New Titanium Alloys for Blended Elemental Powder Processing
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Six powder metallurgy titanium alloys based on commercial compositions were prepared using blended elemental titanium sponge and master alloy powders. The compositions were Ti-6Al-4V; Ti-6Al-4V + 0.5 Fe; Ti-6Al-4V + 0.5 Ni; Ti-6Al-6V-2Zr + 1Fe + 1Cu; Ti-6Al-6Zr-6Mo; and Ti-10V-2Fe-3Al. The powders were cold isostatically pressed at 400 MPa and sintered at 1238°C for 4 hours. The as-sintered samples had ~94 pct of the theoretical density, uniaxial yield strengths from 710 to 880 MPa and reductions in area from 0.5 to 8 pct. After a subsequent hot isostatic pressing cycle of 900°C and 100 MPa for 2 hr., the samples had ~99 pct of the theoretical density, yield strengths from 840 to 1035 MPa and reductions in area from 5 to 15 pct. These properties of fully-dense P/M material are competitive with those of cast alloys, and in some cases meet or exceed minimum specified properties of wrought ingot metallurgy processed material.
- Research Organization:
- Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- DOE Contract Number:
- AC04-94AL85000; AC04-76DP00789
- OSTI ID:
- 1545826
- Report Number(s):
- SAND--81-8682; 43659
- Country of Publication:
- United States
- Language:
- English
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