Prediction of tensile properties of welded joint with mechanical heterogeneity;
力学性能不均匀焊接接头的强度预测
Therefore, there exist remarkable organization gradient and mechanical property heterogeneity in welded joints area,and the welded zone always becomes the weak site for cracks to initiate.
焊接是一个非均匀热循环过程,并且伴随着复杂的化学与物理冶金反应,焊接接头各区域存在很大的组织梯度和力学性能不均匀性,焊接区常常成为整个焊接结构的薄弱区和失效发生的策源地。
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