The influence of Mn on the tensile properties of SSM-HPDC A1-Cu-Mg-Ag alloy A201
Journal Article
2011
Permanent link to this Item
Authors
Journal Title
Journal of the South African Institute of Mining and Metallurgy
Link to Journal
Journal ISSN
Volume Title
Publisher
Publisher
University of Cape Town
Department
License
Series
Abstract
Synopsis: A201 aluminium alloy is a high strength casting alloy with a nominal composition of Al-4.6Cu-0.3Mg-0.6Ag. It is strengthened by the Ω(Al2Cu) phase and the θ’(Al2Cu) phase during heat treatment. Further strengthening of this alloy system can be obtained through the addition of transition elements, but care must be taken as other elements might have adverse effects on the mechanical properties. The objective of this study is to determine the influence of Mn on the tensile properties of rheo-processed Al-Cu-Mg-Ag alloy A201.
ThermoCalc software was used to predict the different phases that can be expected in the alloys, and scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) was used to investigate the actual phases that formed. The influence of these phases on tensile properties is quantified. SEM and ThermoCalc revealed that there is an increased amount of the Al20Cu2Mn3 with increasing Mn. The tensile properties showed that high amounts of Mn do have adverse effects on the tensile properties of alloy A201, especially the ductility.
Description
Reference:
Möller, H., Masuku, E. P., Curle, U. A., Pistorius, P. C., Knutsen, R. D., & Govender, G. (2011). The influence of Mn on the tensile properties of SSM-HPDC Al-Cu-Mg-Ag alloy A201. Journal of the South African Institute of Mining and Metallurgy, 111(3), 167.