The hot deformation of c83600 tin bronze alloy based on Arrhenius constitutive models

Abstract

For a further study on the hot deformation behaviors of C83600 Tin Bronze alloy under the elevated temperatures, the real stress-strain curve of C83600 Tin Bronze alloy in isothermal compression test were obtained under the conditions of deformation temperature of 873, 973K, 1073K, strain rate of 0.001, 0.01, 0.1, 1s -1 and deformation of 50%., the temperature range of 873-1073 K and strain rate range of 0.001-1s -1 by the Gleeble-3500 thermo mechanical simulator, constitutive equations were established to describe the high-temperature flow stress of this alloy based on modified Arrhenius-Type constitutive model,respectively. Meanwhile, the predictability of the obtained models was assessed by correlation coefficients (R) and root mean square error (RMSE), where the values R were computed to be 0.99326, and the values of RMSE were calculated to be 5.1898 for modified Arrhenius-Type constitutive model, respe.ctively. Moreover,the comparison of the experimental and predicted flow stresses in the strain range of 0.05−0.6 further indicated that the obtained modified Arrhenius-Type model possessed better predictability on hot deformation behavior of C83600 Tin Bronze alloy.