Back to Search Start Over

Effect of acid mine drainage on the mechanical properties of AISI 1020 carbon steel and AW6060 aluminium

Authors :
Miguel Sarmiento, Aguasanta
Rodriguez-Perez, Angel Mariano
Davila, Jose Miguel
Luisa de la Torre, Maria
Source :
Journal of Materials Research and Technology; September-October 2024, Vol. 32 Issue: 1 p541-549, 9p
Publication Year :
2024

Abstract

Acid mine drainage severely affects metallic materials due to the high acidity and oxidising capacity of these lixiviates. A study was carried out to evaluate the time evolution of the mechanical properties of AISI 1020 carbon steel and AW6060 aluminium in contact with acid mine drainage. Weight loss, fatigue and tensile strength were evaluated in two different scenarios, one involving erosion corrosion (dynamic scenario) and the other involving chemical corrosion only (static scenario). Over 80 days of exposure in a static scenario, weight loss is almost 2% for aluminium and 0.5% for steel, fatigue strength is reduced by 28% for steel and ultimate tensile strength is reduced by almost 5% for aluminium and by 2.5% for steel. In a dynamic scenario, the weight loss after 4 days of exposure is 30–35% for both materials, the fatigue strength is reduced by almost 50% for steel, the ultimate tensile strength is reduced by 33% for aluminium and by almost 5% for steel. Acid drainage causes an increase in brittleness and a decrease in stiffness of these materials, much more rapidly in a dynamic environment favoured by the effects of erosion corrosion.

Details

Language :
English
ISSN :
22387854
Volume :
32
Issue :
1
Database :
Supplemental Index
Journal :
Journal of Materials Research and Technology
Publication Type :
Periodical
Accession number :
ejs67002138
Full Text :
https://doi.org/10.1016/j.jmrt.2024.07.099