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Hot-working characteristics of a Pb-2wt\%Cd alloy during transformation
Faculty
Science
Year:
2005
Type of Publication:
Article
Pages:
357-364
Authors:
Abdel-Daiem, AM
DOI:
10.1016/j.physb.2004.11.032
Journal:
PHYSICA B-CONDENSED MATTER ELSEVIER SCIENCE BV
Volume:
355
Research Area:
Physics
ISSN
ISI:000226733300046
Keywords :
flow stress, dynamic recrystallization, strain hardening, activation energy, stress-strain, transformation
Abstract:
Stress-strain measurements were carried out on a Pb-2 wt\%Cd alloy at different strain rates from 6.4 x 10(-4) to 1.0 X 10(-2) s(-1) and in the temperature range from 433 to 503 K. The material's dynamic stress-strain response, strain rate, temperature effects and possible deformation mechanisms are discussed. The hot working parameters such as yield stress; ultimate stress, elastic modulus and the total strain were estimated as function of temperature and strain rate to evaluate the structural changes during transformation. Nevertheless, the effect of the transformation on the activation energy and the strain rate sensitivity parameter was studied. Furthermore, the microstructure of the studied samples was investigated below and above the transition temperature (0.65 T-m) using optical microscopy and X-ray analysis. (C) 2004 Elsevier B.V. All rights reserved.
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