Effect of thermomechanical history on intergranular corrosion of extruded AlMgSi(Cu) model alloy

Svenningsen, Gaute; Larsen, Magnus Hurlen; Nordlien, Jan Halvor; Nisancioḡl̄ū, Kemal

doi:10.1016/j.corsci.2006.03.018

Cited by 113 publications

(114 citation statements)

References 21 publications

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“…[11,12] Hence, this work investigates possible ways of improving IGC resistance of Cu-containing Al-Mg-Si alloys by manipulating the thermo-mechanical processes leading to the condition of the final product. Recent works indicate that IGC propagates due to the presence of a continuous Cu film along the grain boundaries (GBs), and that IGC resistance increases at over-aged conditions due to induced discontinuity in this film.…”

Section: Al-mg-si(-cu) (6xxx) Alloys Are Widely Used Inmentioning

confidence: 99%

The Correlation Between Intergranular Corrosion Resistance and Copper Content in the Precipitate Microstructure in an AA6005A Alloy

Marioara

Lervik

Grønvold

et al. 2018

Metall Mater Trans A

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A positive correlation is observed between the amount of Cu incorporated in hardening precipitates and intergranular corrosion resistance in an artificially aged Cu-containing 6005A alloy. Three mechanisms have been identified to increase Cu absorption in hardening precipitates: by increasing aging temperature, by pre-deformation, and by slow cooling from solution heat treatment. These findings demonstrate the possibility for development of new processing routes to produce Cu-containing Al-Mg-Si alloys with improved corrosion resistance.

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Section: Al-mg-si(-cu) (6xxx) Alloys Are Widely Used Inmentioning

confidence: 99%

The Correlation Between Intergranular Corrosion Resistance and Copper Content in the Precipitate Microstructure in an AA6005A Alloy

Marioara

Lervik

Grønvold

et al. 2018

Metall Mater Trans A

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“…3-5). However, Cu addition should be treated with care, to still meet the product requirements on corrosion resistivity [43][44][45].…”

Section: ) As Being Primarily Influenced By the Early Clustering mentioning

confidence: 99%

Design strategy for controlled natural aging in Al–Mg–Si alloys

Werinos

Antrekowitsch

Ebner³

et al. 2016

Acta Materialia

112

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This study presents a design strategy for Al-Mg-Si alloys to control natural aging. Recently, trace addition of Sn was shown to suppress natural aging for up to two weeks, which was explained by the strong trapping of vacancies to Sn atoms. Here we explore the effect of Keywords: aluminum alloys, natural aging, phase transformation kinetics, vacancies, trace elements This is a pre-print of the following article: Werinos, M.; Antrekowitsch, H.; Ebner, T.; Prillhofer, R.; Curtin, W. A.; Uggowitzer, P. J.; Pogatscher, S. Acta Mater. 2016, 118, 296-305.. The formal publication is available at http://dx

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“…Other studies on AlMgSiCu alloys evaluate the effects of heat treatments on micro-galvanic coupling between grain boundary precipitates and the depleted zones 24,25,30 . It was concluded that the IGC resistance is achieved by lowering the Cu content or conducting an appropriate heat treatment if high Cu content is inevitable.…”

Section: Finnegan and Woodsmentioning

confidence: 99%

“…The influence of heat treatment on the corrosion susceptibility of aluminum alloys has been evaluated as well 6,[15][16][17][18][19][20][21][22][23][24][25][26] . We studied the effect of heat treatment on filiform corrosion (FFC) susceptibility of the rolled aluminum alloy AA3005 at the 150-500°C heat treatment range 6 .…”

Section: Introductionmentioning

confidence: 99%

Improved Corrosion Resistance of Aluminum Brazing Sheet by a Post-Brazing Heat Treatment

Afshar¹,

Tichelaar²,

Glenn³

et al. 2017

CORROSION

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This work studies the influence of the microstructure on the corrosion mechanism and susceptibility of as-brazed aluminum sheet. Various microstructures are obtained using post-brazing heat treatments developed to enhance the corrosion resistance of an AA4xxx/AA3xxx brazing sheet. The heat treatment results in a decrease of the matrix Si content within the heat affected zone (HAZ) and an increase of the Si fraction in the α-Al(Fe-Mn)Si phase. Additionally, the effect of the heat treatment on the local electrochemical activity and corrosion properties are studied. The results indicate that the corrosion susceptibility of the as-brazed structure is diminished due to an amendment of the local electrochemical behavior of the outer clad surface after the post-brazing heat treatment. Moreover, the potential difference between the clad material and core is increased resulting in an improved sacrificial cathodic protection of the core by the resolidified clad layer.

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Effect of thermomechanical history on intergranular corrosion of extruded AlMgSi(Cu) model alloy

Cited by 113 publications

References 21 publications

The Correlation Between Intergranular Corrosion Resistance and Copper Content in the Precipitate Microstructure in an AA6005A Alloy

The Correlation Between Intergranular Corrosion Resistance and Copper Content in the Precipitate Microstructure in an AA6005A Alloy

Design strategy for controlled natural aging in Al–Mg–Si alloys

Improved Corrosion Resistance of Aluminum Brazing Sheet by a Post-Brazing Heat Treatment

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