首页|(162872)Corrosion behaviour of 2A97-T8 Al-Cu-Li alloy extrusion

(162872)Corrosion behaviour of 2A97-T8 Al-Cu-Li alloy extrusion

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  • NSTL
  • Elsevier
In the present study, correlative corrosion testing and electron microscopy, including quasi-in-situ electron microscopy, are employed to investigate the corrosion behaviour of 2A97-T8 Al-Cu-Li alloy extrusion in 3.5 wt% NaCl solution. It is found that the corrosion behaviour of the alloy is influenced by synergetic effect of the plastic deformation introduced by the thermomechanical processing during alloy fabrication and the precipitation of T_1 phase during T8 treatment. Localized corrosion initiates and propagates preferentially within non-recrystallized regions of the partially recrystallized alloy. Corrosion initiated at coarse constituent intermetallic particles is confined to its periphery, which doesn't develop further when the particles are disconnected from alloy matrix.

Al-Cu-Li alloyGrain-stored energyLocalized corrosionCorrosion bandsQuasi-in-situ characterization

Xinxin Zhang、You Lv、Xiaorong Zhou

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Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Hubei Engineering Research Centre for Biomaterials

Corrosion and Protection Centre, School of Materials, the University of Manchester, Manchester M13 9PL, UK

2022

10.1016/j.jallcom.2021.162872

Journal of Alloys and Compounds

Journal of Alloys and Compounds

EISCI
ISSN：0925-8388
年,卷(期)：2022.898
  • 8
  • 49