Measurement of the residual stress field in MIG-welded Al-2024 and Al-7150 aluminium alloy compact tension specimens

S. Pratihar, V. Stelmukh, M. T. Hutchings, M. E. Fitzpatrick, U. Stuhr, L. Edwards

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Neutron diffraction has been used to measure the residual-stress field in MIG-welded Al-2024 and Al-7150 aluminium alloy compact-tension (CT) specimens. The measurements were made on the POLDI time-of-flight diffractometer, which uses a multiple frame overlap method. Strains in the three principal directions of each specimen were determined from the measured lattice plane spacing as a function of position through the weld relative to stress-free reference lattice plane spacings obtained from a comb-like reference sample. The resultant calculated residual stresses are compared to those existing in the original welded plate from which the specimens were machined.

Original languageEnglish
Pages (from-to)46-53
Number of pages8
JournalMaterials Science and Engineering A
Volume437
Issue number1
Early online date23 Jun 2006
DOIs
Publication statusPublished - 10 Nov 2006
Externally publishedYes

Keywords

  • Aluminium alloys
  • MIG welding
  • Neutron diffraction
  • Residual stress
  • Time-of-flight

ASJC Scopus subject areas

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

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