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 language | English |
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Title of host publication | Proceedings of an International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005 |
Editors | J.M. Howe, D.E. Laughlin, J.K. Lee, U. Dahmen, W.A. Soffa |
Pages | 849-854 |
Number of pages | 6 |
Volume | 2 |
Publication status | Published - 1 Dec 2005 |
Event | International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005 - Phoenix, AZ, United Kingdom Duration: 29 May 2005 → 3 Jun 2005 |
Conference
Conference | International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005 |
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Country/Territory | United Kingdom |
City | Phoenix, AZ |
Period | 29/05/05 → 3/06/05 |
Keywords
- Aluminium-based alloys
- Friction Stir Welding
- Recrystallisation
ASJC Scopus subject areas
- Engineering(all)