Deformation and failure modes under compressive loading in lamellar TiAl

Book · Sat Jul 01 00:00:00 EDT 1995

OSTI ID:72513

Dao, M; Kad, B K; Asaro, R J ^[1]

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1. Univ. of California, San Diego, La Jolla, CA (United States). Dept. of Applied Mechanics and Engineering Sciences

A physically based micromechanical model is applied to study finite compressive deformation and failure in lamellar TiAl microstructures. Orientation dependent yielding of lamellar TiAl single crystals is specifically modeled. Finite element computations show that deformation is inherently non-uniform in the lamellar microstructure. Intergranular fracture (at low strains) and internal buckling (at high strains) are found to be two of the most important failure modes.

• OSTI ID: 72513
• Report Number(s): CONF-941144-; ISBN 1-55899-265-0; TRN: IM9530%%125
• 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

Related Subjects

36 MATERIALS SCIENCE
TITANIUM ALLOYS
DEFORMATION
FAILURES
ALUMINIUM ALLOYS
THEORETICAL DATA
INTERMETALLIC COMPOUNDS
MATHEMATICAL MODELS
COMPRESSION STRENGTH
MONOCRYSTALS