MICROSTRUCTURE,DIFFUSION ACCUMULATION OF HYDROGEN AND CRACKING BEHAVIOR IN THE INTERFACE BETWEEN CLADDING AND BASE METALL

Acta Metall Sin

1998, Vol. 34

Issue (6): 633-639 DOI:

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MICROSTRUCTURE,DIFFUSION ACCUMULATION OF HYDROGEN AND CRACKING BEHAVIOR IN THE INTERFACE BETWEEN CLADDING AND BASE METALL

TENG Qinghai; CHEN Lian; LIU Di;; KE Wei(Institute of Corrosion and Protection of Metal; The Chinese Academy of Sciences; State Key Laboratory forCorrosion and Protection; Shenyang 110015)( Institute of Metal Research; The Chinese Academy of Sciences; Liaoning Key Laboratory for Material andHydrogen; Shenyang 110015)( Institute of Equipmeat;Research Fushun Petrochemical Company; Fushun )(Correspondednt : MENC Qinghai; Tel: (0413)B434819; Tel. (0413)2425835

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Abstract 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.

Key words: cladding/matris interface microstructure hydrogen diffusion hydrogen in duced cracking

Received: 18 June 1998

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1998/V34/I6/633

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