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Assessment of welding-induced plasticity via electron backscatter diffraction

机译:通过电子反向散射衍射评估焊接诱导的可塑性

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Electron backscatter diffraction (EBSD) has been used to obtain orientation maps across a multi-pass slot weld in austenitic stainless steel plate. Spatially-resolved intragranular misorientation analyses have been performed, and a relationship between lattice misorientation and accumulated plastic strain has been used to quantify welding-induced plasticity. Qualitative features are captured across multiple length scales. Quantitative accuracy is demonstrated by comparing the misorientation-based analysis to complementary hardness-based measurements, as well as numerical predictions obtained using computational weld mechanics. The shortcomings of the present misorientation analysis and the underlying assumptions made are discussed. Crown Copyright (C) 2017 Published by Elsevier Ltd. All rights reserved.
机译:电子反向散射衍射(EBSD)已被用于在奥氏体不锈钢板中的多通槽焊接上获得取向图。 已经进行了空间分辨的彻底解析了分析,并且晶格错位和积聚塑性菌株之间的关系已经用于量化焊接诱导的可塑性。 在多个长度尺度上捕获定性功能。 通过比较基于错误的基于硬度的测量来证明定量准确度,以及使用计算焊接力学获得的数值预测。 讨论了目前的杂乱分析和所作潜在的假设的缺点。 Crown版权所有(c)2017由elestvier有限公司出版。保留所有权利。

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