Obrabotka Metallov 2020 Vol. 22 No. 4

OBRABOTKAMETALLOV Vol. 22 No. 4 2020 123 MATERIAL SCIENCE 19. Salih O.S., Neate N., Ou H., Sun W. In fl uence of process parameters on the microstructural evolution and mechanical characterisations of friction stir welded Al-Mg-Si alloy. Journal of Materials Processing Technology , 2020, vol. 275, p. 116366. DOI: 10.1016/j.jmatprotec.2019.116366. 20. Rajakumar S., Muralidharan C., Balasubramanian V. In fl uence of friction stir welding process and tool parameters on strength properties of AA7075-T6 aluminium alloy joints. Materials and Design , 2011, vol. 32, pp. 535–549. DOI: 10.1016/j.matdes.2010.08.025. 21. Dialami N., Cervera M., Chiumenti M. Defect formation and material fl ow in friction stir welding. European Journal of Mechanics – A/Solids , 2020, vol. 80, p. 103912. DOI: 10.1016/j.euromechsol.2019.103912.https://doi. org/10.1016/j.euromechsol.2019.103912. Con fl icts of Interest The authors declare no con fl ict of interest.  2020 The Authors. Published by Novosibirsk State Technical University. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0) .