Improving the mechanical properties of a WE54 magnesium alloy through severe friction stir processing and rapid cooling
2022
Orozco-Caballero, A. | Álvarez Leal, Marta | Ruano, Oscar Antonio | Carreño, Fernando | Ministerio de Economía y Competitividad (España) | Comunidad de Madrid | Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
A commercial WE54 magnesium alloy was severely processed by FSP, lowering heat input, aiming to improve the mechanical properties, both strength and ductility. Additionally, a refrigerated backing anvil was used to warrant rapid cooling and maximize severity. The alloy was processed in two initial tempers, one was the as-received peak-aged T6 temper and the other one, TT, which aimed minimum feasible hardness. The microstructural characterization revealed grain sizes around 1 μm and high misorientation values. Tensile testing and ultramicroindentation after FSP revealed large strength and ductility improvement for both WE54 tempers. The results presented in the present research show that the mechanical performance of magnesium alloys can be improved by increasing processing severity, making the widespread use of these materials very competitive for the transport industry.
Afficher plus [+] Moins [-]Financial support from MINECO (Spain), Project MAT2015-68919-C3-1-R (MINECO/FEDER) is gratefully acknowledged. Pilar Rey at AIMEN is acknowledged for assisting with friction stir processing. A. O.-C. also thanks CENIM, CSIC, for a contract funded by the aforementioned project and O.A.R. for a Professor ad honorem position. M. A-L. thanks MINECO for a FPI fellowship, number BES2013-063963 (MINECO/FEDER/ESF). Finally, A. O.-C. thanks funding from Madrid Region (Comunidad de Madrid) through the Polytechnic University of Madrid (Universidad Politécnica de Madrid) in the line of Action for Encouraging Research from Young Doctors (project M190020074AOC, CAREDEL).
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