Title

Effect of strain rate and test temperature on superplasticity of a Zr-2.5 wt% Nb alloy

Authors

Authors

S. V. Shukla; C. Chandrashekharayya; R. N. Singh; R. Fotedar; R. Kishore; T. K. Sinha;B. P. Kashyap

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

J. Nucl. Mater.

Keywords

GRAIN-GROWTH; BEHAVIOR; DEFORMATION; CAVITATION; FLOW; Materials Science, Multidisciplinary; Nuclear Science & Technology; Mining & Mineral Processing

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 Elsevier Science B.V. All rights reserved.

Journal Title

Journal of Nuclear Materials

Volume

273

Issue/Number

2

Publication Date

1-1-1999

Document Type

Article

DOI Link

http://dx.doi.org/10.1016/s0022-3115(99)00037-9

Language

English

First Page

130

Last Page

138

WOS Identifier

WOS:000080812600002

ISSN

0022-3115

Recommended Citation

"Effect of strain rate and test temperature on superplasticity of a Zr-2.5 wt% Nb alloy" (1999). Faculty Bibliography 1990s. 2854.
https://stars.library.ucf.edu/facultybib1990/2854