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Electrochemical Characterization of Advanced High Strength Steel DP 780 MPa

  • A. Escalona GómezEmail author
  • M. Delgado Espino
  • M. del R. Lara Banda
  • F. Almeraya Calderón
Conference paper
  • 623 Downloads
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

Nowadays, with the increase of environmental problems, car safety became the major priority for the automotive industry. This is why advanced high strength steels were implemented instead of conventional steels. Dual-phase (DP) steels are part of this group due to their excellent combination of mechanical properties. The objective of this work is to study the corrosion behavior in a DP steel with a tensile strength of 780 MPa, in the presence of chlorides, applying electrochemical techniques obtaining parameters such as corrosion rate, type of corrosion, density of corrosion current, and corrosion potential. To know the chemical composition of the material, the X-ray fluorescence technique was used, at the end of the tests a stereoscope was used to see its morphology. As electrolytes were used: water (H2O), magnesium chloride (MgCl2), sodium chloride (NaCl), and calcium chloride (CaCl2) at 3.5 wt% and was evaluated using electrochemical techniques of potentiodynamic polarization curves (PP) and electrochemical noise (EN), using a three-electrode cell. The results indicated activation in the anodic branch, in addition there is pitting corrosion in the material under study mostly in the presence of magnesium chloride.

Keywords

AHSS Corrosion Pitting Electrochemical 

References

  1. 1.
    Castillo Gutierres DE (2017) Caracterzación microestructural y mecánica de aceros de fase dual (ferrita-martensita), obtenidos mediante procesos térmicos y termomecánicos. Ingeniare, 10Google Scholar
  2. 2.
    Schwindt CS (2013) Forming limit curve determination of a DP-780 Steel Sheet. Elsevier, 8Google Scholar
  3. 3.
    Pacheco Cedeño JS (2019)Metalurgia Física de los aceros AHSS para la industria automotriz. Paper presented at AIST-México ExpoAcero, Guanajuato, León, México,11–13 June 2019Google Scholar
  4. 4.
    International Iron and Steel Institute Advanced High-Strength Steels Application Guidelines Version 6.0, 2017, section 1 and 2Google Scholar
  5. 5.
    Dai HZ (2012) Evaluation on the effects of deicing chemicals on soil and water environment. Elsevier, 9Google Scholar
  6. 6.
    Corrosion Reviews 27(1–2):23–52, ISSN (Online) 2191-0316, ISSN (Print) 0334-6005, DOI: https://doi.org/10.1515/CORRREV.2009.27.1-2.23
  7. 7.
    ASTM E3 (2017) Standard guide for preparation of metallographic specimens. ASTM International, West Conshohocken, PA, 2017, www.astm.org
  8. 8.
    ASTM E407 (2015) Standard practice for microetching metals and alloys. ASTM International, West Conshohocken, PA, 2015, www.astm.org
  9. 9.
    ASTM G5 (2014) Standard reference test method for making potentiodynamic anodic polarization measurements. ASTM International, West Conshohocken, PA, www.astm.org
  10. 10.
    ASTM G102 (2015) Standard practice for calculation of corrosion rates and related information from electrochemical measurements. ASTM International, West Conshohocken, PA, www.astm.org
  11. 11.
    ASTM G199 (2014) Standard guide for electrochemical noise measurement. ASTM International, West Conshohocken, PA, 2014, www.astm.org http://www.worldautosteel.org/download_files/AHSS%20Guidelines%20V6/00_AHSSGuidelines_V6_20170430.pdf

Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  • A. Escalona Gómez
    • 1
    Email author
  • M. Delgado Espino
    • 1
  • M. del R. Lara Banda
    • 1
  • F. Almeraya Calderón
    • 1
  1. 1.Facultad de Ingeniería Mecánica Y Eléctrica, FIME. Centro de Investigación E Innovación En Ingeniería Aeronáutica, CIIIAUniversidad Autónoma de Nuevo León, UANLSan Nicolás de Los GarzaMexico

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