Strain aging behavior in NiAl microalloyed with interstitial and substitutional solutes

Book · Wed Dec 31 00:00:00 EST 1997

OSTI ID:571840

Weaver, M L ^[1]; Noebe, R D ^[2]; Kaufman, M J ^[3]

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1. Florida A and M Univ., Tallahassee, FL (United States). Center for Nonlinear and Nonequilibrium Aeroscience
2. NASA-Lewis Research Center, Cleveland, OH (United States)
3. Univ. of Florida, Gainesville, FL (United States). Dept. of Materials Science and Engineering

Dynamic strain aging has been investigated in polycrystalline NiAl alloys containing combined additions of interstitial and substitutional impurities. The results indicate that strain aging can be enhanced in polycrystalline alloys containing concentrations of silicon or iron in excess of 0.15 at.% in addition to conventional levels of carbon. This co-doping leads to very dramatic strain aging events, comparable to those typically observed in single crystals. This effect will be discussed with respect to conventional theories of strain aging.

• OSTI ID: 571840
• Report Number(s): CONF-961202-; TRN: IM9806%%112
• 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

Related Subjects

36 MATERIALS SCIENCE
NICKEL ALLOYS
ALUMINIUM ALLOYS
STRAIN AGING
MECHANICAL PROPERTIES
INTERMETALLIC COMPOUNDS
EXPERIMENTAL DATA
SILICON ADDITIONS
IRON ADDITIONS
CARBON ADDITIONS
TEMPERATURE DEPENDENCE