DISTRIBUTION OF HYDROGEN NEAR NOTCH TIP UNDER MODE Ⅰ LOADING

Distribution of hydrogen near crack tiphas long been recognized as a major factor inhydrogen induced cracking.It governs manyaspects,such as the location where the prima-ry crack occurs,the way that crack propa-gates,etc.Therefore understanding of distri-bution of hydrogen near crack tip is of im-portant significance.The first relationship be-