The Effect of Processing on the Hot Workability of Ti-48A1-2Nb-2Cr Alloys
- Knolls Atomic Power Laboratory (KAPL), Niskayuna, NY (United States)
The hot compression behavior and microstructure evolution of ingot metallurgy (I/M) and powder metallurgy (P/M) processed samples of the near-γ Ti-Aluminide alloy, Ti-48A1-2Nb-2Cr (at%), were determined. Three I/M conditions and two P/M conditions were examined in this study. Hot compression tests were performed in the temperature range of 1100°-1300°C at strain rates ranging from 1.67x10-1/sec to 1.67x10-4/sec. P/M materials consolidated by either hot isostatic pressing (HIP'ing) or extrusion exhibited the best hot workability in most cases. The P/M materials possessed finer, more homogenous microstructures than the I/M materials. It was also noted that improved workability was observed in materials with equiaxed microstructures without any lamellar constituents.
- Research Organization:
- Knolls Atomic Power Laboratory (KAPL), Niskayuna, NY (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC12-76SN00052
- OSTI ID:
- 766924
- Report Number(s):
- KAPL-P-000241
- Country of Publication:
- United States
- Language:
- English
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