MICROSTRUCTURE,DIFFUSION ACCUMULATION OF HYDROGEN AND CRACKING BEHAVIOR IN THE INTERFACE BETWEEN CLADDING AND BASE METALL
堆焊结构界面区附近的微观组织结构,氢扩散富集与开裂行为研究

The relationships among the microstructure, diction accUmulatinn of hydrogen and hydrogen induced crabbing behavinr of the interfaCe were investigated. The eXperimental cults saal that the hydrogen distribution in the interfaCe is corresponding to its ndcrostructure,the behavior of by~n induced cracking may expressed by the theory of molecular hydrogen PreSSure. The paths where hydrogen disbonding cracks nucleated and propagated were classal into four typeS, the disbonding cracks would not penetrate into the base metal.