Journal
MATERIALS CHARACTERIZATION
Volume 120, Issue -, Pages 268-272Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2016.09.008
Keywords
Steel; Aluminium; Intermetallics; Hot dip aluminizing; Welding
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Funding
- Special Research Fund (BOF), Ghent University [BOF10/ZAP/121]
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While Si additions to Al are widely used to reduce the thickness of the brittle intermetallic seam formed at the interface during joining of Al alloys to steel, the underlying mechanisms are not clarified yet. The developed approach for the site specific atom probe tomography analysis revealed Si enrichments at grain and phase boundaries between the theta (Fe4Al13) and eta (Fe2Al5) phase, up to about ten times that of the concentration in Al. The increase in Si concentration could play an important role for the growth kinetics of the intermetallic phases formed for example in hot-dip aluminizing of steel. (C) 2016 Elsevier Inc. All rights reserved.
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