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Influence of post-welding tempering on mechanical behavior of friction welded joints from medium-carbon steels during tensile test
https://doi.org/10.22349/1994-6716-2020-102-2-40-49
Abstract
The paper presents an analysis of the mechanical behavior of friction samples of welded joints from steels 30G2 (36 Mn 5) and 40 KhN (40Ni Cr 6), made by rotary friction welding (RFW). The influence of various temperature conditions of postweld tempering on the mechanical properties and deformation behavior during uniaxial tensile testing is analyzed. Vulnerabilities where crack nucleation and propagation occurred in specimens with a welded joint were identified. It was found that with this combination of steels, postweld tempering of the welded joint contributes to a decrease in the integral strength characteristics under conditions of static tension along with a significant decrease in the relative longitudinal deformation of the tested samples.
Keywords
rotary friction welding (RFW),
thermomechanical affected zone (TMAZ),
medium carbon steels,
uniaxial tension,
tensile strength,
deformation
Supporting agencies: The reported study was funded by RFBR, project number 19-38-90079.
About the Authors
A. S. Atamashkin
Orenburg State University
Russian Federation
13 Pobedy Ave, 460018, Orenburg
Russian Federation
13 Pobedy Ave, 460018, Orenburg
E. Yu. Priymak
Orenburg State University;
Drill Industries
Russian Federation
Russian Federation
Cand Sc. (Eng)
13 Pobedy Ave, 460018, Orenburg;
118 Pobedy Ave, 460026, Orenburg
N. V. Firsova
Orsk Institute of Humanities and Technology, Branch of the Orenburg State University
Russian Federation
Russian Federation
Cand Sc. (Eng)
15A Mira Ave, 462403, Orsk
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Review
For citations:
Atamashkin A.S., Priymak E.Yu., Firsova N.V. Influence of post-welding tempering on mechanical behavior of friction welded joints from medium-carbon steels during tensile test. Voprosy Materialovedeniya. 2020;(2(102)):40-49. (In Russ.) https://doi.org/10.22349/1994-6716-2020-102-2-40-49
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