hydrogen embrittlement crack

基本解释

The hydrogen-induced delayEd crack and the embrittlement of coarse-grained HAZ are the main problems influencing the welding quality.
焊接质量问题主要表现在出现氢致延迟裂纹和焊接粗晶区的脆性。
Figure 17 is a scanning electron microscope view of a typical hydrogen embrittlement crack where separation occurs along grain boundaries.
图17示意了用电子显微镜扫描出的沿晶粒边界产生的氢脆裂纹。
The results show that tiny crack main by using the unqualified protect gas(Ar)during welding could cause the increasing hydrogen contain in the weld area, created the hydrogen embrittlement crack.
结果表明：由于焊接工艺规范控制不当，未及时进行消氢处理，焊件的碳当量提高具有明显的淬硬倾向，焊接结构和较大的焊件厚度引起拘束应力等综合作用产生了延迟裂纹。