(I+II) MIXED MODE HYDROGEN INDUCED CRACKING

Acta Metall Sin

1989, Vol. 25

Issue (1): 48-52 DOI:

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(I+II) MIXED MODE HYDROGEN INDUCED CRACKING

GAO Hua;XUE Lijue Shanghai University of Engineerin Science

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GAO Hua;XUE Lijue Shanghai University of Engineerin Science. (I+II) MIXED MODE HYDROGEN INDUCED CRACKING. Acta Metall Sin, 1989, 25(1): 48-52.

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Abstract

Hydrogen induced cracking of 0.3% C,1% Cr, 1% Mn, 1% Si highstrength steel has been studied under simple mode Ⅰ, mode Ⅱ and (Ⅰ+Ⅱ) mixedmode loading conditions. After being hydrogen-charged in 1N H_2SO_4 solution, thematerial behaved hydrogen embrittlement in all the cases studied. The results showthat simple mode Ⅰ or mode Ⅱ loading are more susceptible to hydrogen embrittle-ment than (Ⅰ+Ⅱ) mixed mode. For explaining the experimental results, the effectsof hydrostatic tension as well as plastic deformation ahead of crack tip has beendiscussed.

Key words: (Ⅰ+Ⅱ) mixed mode hydrogen induced cracking

Received: 18 January 1989

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1989/V25/I1/48

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