Microstructural development during friction stir welding of work hardenable Al-Mg alloys

M. M. Attallah*, Claire Davis, M. Strangwood

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Intermetallic particle and grain size distributions throughout the regions of friction stir welds in the work hardenable Al-Mg alloy 5251 have been quantified using optical and scanning electron microscopy. High temperature differential scanning calorimetry has been used to quantify the variation in stored energy across the various weld regions, which has been related to variations in the basemetal Mg2Si and Alx(Fe,Mn) ySiz inclusion populations and grain size distributions. The thermomechanical modification of particles and basemetal recrystallisation through heat affected and thermomechanically affected zones has thus been determined along with banding effects in the basemetal and verified using Gleeble simulations. The effect of spatially inhomogeneous intermetallic phases on matrix grain structure development and banding (so-called onion rings), has been identified as has the critical heating rate needed for recrystallisation without recovery.

Original languageEnglish
Title of host publicationProceedings of an International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005
EditorsJ.M. Howe, D.E. Laughlin, J.K. Lee, U. Dahmen, W.A. Soffa
Pages849-854
Number of pages6
Volume2
Publication statusPublished - 1 Dec 2005
EventInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005 - Phoenix, AZ, United Kingdom
Duration: 29 May 20053 Jun 2005

Conference

ConferenceInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005
Country/TerritoryUnited Kingdom
CityPhoenix, AZ
Period29/05/053/06/05

Keywords

  • Aluminium-based alloys
  • Friction Stir Welding
  • Recrystallisation

ASJC Scopus subject areas

  • General Engineering

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