Alloying effect of vanadium upon structure and strength of {delta}-phase titanium trialuminide
- Tokyo Univ. of Agriculture and Technology, Koganei, Tokyo (Japan). Dept. of Mechanical Systems Engineering
Titanium trialuminide intermetallic compound Al{sub 3}Ti, is characterized by its low density and its high oxidation resistance. Such properties are potentially useful in light-weight and heat-resistant structures for aerospace applications. Here, the allying effect of vanadium upon {delta}-phase titanium trialuminide has been investigated using materials whose compositions were of the type Al{sub 3}(Ti,V). Six types of ternary aluminum-titanium-vanadium alloys, ranging from Al{sub 3}Ti to Al{sub 3}V at 5 atomic % intervals, have been prepared by arc melting. All the materials showed the DO{sub 22} tetragonal structure, suggesting vanadium atoms substitute titanium atoms. The 0.2% proof stress increased with increasing vanadium content up to about 10 atomic %, and then decreased toward that of Al{sub 3}V both at room temperature and at elevated temperatures. Such behavior can be interpreted as substitutional solid solution strengthening.
- OSTI ID:
- 571712
- Report Number(s):
- CONF-961202-; TRN: IM9806%%52
- Resource Relation:
- Conference: 1996 Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 2-6 Dec 1996; Other Information: PBD: 1997; Related Information: Is Part Of High-temperature ordered intermetallic alloys VII; Koch, C.C. [ed.] [North Carolina State Univ., Raleigh, NC (United States)]; Liu, C.T. [ed.] [Oak Ridge National Lab., TN (United States)]; Stoloff, N.S. [ed.] [Rensselaer Polytechnic Inst., Troy, NY (United States)]; Wanner, A. [ed.] [Univ. Stuttgart (Germany)]; PB: 799 p.; Materials Research Society symposium proceedings, Volume 460
- Country of Publication:
- United States
- Language:
- English
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