Mechanical properties and structure of cubic (Al,Cr){sub 3}Ti alloys

Book · Sat Jul 01 00:00:00 EDT 1995

OSTI ID:72539

Nic, J P; Mikkola, D E ^[1]

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1. Michigan Technological Univ., Houghton, MI (United States). Dept. of Metallurgical and Materials Engineering

Single phase L1{sub 2} (Al,Cr){sub 3}Ti alloys show no anomalous strengthening at intermediate temperatures, but the strength rises rapidly at low temperatures. It is likely that a transition from SISF to APB superdislocation dissociation occurs with increasing temperature based on the more rapid decrease in APB energy compared to SISF energy because of entropy considerations. High strain hardening rates are suggested to arise in large part from the formation of large numbers of dipoles. Calculations of interaction forces illustrate the complexity of superdislocation interactions and provide a reasonable mechanism for initiating cross slip.

• OSTI ID: 72539
• Report Number(s): CONF-941144-; ISBN 1-55899-265-0; TRN: IM9530%%151
• 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
ALUMINIUM BASE ALLOYS
CRYSTAL STRUCTURE
MECHANICAL PROPERTIES
CHROMIUM ALLOYS
TITANIUM ALLOYS
INTERMETALLIC COMPOUNDS
EXPERIMENTAL DATA
STACKING FAULTS
DISLOCATIONS
YIELD STRENGTH
SLIP