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Comparative Study of Flow Stress Modeling of Zircaloy-4 Sheets Manufactured from Different Routes

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Title Comparative Study of Flow Stress Modeling of Zircaloy-4 Sheets Manufactured from Different Routes
 
Creator Limbadri, Kanthi
Suresh, Kurra
Singh, Swadesh Kumar
 
Subject Zircaloy-4
Johnson-Cook model
Modified Zerilli-Armstrong
Modified Arrhenius
Coefficient of correlation
 
Description 788-795
Zircaloy-4 is proven to be an excellent structural material in the nuclear industry. In the present work, three types of
zircaloy-4 sheet materials are subjected to tensile tests at strain rates of 0.001s-1, 0.005s-1, 0.01s-1, and at four different
temperatures of 298K(room temperature), 348K, 423K, and 498K.The tensile stress-strain data has been used to model
the flow stress using three different constitutive models, namely the Johnson-Cook (JC) model, modified Zerilli-Armstrong
(m-ZA), and modified Arrhenius (m-Arr) model. The models' prediction capability for all the materials is compared using
the Coefficient of correlation (R), average absolute error (Δ􁈻, and the number of constants to be determined. It has resulted
that the m-Arr model has high goodness of fit with a maximum R-value is 0.9950,and the minimum Δ is1.1132% for Low
Oxygen Sheet (LOS) material. It is alsoa suitable model for the other two zircaloy-4 materials, even though more constants
are to be evaluated.
 
Date 2023-01-20T10:25:56Z
2023-01-20T10:25:56Z
2023-01
 
Type Article
 
Identifier 0971-4588 (Print); 0975-1017 (Online)
http://nopr.niscpr.res.in/handle/123456789/61230
https://doi.org/10.56042/ijems.v29i6.70299
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJEMS Vol.29(6) [December 2022]