Obrabotka Metallov 2020 Vol. 22 No. 4

OBRABOTKAMETALLOV Vol. 22 No. 4 2020 136 MATERIAL SCIENCE 18. Kalashnikova T.A., Chumaevskii A.V., Kalashnikov K.N., Fortuna S.V., Kolubaev E.A., Tarasov S.Yu. Microstructural analysis of friction stir butt welded Al-Mg-Sc-Zr alloy heavy gauge sheets. Metals , 2020, vol. 10, iss. 806, pp. 1–20. DOI: 10.3390/met10060806. 19. Kim D., Lee W., Kim J., Kim C., Chung K. Formability evaluation of friction stir welded 6111-T4 sheet with respect to joining material direction. International Journal of Mechanical Sciences , 2010, vol. 52, pp. 612–625. DOI: 10.1016/j.ijmecsci.2010.01.001. 20. Zhang C., Huang G., Cao Y., Zhu Y., Li W., Wang X., Liu Q. Microstructure and mechanical properties of dissimilar friction stir welded AA2024-7075 joints: Influence of joining material direction. Materials Science and Engineering: A , 2019, vol. 766, iss. 24, p. 138368. DOI: 10.1016/j.msea.2019.138368. 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) .