Efecto de la deformación por tracción sobre la orientación cristalográfica del recubrimiento y la resistencia a la corrosión en CNS de chapas de acero con recubrimientos base cinc

E. A. Sacco; J. D. Culcasi; C. L. Eisner; A. R. Di Darli

doi:10.3989/revmetalm.2002.v38.i6.425

Effect of tensile strain on the coating crystallographic orientation and the corrosion resistance in salt spray cabinet of Zn and Zn alloy coated steel sheet

Authors

E. A. Sacco CIDEPINT-Centro de Investigación y Desarrollo en Tecnología de Pinturas (CIC-CONICET). LIMF-Laboratorio de Investigaciones de Metalurgia Física "Ing. Gregorio Cusminski”.Facultad de Ingeniería-Universidad Nacional de La Plata.
J. D. Culcasi LIMF-Laboratorio de Investigaciones de Metalurgia Física "Ing. Gregorio Cusminski”.Facultad de Ingeniería-Universidad Nacional de La Plata.
C. L. Eisner CIDEPINT-Centro de Investigación y Desarrollo en Tecnología de Pinturas (CIC-CONICET). La Plata
A. R. Di Darli CIDEPINT-Centro de Investigación y Desarrollo en Tecnología de Pinturas (CIC-CONICET). La Plata

DOI:

https://doi.org/10.3989/revmetalm.2002.v38.i6.425

Keywords:

Galvanized steel, 55Al-Zn, Strain, Crystallographic orientation, Corrosion, Salt spray cabinet,

Abstract

Hot dip Zn and 55 % Al - 1.6 % Si - 43.4 % Zn alloy (55Al-Zn) coated steel sheets were submitted to uniaxial tension with the aim of evaluating the strain and failure type as well as their corrosion performance in the salt spray cabinet test. As the degree of strain increased, the basal orientation of the Zn coating turned into a prismatic one. Furthermore, the development of many twins, some intergranular cracks and few intragranular ones could also be observed. On the other hand, in 55Al-Zn alloy coatings, the α phase crystallographic orientation changed from {311} towards {100} and {331}, whilst the β phase crystallographic orientation {10.1} did not change. In this material the only failure type observed was the cracking of the interdendritic component. In salt spray cabinet the anticorrosive performance of steel/55Al-Zn sheets was much better than that of the galvanized ones.

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Published

2002-12-30

How to Cite

Sacco, E. A., Culcasi, J. D., Eisner, C. L., & Di Darli, A. R. (2002). Effect of tensile strain on the coating crystallographic orientation and the corrosion resistance in salt spray cabinet of Zn and Zn alloy coated steel sheet. Revista De Metalurgia, 38(6), 403–409. https://doi.org/10.3989/revmetalm.2002.v38.i6.425

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Issue

Vol. 38 No. 6 (2002)

Section

Articles

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