Abstract Crystal orientation measurements using electron backscatter diffraction (EBSD) have been utilized to quantify plastic strain. However, detectability and accuracy of quantification of the plastic strain were not clear. In this study, a round robin measurement using deformed Type 316 stainless steel specimens was launched between 11 organizations using the same specimens. The magnitude of induced plastic strain was 0.25%–10.28%. Two kinds of misorientation parameters, the local misorientation and intra-grain misorientation, were quoted as the measure of the plastic strain. The intra-grain misorientation exhibited a clearer correlation with the degree of plastic strain than the local misorientation did. It was found that the EBSD measurement could detect the plastic stain of more than 1%. It was shown that the variation of the misorientation parameters between the organizations largely depended on the accuracy of crystal orientation identification, which was quantified by the background noise Bn. The error could be reduced by applying the smoothing filter. The EBSD measurements were concluded to be capable of quantifying the degree of plastic stain with accuracy of 0.5% for the strain less than 2%.

中文翻译：

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用于定量评估小塑性应变的循环 EBSD 测量

摘要 使用电子背散射衍射 (EBSD) 的晶体取向测量已被用于量化塑性应变。然而，塑性应变量化的可检测性和准确性尚不清楚。在这项研究中，在使用相同试样的 11 个组织之间启动了使用变形 316 型不锈钢试样的循环测量。诱导塑性应变的大小为 0.25%–10.28%。两种取向误差参数，局部取向误差和晶粒内取向误差，被引用作为塑性应变的量度。晶粒内取向错误与塑性应变程度的相关性比局部取向错误更清楚。发现EBSD测量可以检测到1%以上的塑料污渍。结果表明，组织间错位参数的变化很大程度上取决于晶体取向识别的准确性，其通过背景噪声Bn进行量化。通过应用平滑滤波器可以减少误差。EBSD 测量的结论是能够量化塑料染色的程度，对于小于 2% 的应变，精度为 0.5%。