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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/12996
Title: Role of activation energies of individual phases in two-phase range on constitutive equation of Zr–2.5Nb–0.5Cu alloy
Authors: Saxena K.K.
Jha S.K.
Pancholi V.
Chaudhari G.P.
Srivastava D.
Dey G.K.
Saibaba N.
Published in: Transactions of Nonferrous Metals Society of China (English Edition)
Abstract: Dominant phase during hot deformation in the two-phase region of Zr–2.5Nb–0.5Cu (ZNC) alloy was studied using activation energy calculation of individual phases. Thermo-mechanical compression tests were performed on a two-phase ZNC alloy in the temperature range of 700–925 °C and strain rate range of 10−2–10 s−1. Flow stress data of the single phase were extrapolated in the two-phase range to calculate flow stress data of individual phases. Activation energies of individual phases were then calculated using calculated flow stress data in the two-phase range. Comparison of activation energies revealed that α phase is the dominant phase (deformation controlling phase) in the two-phase range. Constitutive equations were also developed on the basis of the deformation temperature range (or according to phases present) using a sine-hyperbolic type constitutive equation. The statistical analysis revealed that the constitutive equation developed for a particular phase showed good agreement with the experimental results in terms of correlation coefficient (R) and average absolute relative error (AARE). © 2017 The Nonferrous Metals Society of China
Citation: Transactions of Nonferrous Metals Society of China (English Edition) (2017), 27(1): 172-183
URI: https://doi.org/10.1016/S1003-6326(17)60020-7
http://repository.iitr.ac.in/handle/123456789/12996
Issue Date: 2017
Publisher: Nonferrous Metals Society of China
Keywords: activation energy
constitutive equation
hot deformation
two-phase material
Zr–2.5Nb–0.5Cu alloy
ISSN: 10036326
Author Scopus IDs: 56612928200
56711611100
14071738800
6603871115
57196741375
7006913459
11339957900
Author Affiliations: SAXENA, K.K., Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India, Department of Mechanical Engineering, Insitute of Engineering and Technology, GLA Uinversity, Mathura, Uttar Pradesh 281406, India
JHA, S.K., Nuclear Fuel Complex Limited, Hyderabad, 501301, India
PANCHOLI, V., Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India
CHAUDHARI, G.P., Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India
SRIVASTAVA, D., Materials Science Division, Bhabha Atomic Research Center, Mumbai, 40085, India
DEY, G.K., Materials Science Division, Bhabha Atomic Research Center, Mumbai, 40085, India
SAIBABA, N., Nuclear Fuel Complex Limited, Hyderabad, 501301, India
Corresponding Author: SAXENA, K.K.email: saxena0081@gmail.com
Appears in Collections:Journal Publications [MT]

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