An analysis of creep deformation parameters. Part 3: numerical evaluation

A numerical study was conducted to evaluate some creep deformation parameter forms. These forms, which have been developed in Part 1, include both the C∗ parameter and ETM δ5 based parameter. They use a separated format that is being verified both experimentally and numerically. The experimental part of the study, Part 2, was conducted with a Mg alloy, AZ31, using notched fracture mechanics specimens. The same material and geometry is being used for this numerical study. merical results show that the separated form of the equation appears to be validated. The results were further used to look at the relationships between the various creep deformation parameters. These results show that the C∗ parameter and δ5 rate are related in ways that make it easy to evaluate one from the other.