Influence of Forging Force on Tensile Strength of the 30KhGSA/40KhMFA Steels Welded Joints Made by Rotary Friction Welding

Abstract:

This paper presents studies of welded joints of steels 30KhGSA and 40KhMFA made by rotary friction welding. The influence of the forging force on the microstructure and tensile properties of standard specimens and specimens with a notch in the contact zone is analyzed. The results of measuring the microhardness and fractogram of the fracture surface are presented. It has been established that in the selected range of forging forces, the strength of the contact zone is higher than other sections of the thermomechanical affected zone and the base metal of the materials to be welded. In this case, the maximum strength of the contact zone occurs at lower values ​​of the forging force due to the formation of common grains along the contact line as a result of the process of mutual volumetric recrystallization.

• Periodical: Key Engineering Materials (Volume 910)
• Pages: 180-186
• DOI: https://doi.org/10.4028/p-1489qi
• Online since: February 2022
• Authors: Elena Kuzmina, Elena Priymak*, Nadezhda Firsova
• Keywords: Fracture Mechanism, Microhardness, Microstructure, Rotary Friction Welding (RFW), Tensile Strength, Thermomechanical Affected Zone (TMAZ), Welded Joint

References

[1] A. Kurt, I. Uygur, U. Paylasan, Effect of friction welding parameters on mechanical and microstructural properties of dissimilar AISI 1010-ASTM B22 joints, Welding journal. 90 (2011) 102–106.

[2] S. Meshram, T. Mohandas, G.M. Reddy Friction welding of dissimilar pure metals, J Mater Process Technol. 184 (2007) 330–337.

DOI: 10.1016/j.jmatprotec.2006.11.123

[3] E.P. Alves, Neto F. Piorino, C.Y. An Welding of AA1050 aluminum with AISI 304 stainless steel by rotary friction welding process, Journal of Aerospace Technology Management. 2 (2010) 301–306.

DOI: 10.5028/jatm.2010.02037110

[4] E.l. Bouarroudj, S. Chikh, S. Abdi, D. Miroud, Thermal analysis during a rotational friction welding, Appl Therm Eng. 110 (2017) 1543–1553.

DOI: 10.1016/j.applthermaleng.2016.09.067

[5] G. Verma, S. Kumar and B. R. Bundel, A Research paper on the Comparison of Weld Strength of Friction Welding of Different Materials at two Different RPM, International Journal of Mechanical Engineering and Technology. 7 (2016) 123-127.

[6] P. Venkat Koushik, D. Avinash, Experimental Investigation of Friction Welding using Aluminium with Mild Steel, International Research Journal of Engineering and Technology. 3(12) (2016) 680-685.

[7] H.E. Emre, R. Kaçar, Fatigue Behaviours of Friction Welded Drill Pipes, Journal of the Faculty of Engineering and Architecture of Gazi University. 28 (2), (2013) 417-426.

[8] E.Yu. Priymak, A.S. Atamashkin, E.A. Kuzmina, E.S. Tulibaev, The use of rotational friction welding for manufacture of exploration drill pipes: Industrial experience and research, Chernye Metally. 4 (2020) 37-42.

DOI: 10.17580/chm.2021.05.06

[9] S.T. Selvamani, K. Palanikumar, Optimizing the friction welding parameters to attain maximum tensile strength in AISI 1035 grade carbon steel rods, Measurement. 53 (2014) 10-21.

DOI: 10.1016/j.measurement.2014.03.008

[10] N.O. Zdemira, F. Sarsılmaz, A. Hascalık, Effect of rotational speed on the interface properties of friction- welded AISI 304L to 4340 steel, Materials and Design. 28 (2007) 301-307.

DOI: 10.1016/j.matdes.2005.06.011

[11] E.S. Karakozov, Pressure welding of metals, Mashinostroenie, Moskva, (1986).

[12] E.Y. Priymak, I.L. Yakovleva, N.A. Tereshchenko, A.V. Stepanchukova, A.N. Morozova, Evolution of the Structure and Mechanism of the Formation of Welded Joints of Medium-Carbon Steels upon Rotary Friction Welding, Physics of Metals and Metallography. 120 (11) (2019) 1091–1096.

DOI: 10.1134/s0031918x19110127