Abstract
Abstract Constitutive analysis for elevated temperature flow behavior of BFe10-1-2 alloy was carried out by using experimental stress–strain data from isothermal hot compression tests on a Gleeble-3800 thermo-mechanical simulator, in a wide of temperature range of 1,023–1,273 K, and strain rate range of 0.001–10 s−1. A constitutive equation based on double multiple nonlinear regression (DMNR) was proposed considering the independent effects of strain, strain rate, temperature and their interrelation. The predicted flow stress data obtained from the developed equation based on DMNR was compared with the experimental data. Correlation coefficient (R), average absolute relative error (AARE) and relative errors were introduced to verify the validity of the developed constitutive equation. The results showed that the developed constitutive equation based on DMNR could predict flow stress of BFe10-1-2 alloy with good correlation and generalization.
Highlights
As a typical Cu–Ni alloy, BFe10-1-2 cupronickel alloy has been widely employed as cooling-condition material in shipping and seawater desalted industry due to its attractive combinations of characteristics in terms of excellentFor the past few years, several empirical, semiempirical, phenomenological and physically based constitutive models have been proposed
The main purpose of this study is to find out the suitable constitutive equation to predict the elevated temperature flow behavior of BFe10-1-2 cupronickel alloy with considering the combined effect of strain, strain rate and deformation temperature
It can be seen that deformation temperature and strain rate have obvious influence on flow stress curves
Summary
As a typical Cu–Ni alloy, BFe10-1-2 cupronickel alloy has been widely employed as cooling-condition material in shipping and seawater desalted industry due to its attractive combinations of characteristics in terms of excellentFor the past few years, several empirical, semiempirical, phenomenological and physically based constitutive models have been proposed. The results showed that the developed constitutive equation based on DMNR could predict flow stress of BFe10-1-2 alloy with good correlation and generalization. The main purpose of this study is to find out the suitable constitutive equation to predict the elevated temperature flow behavior of BFe10-1-2 cupronickel alloy with considering the combined effect of strain, strain rate and deformation temperature.
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