Journal article
Direct measurement of the effect of cold rolling on β phase precipitation kinetics in 5xxx series aluminum alloys
Acta materialia, v 123, pp 264-271
15 Jan 2017
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The aluminum magnesium alloy system has notable attributes, such as a high strength to weight ratio and weldability, but it can become susceptible to sensitization at relatively low temperatures, which can lead to stress corrosion cracking. It is well established that growth of the secondary β phase is temperature driven, however there is little understanding about the role of prior strain in the β phase nucleation and growth process. Understanding the effect of cold rolling will also bring new insight into better thermomechanical treatments leading to a more appropriate temper to improve sensitization resistance. In this study cold rolled AA5456-H116 is observed during in situ transmission electron microscopy heating experiments. The results of this study show the impact of an increased dislocation density, due to cold rolling, on β phase precipitation as well as the effect of misorientation on growth and kinetics. The effect of additional dislocations is also observed to show an increase in precipitate density and a lowering of nucleation temperature attributed to Mg pipe diffusion.
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Details
- Title
- Direct measurement of the effect of cold rolling on β phase precipitation kinetics in 5xxx series aluminum alloys
- Creators
- D. Scotto D'Antuono - Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, United StatesJ. Gaies - Naval Surface Warfare CenterW. Golumbfskie - Naval Surface Warfare CenterM.L. Taheri - Drexel University
- Publication Details
- Acta materialia, v 123, pp 264-271
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Web of Science ID
- WOS:000389556500026
- Scopus ID
- 2-s2.0-84993982085
- Other Identifier
- 991019335511304721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Metallurgy & Metallurgical Engineering