Published date:Apr 15 2019

Journal Title: KnE Engineering

Issue title: XIX International scientific-technical conference “The Ural school-seminar of metal scientists-young researchers”

Pages:293–299

DOI: 10.18502/keg.v1i1.4423

Polukhina O.N.

Vichuzhanin D.I.

Khotinov V.A.

Schapov G.V.

Farber V.M.

Strain ageing in X80 grade pipeline with ultrafine ferrite-bainite structure by Digital Image Correlation (DIC) technique at tensile test has been studied. Three types of Luders deformation mechanisms on yield point were observed using DIC fields analysis. It was determined that mechanical behavior of the material on uniform parabolic stage of deformation strongly depends on Luders deformation mechanism type.

Keywords: X80 grade pipeline steel, stress-strain curve, discontinuous yielding, Luders deformation, Digital Image Correlation analysis, strain ageing

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