Ivanov A.N. et. al. 2019 Vol. 21 No. 2

OBRABOTKAMETALLOV Vol. 21 No. 2 2019 52 TECHNOLOGY 4. Podržaj P., Jerman B., Klobčar D. Welding defects at friction stir welding. Metalurgija , 2015, vol. 54 (2), pp. 387–389. 5. Karlsson J., Karlsson B., Larsson H., Karlsson L., Svensson L.E. Microstructure and properties of friction stir welded aluminium alloys. Proceedings of 7th International Conference on Joints in Aluminium – INALCO 98 . Cam- bridge, Woodhead Publishing, 1998, pp. 221–230. 6. Cerri E., Leo P. Influence of high temperature thermal treatment on grain stability and mechanical properties of medium strength aluminium alloy friction stir welds. Journal of Materials Processing Technology , 2013, vol. 213, pp. 75–83. 7. Arunprasad R.V., Surendhiran G., Ragul M., Soundarrajan T., Moutheepan S., Boopathi S. Review on friction stir welding process. International Journal of Applied Engineering , 2018, vol. 13, no. 8, pp. 5750–5758. 8. Nirgude S.K., Choudhari C.M., Kalpande S.D. A review on pre/post treatments used in friction stir welding. International Conference on Advances in Thermal Systems, Materials and Design Engineering (ATSMDE-2017) , 21–22 December 2017, Mumbai, India, pp. 503–509. DOI: 10.2139/ssrn.3101621. 9. BoonchouytanW., Chatthong J., Rawangwong S., Burapa R. Effect of heat treatment T6 on the friction stir weld- ed SSM 6061 aluminum alloys. Energy Procedia , 2014, vol. 56, pp. 172–180. DOI: 10.1016/j.egypro.2014.07.146 . 10. Park K. Development and analysis of ultrasonic assisted friction stir welding process : PhD dissertation. Uni- versity of Michigan, 2009. 125 р. 11. Amini S., Amiri M.R. Study of ultrasonic vibrations’ effect on friction stir welding. International Journal of Advanced Manufacturing Technology , 2014, vol. 73, pp. 127–135. DOI: 10.1007/s00170-014-5806-7. 12. Padhy G.K., Wu C.S., Gao S. Auxiliary energy assisted friction stir welding – status review. Science and Technology of Welding and Joining , 2015, vol. 20 (8), pp. 631–649. DOI: 10.1179/1362171815Y.0000000048. 13. Kumar S., Wu C.S., Zhen S., Ding W. Effect of ultrasonic vibration on welding load, macrostructure, and mechanical properties of Al/Mg alloy joints fabricated by friction stir lap welding. International Journal of Advanced Manufacturing Technology , 2019, vol. 100, iss. 5–8, pp. 1787–1799. DOI: 10.1007/s00170-018-2717-z. 14. Ruilin L., Diqiu H., Luocheng L., Shaoyong Y., Kunyu Y. A study of the temperature field during ultrasonic- assisted friction-stir welding. International Journal of Advanced Manufacturing Technology , 2014, vol. 73 (1–4), pp. 321–327. DOI: 10.1007/s00170-014-5813-8. 15. Muhammad N.A., Wu C.S., Padhy G.K. Review: Progress and trends in ultrasonic vibration assisted friction stir welding. Journal of Harbin Institute of Technology (New Series) , 2018, vol. 25 (3), pp. 16–42. DOI: 10.11916/j. issn.1005-9113.17105. 16. Liu X.C., Wu C.S. Experimental study on ultrasonic vibration enhanced friction stir welding. Proceedings of the 1st International Joint Symposium on Joining and Welding , Osaka, Japan, 2013, pp. 151–154. DOI: 10.1533/978- 1-78242-164-1.151. 17. Strass B., Wagner G., Conrad C., Wolter B., Benfer S., Fürbeth W. Realization of Al/Mg-Hybrid-Joints by ultrasound supported friction stir welding – mechanical properties, microstructure and corrosion behavior. Advanced Materials Research , 2014, vol. 966–967, pp. 521–535. DOI: 10.4028/www.scientific.net/AMR.966-967.521. 18. Liu X.C., Wu C.S., Zhang H., Chen M. Effect of ultrasonic vibration on the friction stir weld quality of aluminium alloy. China Welding (English Edition), 2013, vol. 22 (3), pp. 12–17. 19. Kolubaev E.A., Rubtsov V.E., Ivanov A.N., Psakh’e S.G., Fortuna S.V., Bakshaev V.A., Vasil’ev P.A. Sposob svarki treniem s peremeshivaniem s ul’trazvukovym vozdeistviem [Method of friction welding with mixing with ultrasonic treatment]. Patent RF, no. 2616313, 2017. 20. Tarasov S.Y., Vorontsov A.V., Fortuna S.V., Rubtsov V.E., Krasnoveikin V.A., Kolubaev E.A. Ultrasonic- assisted laser welding on AISI 321 stainless steel. Welding in the World , 2019, vol. 63, iss. 3, pp. 875–886. DOI: 10.1007/s40194-019-00716-1. Conflicts of Interest The authors declare no conflict of interest.  2019 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/ ).