The galvanic corrosion of welded ultra-high strength steels used for automotive applications
- 1. Materials Research Centre, College of Engineering, Swansea University, Bay Campus, Fabian Way, Crymlyn Burrow, Swansea, SA1 8EN (United Kingdom)
- 2. Product Engineering, Tata Steel (United Kingdom)
Description
Highlights: • Corrosion of welded ultrahigh strength, and high strength low alloy steel couples. • Corrosion concentrated in weld zone in the case that like samples welded together. • Corrosion located on ultrahigh strength steel for couples of dissimilar samples. • Localised corrosion morphology observed. - Abstract: In situ Scanning Vibrating Electrode Technique and time lapse photography were used to study the galvanic corrosion of high strength low alloy (HSLA) steel, laser welded to hot stamped ultra high strength steel (UHSS) in 0.017 M NaCl. Samples of HSLA welded to UHSS exhibited corrosion focused on the UHSS. This galvanic effect was due to a -0.2 V difference in OCP for the UHSS. SVET derived metal loss increased by a factor of >2 for this couple. The localised corrosion observed may reduce the fatigue resistance and is of significance considering the increased use of thinner UHSS.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.corsci.2018.03.025Additional details
Identifiers
- DOI
- 10.1016/j.corsci.2018.03.025;
- PII
- S0010938X17321674;
Publishing Information
- Journal Title
- Corrosion Science
- Journal Volume
- 136
- Journal Page Range
- p. 366-373
- ISSN
- 0010-938X
- CODEN
- CRRSAA
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 51002295
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ELECTROCHEMICAL CORROSION; ELECTRODES; FATIGUE; LOW ALLOY STEELS; METALS; MORPHOLOGY; PHOTOGRAPHY; SODIUM CHLORIDES; WELDED JOINTS
- Descriptors DEC
- ALKALI METAL COMPOUNDS; ALLOYS; CARBON ADDITIONS; CHEMICAL REACTIONS; CHLORIDES; CHLORINE COMPOUNDS; CORROSION; ELEMENTS; HALIDES; HALOGEN COMPOUNDS; IRON ALLOYS; IRON BASE ALLOYS; JOINTS; MECHANICAL PROPERTIES; SODIUM COMPOUNDS; SODIUM HALIDES; STEELS; TRANSITION ELEMENT ALLOYS
Optional Information
- Copyright
- Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.