"Analysis of the microstructural evolution and mechanical behavior of Mg-Mn-rare earth alloys"
Magnesium alloys are considered key technological metals for the transport industry due to their low density (1.7 g/cc), which makes them potential candidates to replace heavier materials such as aluminum and steel. This would result in a reduction of emissions and thus of the environmental impact of motored vehicles. Despite a great effort has been devoted to the study of magnesium alloys during the last decade, several issues must still be resolved before these metals can be widely commercialized. Among others, the presence of a large anisotropy in Mg sheet alloys, resulting from the development of a strong basal texture during rolling, should be avoided, as it limits their formability.
The global aim of this international collaborative between Spain (IMDEA Materials and UPM) and US (Michigan State University) project is to analyze the deformation, recrystallization, and damage mechanisms of several advanced Mg alloys fabricated by rare-earth alloying. A combination of microstructure and mechanical characterization techniques will be utilized to achieve the desired objective. The team at Michigan State University (MSU, US) will, in particular, carry out in-situ testing in a scanning electron microscope (SEM) in order to obtain quantitative local evidence of the operative slip and twinning systems as well as of the kinetics of recrystallization. The IMDEA Materials team will complement this study by performing the microstructural characterization and ex-situ testing of the mentioned alloys. The UPM team will utilize continuum-based plasticity modeling and mechanistic models to simulate the deformation and fracture behavior of the Mg-rare earth alloys
Partners: IMDEA Materials Institute, Polytechnic University of Madrid and Michigan State University.
Funding Organisation: Spanish Ministry of Science and Innovation (International Projects Programme)-National Science Foundation, USA (Materials World Network Progamme).
Region: Spain – USA
Project Period: 2011 – 2014
Principal Investigator: Dr. Teresa Pérez-Prado