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Modeling of thermal stresses in low alloy steels

机译:低合金钢中的热应力建模

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Computing the evolution of thermal stresses accurately requires appropriate constitutive relations. This includes both the thermal and mechanical aspects, as temperature is the driver to thermal stresses. The paradigm of Integrated Computational Materials Engineering (ICME) aims at being able to quantitatively relate process-structure-property of a material. The article describes physics based models, denoted bridging elements, which are one step towards the vision of ICME. They couple material structure with heat capacity, heat conductivity, thermal and transformation strains and elastic properties for hypo-eutectoid steels. The models can account for the chemical composition of the steel and its processing, i.e. thermomechanical history, giving the evolution of the microstructure and the corresponding properties.
机译:准确计算热应力的变化需要适当的本构关系。这包括热方面和机械方面,因为温度是热应力的驱动因素。集成计算材料工程(ICME)的范例旨在能够定量地关联材料的过程结构特性。本文介绍了基于物理的模型,称为桥接元素,这是迈向ICME愿景的一步。它们将材料结构与次共析钢的热容,热导率,热和相变应变以及弹性特性结合在一起。这些模型可以说明钢的化学成分及其加工过程,即热机械历史,从而给出组织的演变和相应的性能。

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