Microstructure and mechanical properties of the L1{sub 2}/L2{sub 1} two-phase alloys in the quaternary Co-Al-Ni-Ti system
- Tokyo Inst. of Technology, Yokohama (Japan)
An attempt is made to develop a two-phase alloy consisting of the L1{sub 2} and L2{sub 1}(Heusler) phases in the Co-Al-Ni-Ti quaternary system exhibiting a high elevated temperature strength as well as some room temperature ductility as a new class of heat resisting structural materials. The idea behind this approach is expectations for the L2{sub 1} phase to provide high elevated temperature strength, whereas the L1{sub 2} phase provides some room temperature ductility. Compositional optimization in the room temperature ductility of the L1{sub 2} (Co,Ni){sub 3}(Al,Ti) is first carried out and then, based on the result, several L1{sub 2}/L2{sub 1} two phase alloys are designed. It is found that a few to several per cent room temperature bend ductility is obtained in such two-phase alloys.
- OSTI ID:
- 72562
- Report Number(s):
- CONF-941144-; ISBN 1-55899-265-0; TRN: IM9530%%174
- Resource Relation:
- Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 28 Nov - 9 Dec 1994; Other Information: PBD: 1995; Related Information: Is Part Of High-temperature ordered intermetallic alloys VI: Part 2. Materials Research Society symposium proceedings Volume 364; Horton, J. [ed.] [Oak Ridge National Lab., Oak Ridge, TN (United States)]; Baker, I. [ed.] [Dartmouth College, Hanover, NH (United States)]; Hanada, Shuji [ed.] [Tohoku Univ., Sendai (Japan)]; Noebe, R.D. [ed.] [NASA Lewis Research Center, Cleveland, OH (United States)]; Schwartz, D.S. [ed.] [McDonnell Douglas Aerospace, St. Louis, MO (United States)]; PB: 760 p.
- Country of Publication:
- United States
- Language:
- English
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