Residual Stresses and Microstructural Features of Rotary-Friction-Welded from Dissimilar Medium Carbon Steels

Priymak, E. Yu.; Boumerzoug, Zakaria; Stepanchukova, A. V.; Ji, Vincent

doi:10.1134/s0031918x20130165

Cited by 9 publications

(4 citation statements)

References 26 publications

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“…A comparatively high fatigue strength, similar to the base material strength, was also found in [15][16][17]. Priymak also measured compressive residual stress at the surface of friction-welded specimens [18].…”

Section: Introductionsupporting

confidence: 70%

Fatigue Strength Assessment of Friction Welds under Consideration of Residual Stress

Uhlenberg,

Baumgartner,

Rößler

et al. 2024

Materials

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A reliable local-fatigue assessment approach for rotary friction-welded components does not yet exist. The scope of this paper is to present test results for the fatigue behaviour of rotary friction-welded solid shafts made of structural steel S355J2G3 (1.0570) and an approach to fatigue assessment considering residual stress. In contrast to fusion-welded joints, components made by rotary friction welding usually contain compressive residual stress near the weld, which can significantly affect the fatigue strength. For this purpose, specimens were welded and characterised, including metallographic micrographs, hardness measurements, and residual stress measurements. The fatigue tests were performed with a constant amplitude loading in tension/compression or torsion with R = −1. All specimens were investigated without machining of the weld flash, either in the as-welded state or after a post-weld stress-relief heat treatment. In addition, the friction welding process and the residual stress formation were analysed using numerical simulation. The characterisation results are integrated into a fatigue assessment approach. Overall, the specimens perform comparatively well in the fatigue tests and the experimentally observed fatigue behaviour is well described using the proposed local approaches.

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Section: Introductionsupporting

confidence: 70%

Fatigue Strength Assessment of Friction Welds under Consideration of Residual Stress

Uhlenberg,

Baumgartner,

Rößler

et al. 2024

Materials

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show abstract

“…The assessment of residual stresses by two different physical methods does not allow to carry out measurements with absolute accuracy [9,10]. The comparison of the measurement results includes both advantages and disadvantages of described methods.…”

Section: Comparing Results Of Measuring Residual Stressesmentioning

confidence: 99%

Analysis of Residual Stresses for Underwater Wet Welding of High Strength Steel

Nikulin

Parshin

Levchenko³

et al. 2023

KEM

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This study describes a perspective using non-destructive testing of stress-strain state joints in underwater wet welding and air. High residual stresses after underwater wet welding may be a possible cause of arising corrosion processes and cold cracking in structures. Assessing residual stresses can introduce additional changes in the technological welding process and subsequent reducing stresses. Analysis of application magnetic anisotropy and X-ray diffraction methods are shown for discovering residual tensile stresses after surfacing on high strength steel. Two complementary methods make it possible to determine the magnitude and features of the distribution of residual welding stresses after underwater wet surfacing and air surfacing.

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“…The heat-affected zone (HAZ) usually has poor mechanical properties with coarse grain size, while the thermomechanical affected zone (TMAZ) and the weld center (WC) have a small grain size. In a study by Priymak et al [3], various tests on rotary friction welded from dissimilar medium carbon steels, including microstructure observations, microhardness measurements, and tensile tests, to obtain information on the distribution of residual stresses in welded samples subjected to heat treatment at 300 and 600°C were conducted. The findings indicated that the TMAZ experienced high compression in residual stress distribution due to microstructural changes during welding.…”

Section: Introductionmentioning

confidence: 99%

A Study of Annealing Effects on the Joints of a Rotary Friction Welds of AISI 1030 Steel

Trung,

Khanh,

Qui

2023

KEM

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This study is concerned with the post-heat treatment of rotational friction welds. AISI 1030 carbon steel parts are welded by rotational friction welding (RFW). The welding process parameters include friction pressure (P1), friction time (T1); Forging pressure (P2), forging time (T2). During the friction phase, the rotational speed is 1450 rpm; after that, the welding parts is stopped immediately and pressed together. The weld samples will be annealed at 650 °C for 4 hours. The change in the properties of the material of a RFW weld joint such as hardness, tensile strength, bending strength as well as grain size when undergone a heat treatment process was investigated. The obtained results show that the annealing process strongly changes the mechanical properties through altering the microstructure of the weld. Particularly, the weld hardness and tensile strength decrease significantly while the bending strength and elongation increase as a result of the increase in grain size and uniformity of the phase distribution. The annealed weld has a hardness reduction of nearly 20% and a tensile strength reduction of about 24% compared to the original weld. The elongation in the tensile test increases from 1.1% for weld specimens to 2.54% for post-heat-treated welds. In the bending test, the maximum load before the appearance of cracks on the specimen increased by about 42% when comparing the post-heat and original weld specimens.

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Residual Stresses and Microstructural Features of Rotary-Friction-Welded from Dissimilar Medium Carbon Steels

Cited by 9 publications

References 26 publications

Fatigue Strength Assessment of Friction Welds under Consideration of Residual Stress

Fatigue Strength Assessment of Friction Welds under Consideration of Residual Stress

Analysis of Residual Stresses for Underwater Wet Welding of High Strength Steel

A Study of Annealing Effects on the Joints of a Rotary Friction Welds of AISI 1030 Steel

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