equipment and Methods