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首页> 外文期刊>Computational Materials Science >Investigation of the deformation behavior of Fe-3%Si sheet metal with large grains via crystal plasticity and finite-element modeling
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Investigation of the deformation behavior of Fe-3%Si sheet metal with large grains via crystal plasticity and finite-element modeling

机译：通过晶体可塑性和有限元模拟研究大晶粒Fe-3％Si薄板的变形行为

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摘要

The purpose of this work is the modeling and simulation of the deformation behavior of thin sheets consisting of large grains of Fe-3%Si and comparison with experiment. To this end, a crystal-plasticity-based finite-element model is developed for each grain, the grain morphology, and the specimen as a whole. The crystal plasticity model itself is rate-dependent and accounts for local dissipative hardening effects. In order to compare model predictions with experiment, the material parameters have been identified with the help of single-crystal data from [1-3]. Identified model predictions are compared with the experimental results of [4] for the deformation behavior of thin sheets of Fe-3%Si loaded incrementally in tension at room temperature. To this end, attention is restricted to the two slip families {1 1 0} and {1 1 2} expected to be active at room temperature. Comparison of model predictions for grain morphological evolution with the corresponding experimental results up to 19.5% deformation on this basis imply good agreement. In addition, model predictions for the development of the strain field and the grain reorientation field are discussed and evaluated.
机译：这项工作的目的是对由Fe-3％Si大晶粒组成的薄板的变形行为进行建模和仿真，并与实验进行比较。为此，针对每个晶粒，晶粒形态以及整个试样建立了基于晶体塑性的有限元模型。晶体可塑性模型本身是速率依赖性的，并说明了局部耗散硬化效应。为了将模型预测结果与实验结果进行比较，借助[1-3]中的单晶数据确定了材料参数。将确定的模型预测结果与[4]的实验结果进行比较，以得出在室温下逐渐加载的Fe-3％Si薄片的变形行为。为此，注意力集中在预期在室温下活跃的两个滑动族{1 1 0}和{1 1 2}。在此基础上将晶粒形态演变的模型预测与相应的高达19.5％变形的实验结果进行比较，表明一致性良好。此外，讨论并评估了应变场和晶粒取向场发展的模型预测。

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