The Temperature Dependence of Creep and Relaxation Behavior of Structural Metals: A Micromechanical Study of the Macroscopic Response

本研究的目的是发展一种理论 温度对时间相关蠕变影响的模型 结构材料的变形。 理论模型将 包括结合变形的微观力学方面， 用连续介质力学公式 计划在 在可能的情况下用实验验证模型。 温度范围 本研究所涵盖的温度范围将从室温延伸到高于 材料熔点的一半。 将特别强调 考虑温度和应力的综合影响。 后 微观力学模型的开发和验证，宏观 模型，有用的工程设计和分析将开发。 拟议中的研究可能会导致重大的根本性进展 在材料的高温变形中。

The purpose of the proposed research is to develop a theoretical model for the effect of temperature on time-dependent creep deformation of structural materials. The theoretical model will consist of combining the micromechanic aspects of deformation with the continuum mechanics formulation. It is planned to experimentally verify the model where possible. The temperature range covered in this investigation will extend from room temperature to above half the melting point of the materials. Particular emphasis will be given to combined effect of temperature and stresses. After the micromechanical model is developed and verified, macroscopic models, useful for engineering design and analysis will be developed. The proposed research could lead to significant fundamental advances in high temperature deformation of materials.