By predicting the complex deformation mechanisms, visco-plastic self-consistent (VPSC) model has been found to be a useful tool for investigating plastic deformation behavior of magnesium alloy. The standard version of VPSC model involves a large number of adjustable parameters. Using independent arguments obtained from single tests, VPSC model with a minimum parameter approach immensely reduces the number of adjustable parameters, hence shows huge potential in simulating plastic deformation behavior of thin magnesium alloy sheet. The predictability of this new approach is thoroughly assessed in the present study. Although only the mechanical response of in-plane tension (IPT) in AZ31 magnesium alloy is applied to calibrated the corresponding material parameters, simulated results in terms of texture evolution using VPSC model with a minimum parameter approach show a relatively small difference by comparison with the predicted ones applying the standard version of VPSC model during IPT, in-plane compression (IPC), through-thickness compression (TTC), and plane strain compression (PSC), respectively. Furthermore, the corresponding activated deformation mechanisms during various deformation processes are further analyzed. With the exception of pyramidal <c+a> slip, the predicted activities of remaining deformation mechanisms are generally consistent with each other. This phenomenon is identified to be the root of minor difference in texture evolution. Moreover, the predicted activities in pyramidal <c+a> slip using VPSC model with a minimum parameter approach are relatively higher than the corresponding ones in the case with the standard version of VPSC model. However, these reported results are not beyond the maximum of published literature, and hence are acceptable when simulating various plastic deformation behavior of AZ31 magnesium alloy.

通过预测复杂的变形机制，发现粘塑性自洽（VPSC）模型是研究镁合金塑性变形行为的有用工具。VPSC模型的标准版本涉及大量可调参数。使用从单个测试获得的独立参数，采用最小参数方法的VPSC模型极大地减少了可调整参数的数量，因此在模拟薄镁合金薄板的塑性变形行为方面显示出巨大的潜力。本研究对这种新方法的可预测性进行了全面评估。尽管仅使用AZ31镁合金中的面内张力（IPT）的机械响应来校准相应的材料参数，在IPT，面内压缩（IPC），厚度方向压缩（TTC）期间，使用最小参数方法的VPSC模型在纹理演变方面的模拟结果与采用标准版本VPSC模型的预测结果相比，显示出相对较小的差异）和平面应变压缩（PSC）。此外，进一步分析了各种变形过程中相应的激活变形机制。除金字塔形<c + a>滑移外，其余变形机制的预测活动通常彼此一致。该现象被认为是纹理演变中微小差异的根源。此外，金字塔<c + a>中的预测活动 使用带有最小参数方法的VPSC模型的滑移率相对于标准版本VPSC模型的情况相对较高。但是，这些报道的结果并没有超出已发表的文献的最大值，因此在模拟AZ31镁合金的各种塑性变形行为时是可以接受的。