Plasticity, dislocation structures and antiphase boundary energies in Fe{sub 3}Al single crystals with chromium

Book · Wed Dec 31 00:00:00 EST 1997

OSTI ID:571785

Kral, F; Schwander, P; Kostorz, G ^[1]

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1. ETH Zuerich (Switzerland). Inst. fuer Angewandte Physik

The influence of Cr additions on the positive temperature dependence of the critical resolved shear stress of Fe{sub 3}Al is investigated. Single crystals of binary Fe-28 at.% Al and ternary Fe-28 at.% Al-6 at.%Cr with different orientations are deformed in uniaxial compression between room temperature and 1,273 K. The dislocation arrangement and the dissociation of superdislocations are studied by transmission electron microscopy using the weak-beam technique. The operative slip systems are discussed on the basis of the direct measurements of the antiphase boundary energies and of the activation volume.

• OSTI ID: 571785
• Report Number(s): CONF-961202-; TRN: IM9806%%88
• 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
SHEAR PROPERTIES
DISLOCATIONS
IRON BASE ALLOYS
ALUMINIUM ALLOYS
INTERMETALLIC COMPOUNDS
EXPERIMENTAL DATA
CHROMIUM ADDITIONS
METALLURGICAL EFFECTS
TEMPERATURE DEPENDENCE
DEFORMATION