Superplasticity: A Fundamental Investigation on Deformation Mechanism and Cavitation Phenomena.
Annual technical rept. 1 Feb 86-31 Jan 87,
CALIFORNIA UNIV DAVIS DIV OF MATERIALS SCIENCE AND ENGINEERING
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Al-Li alloy, and the mechanically alloyed IN91211 were investigated for superplasticity and enhanced plasticity. The optimum test condition for superplastic deformation, the associated grain boundary sliding and flow localization at non-optimum condition were investigated for Al-Li alloy. The enhanced plasticity at comparatively high strain rates was investigated in IN91211. The mechanical data were analyzed using the concept of threshold stress. The nature and temperature dependence of this threshold stress are being investigated more thoroughly at present. Keywords Silicon carbide whiskers Superplasticity Aluminum-Lithium alloys Mechanically alloyed systems 2124-SiC Whisker Reinforced Matrix Deformation mechanism.
- Metallurgy and Metallography