Damage evolution of metallic materials during high temperature plastic deformation

来源期刊：中国有色金属学报(英文版)2002年第3期

论文作者：汪凌云 刘雪峰 汤爱涛 黄光杰

文章页码：379 - 382

Key words：damage mechanics; Zener-Hollomon parameter; damage variable

Abstract: The damage evolution of high temperature plastic deformation of metallic materials was studied by use of continuum damage mechanics (CDM) theory. Based on thermodynamics, on a damage variable D and Zener-Hollomon parameter Z, and on the effective stress concept, a damage evolution model of high temperature plastic deformation was derived and was used to analyze the damage evolution of 1420 Al-Li alloy during high temperature plastic deformation. The model that is verified by tests can also be applied to the materials that are loaded prorata or out of proportion during high temperature plastic deformation. It extends the applied scope of damage mechanics.