A comparative study of short range order in Fe-Cr and Fe-V alloys around equiatomic composition

Conference · Tue Dec 04 00:00:00 EST 1990

OSTI ID:6281869

Turchi, P E.A.; Sluiter, M ^[1]; Stocks, G M ^[2]

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1. Lawrence Livermore National Lab., CA (USA)
2. Oak Ridge National Lab., TN (USA)

Configurational energies have been calculated for equiatomic Fe-Cr and Fe-V alloys possessing the high temperature bcc crystalline structure, within a first principles electronic band structure approach. In agreement with experimental facts, a tendency towards order, with a B2 ordered structure of CsCl type, is found for FeV whereas phase separation characterized FeCr. These results suggest that the nature of short range order in the high temperature bcc solid solution is not the primary driving force for describing the structural transformation from bcc to sigma which takes place in both alloys upon decreasing temperature. 15 refs., 9 figs., 1 tab.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: W-7405-ENG-48; AC05-84OR21400
• OSTI ID: 6281869
• Report Number(s): UCRL-JC-104590; CONF-901105-39; ON: DE91005230; TRN: 91-001560
• Resource Relation: Conference: Fall meeting of the Materials Research Society, Boston, MA (USA), 24 Nov - 1 Dec 1990
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
IRON BASE ALLOYS
CRYSTAL-PHASE TRANSFORMATIONS
CHROMIUM ALLOYS
COMPARATIVE EVALUATIONS
CRYSTAL STRUCTURE
ELECTRONIC STRUCTURE
TRANSITION TEMPERATURE
VANADIUM ALLOYS
ALLOYS
IRON ALLOYS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
360102* - Metals & Alloys- Structure & Phase Studies