Effect of ultrasonic peening and accelerated corrosion exposure on the residual stress distribution in welded marine steel

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Abstract

Specimens of DH36 marine steel were prepared with welded attachments. Residual stress measurements were made on the samples as-welded, following an ultrasonic peening treatment, and following accelerated corrosion exposure after ultrasonic peening. Neutron diffraction and the contour method were used for determining the residual stress profiles. The welding introduces tensile near-surface residual stress, approaching the material yield strength, and the ultrasonic peening overlays this with a compressive residual stress. Material removal by corrosion decreases the peak surface compressive stress slightly, by removal of a layer of stressed material, but does not cause significant redistribution of the residual stress profile.
Original languageEnglish
Pages (from-to)1214-1226
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume46
Issue number3
DOIs
Publication statusPublished - 2015

Bibliographical note

The related URL leads to a read only copy of the published version of the paper
The final publication is available at Springer via http://dx.doi.org/10.1007/s11661-014-2713-3 .

Keywords

  • Corrosion
  • Neutron diffraction
  • Residual stresses
  • Strength of materials
  • Stress analysis
  • Welding
  • Welds
  • Accelerated corrosion
  • Compressive residual stress
  • Residual stress profiles
  • Surface compressive stress
  • Surface residual stress
  • Ultrasonic peening
  • Ultrasonic peening treatment
  • Welded attachments
  • Compressive stress

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