Вестник Нижегородского университета им. Н.И. Лобачевского. Серия: Социальные науки

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Title of Article

INVESTIGATION OF CORROSION-FATIGUE CRACK ORIGIN IN LOW-CARBON PIPE STEELS

Issue	5
Date	2010

Article type	scientific article	UDC	539.4; 669.3
Pages	181-185	Keywords	steel, structure, cementite, grain boundary, corrosion fatigue, crack, plastic deformation

Authors

Butusova Elena NikolaevnaNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo
Nokhrin Aleksey VladimirovichNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo
Chuvildeev Vladimir NikolaevichNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo
Kotkov Dmitriy NikolaevichNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo
Boldin Maksim SergeevichNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo
Stepanov Sergey PavlovichNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo
Chegurov Mikhail KonstantinovichNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo
Kozlova Nataliya AnatolevnaNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo
Mikhaylov Anatoliy SergeevichNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo
Viryasova Nataliya NikolaevnaNauchno-issledovatelskiy fiziko-tekhnicheskiy institut Nizhegorodskogo gosuniversiteta im. N.I. Lobachevskogo

Abstract

The influence of the ageing process on the parameters of corrosion-fatigue strength of low-carbon steels is investigated. An exponential dependence has been found of the number of cycles before the crack origin on the applied pressure amplitude. The parameters of this dependence are defined by the steel structure and to a large degree depend on the release of carbide particles at grain boundaries. A model of corrosion-fatigue crack origin is proposed on the basis of which the analysis is carried out of the influence of steel structure parameters on their susceptibility to corrosion-fatigue destruction. Calculation results are compared with experimental data.

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