Title

Effect Of Strain Rate And Test Temperature On Superplasticity Of A Zr-2.5 Wt% Nb Alloy

Abstract

Tensile specimens of a Zr-2.5 wt% Nb pressure tube alloy were deformed at strain rates (ε) of 3.2×10-4-2.9×10-2 s-1 and test temperatures (T) of 625-800 °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°C and intermediate strain rate of 3.4×10-3 s-1. The stress-strain curves were found to exhibit the dominance of flow hardening, especially in the early part of deformation, followed by flow softening. The variation in ductility and flow stress as a function of test condition is explained by the observed microstructural evolution and fracture behavior.

Publication Date

1-1-1999

Publication Title

Journal of Nuclear Materials

Volume

273

Issue

2

Number of Pages

130-138

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/S0022-3115(99)00037-9

Socpus ID

0032653148 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0032653148

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