Evolution of microstructure and residual stress in hot rolled Ti-6Al-4V plates subjected to different heat treatment conditions

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Abstract

Hot rolled Ti-6Al-4V plate samples were taken from three different stages of an industrial heat treatment process; one as-rolled and two heat treated. This was followed by microstructure characterization using optical microscopy. Surface and through-thickness residual stress was determined using a combination of X-ray diffraction (XRD) and the contour method. Measured residual stress distributions showed similarities in distribution with that obtained for rolled Al-7050 alloy; including compressive troughs near the outer thickness on both sides, leading towards a tensile zone around the center with a local minima at the plate center thickness. Microstructure and residual stress data was then used to draw comparisons between the investigated conditions.
Original languageEnglish
Title of host publicationResidual Stresses 2018 – ECRS-10
Pages171-176
Number of pages6
Volume6
ISBN (Electronic)9781945291890
DOIs
Publication statusE-pub ahead of print - 11 Sep 2018

Keywords

  • contour method
  • x-ray diffraction
  • titanium alloy
  • phase transformation

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