Superplasticity in a nickel silicide alloy: Microstructural and mechanical correlations

Conference · Mon Dec 31 23:00:00 EST 1990

OSTI ID:5126356

Stoner, S L ^[1]; Oliver, W C ^[2]; Mukherjee, A K ^[3]

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1. Lawrence Livermore National Lab., CA (United States)
2. Oak Ridge National Lab., TN (United States)
3. California Univ., Davis, CA (United States). Dept. of Mechanical, Aeronautical and Materials Engineering

The superplastic properties of a nickel silicide based intermetallic alloy have been investigated as a function of strain, strain-rate, and temperature. The evolution of the microstructure during superplasticity, including grain growth, grain refinement, and cavitation, is reviewed. The relationship of the flow stress to strain and to strain-rate and the activation energy of the deformation process have been established. Finally, deformation mechanisms for superplasticity in the alloy at intermediate and high strain-rates are proposed. 6 refs., 8 figs.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48; AC05-84OR21400
• OSTI ID: 5126356
• Report Number(s): UCRL-108170; CONF-910938--5; ON: DE92002160
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CRYSTAL STRUCTURE
INTERMETALLIC COMPOUNDS
MECHANICAL PROPERTIES
MICROSTRUCTURE
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NICKEL COMPOUNDS
NICKEL SILICIDES
PLASTICITY
SILICIDES
SILICON ALLOYS
SILICON COMPOUNDS
STRAIN RATE
TRANSITION ELEMENT COMPOUNDS
VANADIUM ALLOYS