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受裂纹应力场诱使,进入材料间隙位置的氢原子会向裂端附近区域偏聚,形成“氢气团”。龙期威、Hirth等基于裂纹线弹性应力场与氢原子的弹性交互作用提出了氢原子偏聚Ⅰ型裂端的物理模型。黄显亚、吴世丁等采用离子探针探测到Ⅰ型裂纹前端出现氢富集峰。而对复合裂端附近溶质偏聚的理论尚未见报道。
Induced by the stress field of the crack, the hydrogen atoms entering the gap of the material will be segregated toward the area near the crack tip to form a “hydrogen mass.” Based on the elastic interaction between cracked linear elastic stress field and hydrogen atoms, Long et al. And Hirth et al. Proposed a physical model of type I cleavage of hydrogen atoms. Huang Xianya, Wu Shi Ding and other ions detected by ion probe type Ⅰ crack front hydrogen enrichment peak. The theory of solute segregation near the composite fracture has not been reported.