Kinetics and morphology of Lüders deformation in specimens with homogeneous structure and with a weld joint

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2 Citations (Scopus)

Abstract

The presented work focus on the investigation of the elastic-plastic transition in materials with a sharp yield point occurring through the formation and propagation of Lüders band. It has been found that the band nucleation and propagation rates in specimens with homogeneous structure are considerably different. The velocities of Lüders band fronts are correlated so that the total velocity of all moving fronts at any point of deformation is a constant value. As the rate of deformation increases, the Lüders band front velocity increases nonlinearly. If the material contains zones with high structural and phase inhomogeneity, Lüders bands nucleate along the boundaries of these zones. The kinetics and morphology of the Lüders band fronts within these zones are considerably different from those observed in other areas of specimen. It has also been found that the Lüders band front stops upon reaching the boundaries of the zones with structural and phase inhomogeneity. In this case, the front acts as a source of both individual and multiple bands.

Original languageEnglish
Pages (from-to)160-166
Number of pages7
JournalMaterials Science and Engineering A
Volume714
DOIs
Publication statusPublished - 31 Jan 2018

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Welds
Kinetics
kinetics
Nucleation
Plastics
inhomogeneity
propagation
yield point
plastics
nucleation

Keywords

  • Digital speckle photography
  • Low carbon steel
  • Lüders bands
  • Weld joint

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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title = "Kinetics and morphology of L{\"u}ders deformation in specimens with homogeneous structure and with a weld joint",
abstract = "The presented work focus on the investigation of the elastic-plastic transition in materials with a sharp yield point occurring through the formation and propagation of L{\"u}ders band. It has been found that the band nucleation and propagation rates in specimens with homogeneous structure are considerably different. The velocities of L{\"u}ders band fronts are correlated so that the total velocity of all moving fronts at any point of deformation is a constant value. As the rate of deformation increases, the L{\"u}ders band front velocity increases nonlinearly. If the material contains zones with high structural and phase inhomogeneity, L{\"u}ders bands nucleate along the boundaries of these zones. The kinetics and morphology of the L{\"u}ders band fronts within these zones are considerably different from those observed in other areas of specimen. It has also been found that the L{\"u}ders band front stops upon reaching the boundaries of the zones with structural and phase inhomogeneity. In this case, the front acts as a source of both individual and multiple bands.",
keywords = "Digital speckle photography, Low carbon steel, L{\"u}ders bands, Weld joint",
author = "Danilov, {V. I.} and Gorbatenko, {V. V.} and Zuev, {L. B.} and Orlova, {D. V.}",
year = "2018",
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TY - JOUR

T1 - Kinetics and morphology of Lüders deformation in specimens with homogeneous structure and with a weld joint

AU - Danilov, V. I.

AU - Gorbatenko, V. V.

AU - Zuev, L. B.

AU - Orlova, D. V.

PY - 2018/1/31

Y1 - 2018/1/31

N2 - The presented work focus on the investigation of the elastic-plastic transition in materials with a sharp yield point occurring through the formation and propagation of Lüders band. It has been found that the band nucleation and propagation rates in specimens with homogeneous structure are considerably different. The velocities of Lüders band fronts are correlated so that the total velocity of all moving fronts at any point of deformation is a constant value. As the rate of deformation increases, the Lüders band front velocity increases nonlinearly. If the material contains zones with high structural and phase inhomogeneity, Lüders bands nucleate along the boundaries of these zones. The kinetics and morphology of the Lüders band fronts within these zones are considerably different from those observed in other areas of specimen. It has also been found that the Lüders band front stops upon reaching the boundaries of the zones with structural and phase inhomogeneity. In this case, the front acts as a source of both individual and multiple bands.

AB - The presented work focus on the investigation of the elastic-plastic transition in materials with a sharp yield point occurring through the formation and propagation of Lüders band. It has been found that the band nucleation and propagation rates in specimens with homogeneous structure are considerably different. The velocities of Lüders band fronts are correlated so that the total velocity of all moving fronts at any point of deformation is a constant value. As the rate of deformation increases, the Lüders band front velocity increases nonlinearly. If the material contains zones with high structural and phase inhomogeneity, Lüders bands nucleate along the boundaries of these zones. The kinetics and morphology of the Lüders band fronts within these zones are considerably different from those observed in other areas of specimen. It has also been found that the Lüders band front stops upon reaching the boundaries of the zones with structural and phase inhomogeneity. In this case, the front acts as a source of both individual and multiple bands.

KW - Digital speckle photography

KW - Low carbon steel

KW - Lüders bands

KW - Weld joint

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DO - 10.1016/j.msea.2017.12.100

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JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

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