Influence of annealing temperature on sensitisation behaviour and corrosion properties of an Al‐6.8 wt% Mg alloy
Abstract
Influence of annealing temperature on β‐(Al 3 Mg 2 ) phase precipitation and corrosion properties of sensitised Al‐6.8 wt% Mg alloy is investigated. Sensitisation of specimens annealed at 320 °C results in IGC and SCC susceptibility. Microstructural characterization shows fine precipitation of Mg‐rich phase forming nearly continuous film at grain boundaries, despite small precipitated fraction (0.5%), and grain boundary faceting. Sensitised specimens annealed at 265 °C are IGC susceptible, but SCC resistant. Precipitation at grain boundaries is discrete, although the precipitated fraction is greater (3%) than in specimens annealed at 320 °C. Potentiodynamic measurements show that of all measured parameters, charge density is in the strongest correlation with the NAMLT and SSRT results.
- Authors:
-
- Department of Metallurgical Engineering, Faculty of Technology and Metallurgy University of Belgrade Karnegijeva 4, POB 35‐03 11 120 Belgrade Serbia
- ICTM‐Department of Electrochemistry University of Belgrade Njegoševa 12 11 120 Belgrade Serbia
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1400539
- Grant/Contract Number:
- DE‐AC02‐05CH11231
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Materials and Corrosion
- Additional Journal Information:
- Journal Name: Materials and Corrosion Journal Volume: 67 Journal Issue: 8; Journal ID: ISSN 0947-5117
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Radetić, T., Popović, M., Jegdić, B., and Romhanji, E. Influence of annealing temperature on sensitisation behaviour and corrosion properties of an Al‐6.8 wt% Mg alloy. Germany: N. p., 2016.
Web. doi:10.1002/maco.201508709.
Radetić, T., Popović, M., Jegdić, B., & Romhanji, E. Influence of annealing temperature on sensitisation behaviour and corrosion properties of an Al‐6.8 wt% Mg alloy. Germany. https://doi.org/10.1002/maco.201508709
Radetić, T., Popović, M., Jegdić, B., and Romhanji, E. Fri .
"Influence of annealing temperature on sensitisation behaviour and corrosion properties of an Al‐6.8 wt% Mg alloy". Germany. https://doi.org/10.1002/maco.201508709.
@article{osti_1400539,
title = {Influence of annealing temperature on sensitisation behaviour and corrosion properties of an Al‐6.8 wt% Mg alloy},
author = {Radetić, T. and Popović, M. and Jegdić, B. and Romhanji, E.},
abstractNote = {Influence of annealing temperature on β‐(Al 3 Mg 2 ) phase precipitation and corrosion properties of sensitised Al‐6.8 wt% Mg alloy is investigated. Sensitisation of specimens annealed at 320 °C results in IGC and SCC susceptibility. Microstructural characterization shows fine precipitation of Mg‐rich phase forming nearly continuous film at grain boundaries, despite small precipitated fraction (0.5%), and grain boundary faceting. Sensitised specimens annealed at 265 °C are IGC susceptible, but SCC resistant. Precipitation at grain boundaries is discrete, although the precipitated fraction is greater (3%) than in specimens annealed at 320 °C. Potentiodynamic measurements show that of all measured parameters, charge density is in the strongest correlation with the NAMLT and SSRT results.},
doi = {10.1002/maco.201508709},
journal = {Materials and Corrosion},
number = 8,
volume = 67,
place = {Germany},
year = {Fri Jan 22 00:00:00 EST 2016},
month = {Fri Jan 22 00:00:00 EST 2016}
}
https://doi.org/10.1002/maco.201508709
Web of Science
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