Comparison of Constant-Load and Constant-Stress Tensile Creep Data for an Aluminium-0.07 Percent Titanium Alloy at 250°C

Abstract

Constant-stress tensile creep data were obtained from an aluminium-0.07 per cent titanium alloy at 250°C and correlated using a power law of the form:

To obtain a better fit to the experimental data in the higher strain regions a modified time function was selected and the experimental data correlated using an equation of the form:

This equation was used to obtain theoretical constant-load curves which are compared with experimental constant-load data previously obtained from the same billet of material.