Characteristics of a multicomponent Nb-Ti-Al alloy via industrial-scale practice
- Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.
- Reference Metals Co., Inc., Bridgeville, PA (United States)
Within the spectrum of advanced intermetallic materials, an alloy containing 44Nb-35Ti-6Al-5Cr-8V-1W-0.5Mo-0.3Hf (at. %) was investigated in the industrial-scale produced condition. The alloy was tensile tested in air from room temperature to 1,000 C and in vacuum at 750 and 850 C. Results of this study have shown that the alloy can be commercially produced and has adequate ductility for its secondary processing even at an oxygen level of 1,160 wppm. The alloy has room temperature ductility of 16% and superplastic elongation of 244% at 1,000 C. This alloy shows low intermediate temperature (600--850 C) ductility when tested in air. The vacuum testing revealed that the low ductility is associated within oxygen embrittlement phenomenon. It is expected that such an embrittlement can be taken care of by an oxidation resistant coating. The alloy also possesses superior strength to similar alloys in this class. Results of this investigation suggest a strong potential for consideration of this alloy to exceed the useful temperature range of nickel-base superalloys.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-96OR22464
- OSTI ID:
- 474923
- Report Number(s):
- CONF-970455-2; ON: DE97006001; TRN: AHC29711%%93
- Resource Relation:
- Conference: 4. international conference on high-temperature intermetallics, San Diego, CA (United States), 27 Apr - 1 May 1997; Other Information: PBD: [1997]
- Country of Publication:
- United States
- Language:
- English
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