The TEM in-situ Observation of Hydrogen-induced Nanocrack of Austenitic Stainless Steel

Hydrogen-nduced delayed fracture occurs in hydrogen-charged austenitic stability stainless steel The fracture morphology changes from dimple to quasicleavage. The plastic zone and deformation in front of the notch increase with charging time during cathodic charging for austenitic stainless steel. T...

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Published inChinese science bulletin Vol. 39; no. 16; pp. 1329 - 1333
Main Author 陈奇志 褚武扬 乔利杰 肖纪美
Format Journal Article
LanguageEnglish
Published 01.08.1994
Subjects
embrittle
hydrogen
microcrack
TEM
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ISSN1001-6538
1861-9541

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Abstract Hydrogen-nduced delayed fracture occurs in hydrogen-charged austenitic stability stainless steel The fracture morphology changes from dimple to quasicleavage. The plastic zone and deformation in front of the notch increase with charging time during cathodic charging for austenitic stainless steel. This phenomenon indicates
AbstractList Hydrogen charging enhances dislocation increment and movement in austenitic stainless steel. Information available about their role in hydrogen induced microcrack is meagre. Study on the relation between dislocation emission and movement with hydrogen-induced microcrack nucleation is reported in the present article. In situ tensile test of hydrogen-charged austenitic stainless steel 310 is done under transmission electron microscope. Dislocations are found to emit from a crack tip followed by a dislocation free zone formation. Dislocation free zone shows high strain. It is found to be a heavily distorted nonlinearly elastic zone. Microcracks initiate in the dislocation free zone.
Hydrogen-nduced delayed fracture occurs in hydrogen-charged austenitic stability stainless steel The fracture morphology changes from dimple to quasicleavage. The plastic zone and deformation in front of the notch increase with charging time during cathodic charging for austenitic stainless steel. This phenomenon indicates
Author 陈奇志 褚武扬 乔利杰 肖纪美
AuthorAffiliation Department of Materials Physics University of Science and Technology Beijing Beijing 100083 PRC PRC
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CHEN Qi-Zhi , CHU Wu-Yang QIAO Li-Jieand XIAO Ji-Mei(Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083, PRC)
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Snippet Hydrogen-nduced delayed fracture occurs in hydrogen-charged austenitic stability stainless steel The fracture morphology changes from dimple to quasicleavage....
Hydrogen charging enhances dislocation increment and movement in austenitic stainless steel. Information available about their role in hydrogen induced...
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SubjectTerms embrittle
hydrogen
microcrack
TEM
Title The TEM in-situ Observation of Hydrogen-induced Nanocrack of Austenitic Stainless Steel
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