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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/6541

Title: Effect of strain rate and test temperature on superplasticity of a Zr-2.5 wt% Nb alloy
Authors: SHUKLA, SV
CHANDRASHEKHARAYYA, C
SINGH, RN
FOTEDAR, R
KISHORE, R
SINHA, TK
KASHYAP, BP
Keywords: grain-growth
behavior
deformation
cavitation
flow
Issue Date: 1999
Publisher: ELSEVIER SCIENCE BV
Citation: JOURNAL OF NUCLEAR MATERIALS, 273(2), 130-138
Abstract: Tensile specimens of a Zr-2.5 wt% Nb pressure tube alloy were deformed at strain rates ((epsilon) over dot) of 3.2 x 10(-4)-2.9 x 10(-2) s(-1) and test temperatures (T) of 625-800 degrees C to investigate the nature of stress-strain curves and the optimum condition for superplasticity. The maximum ductility of 1384%;, was obtained at T=700 degrees C and intermediate strain rate of 3.4 x 10(-3) s(-1). The stress-strain curves were found to exhibit the dominance of flow hardening, especially in the early part of deformation, followed by how softening. The variation inductility and flow stress as a function of test condition is explained by the observed microstructural evolution and fracture behavior. (C) 1999 .
URI: http://dx.doi.org/10.1016/S0022-3115(99)00037-9
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6541
http://hdl.handle.net/10054/6541
ISSN: 0022-3115
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