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A model for the evaluation of hot workability of metallic materials

✍ Scribed by T. Rajagopalachary; V.V. Kutumbarao

Book ID
103958785
Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
535 KB
Volume
24
Category
Article
ISSN
0924-0136

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✦ Synopsis

Hot workability is presented from the systems point of view. Based on a polar reciprocity relationship between the stress and strain rate spaces, a measure of hot workability called hardening power index is defined. Deformation processing maps of this parameter are plotted for a titanium alloy IMI685 (Ti-6AI-5Zr-0.2Mo-0.1Si) using flow data from high temperature axial compression tests in the temperature range 800 to 1000Β°C and strain rate range 10 -3 to 102 s -I. Maps plotted at different strain values reveal the optimum processing conditions and indicate the probable occurrence of instabilities.

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✍ Y. Kawamura; T. Shibata; A. Inoue; T. Masumoto πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 640 KB

AbstractÐThe workability of the supercooled liquid in metallic glass has been examined through the extrusion of a Zr 65 Al 10 Ni 10 Cu 15 at.% bulk glassy alloy with a wide supercooled liquid region. The metallic glass exhibited superplastic-like deformation behavior at high strain rates, resulting