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Influence of equal-channel angular pressing on the corrosion fatigue behaviour of an Al-Mg-Si aluminium alloy for automotive conductors

Rochet, Clement and Andrieu, Eric and Arfaei, Babak and Harouard, Jean-Paul and Laurino, Adrien and Lowe, Terry and Odemer, Grégory and Blanc, Christine Influence of equal-channel angular pressing on the corrosion fatigue behaviour of an Al-Mg-Si aluminium alloy for automotive conductors. (2020) International Journal of Fatigue, 140. 105812. ISSN 0142-1123

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Official URL: https://doi.org/10.1016/J.IJFATIGUE.2020.105812

Abstract

The influence of equal channel angular pressing (ECAP) on the corrosion fatigue behaviour of an Al-Mg-Si alloy was studied. Preliminary fatigue tests in air showed an increase in fatigue lifetime for ECAP samples, as compared to as-received samples, related to the ECAP-induced grain refinement. After pre-corrosion, the fatigue lifetime was lower for ECAP samples than for as-received samples, because the fragmentation of coarse intermetallics during ECAP led to an increase in the density of corrosion defects.C orrosion fatigue tests demonstrated a synergy between cyclic mechanical loading and corrosion processes for all samples; a deleterious effect of ECAP was also noted.

Item Type:Article
HAL Id:hal-03033280
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Colorado School of Mines (USA)
Other partners > Ford Motor Company (USA)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > LEONI WIRING SYSTEMS FRANCE (FRANCE)
Laboratory name:
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Deposited On:16 Oct 2020 12:11

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