Comparative analysis of structural state of welded joints rails using method of Barkhausen effect and ultrasound

Balanovsky, A. E.; Shtayger, M. G.; Kondra'ev, V. V.; Karlina, A. I.; Говорков, А. С.

doi:10.1088/1742-6596/1118/1/012006

Cited by 12 publications

(24 citation statements)

References 3 publications

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“…Rail pearlite steels are used for obtaining continuous welded rail at the railroad transport. Continuous welded pearlite rails (CWR) are widely used at railroads, where flash butt welding is the main method of connection [7][8][9][10][11][12][13]. Welded joint is the most critical area, because its destruction was observed in many researches [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Welded joint is the most critical area, because its destruction was observed in many researches [8][9][10]. There are a lot of works dedicated to welding technological features [8][9][10][11][12][13], but small amount of researches is devoted to examination of pearlite structure in the heat-affected zone (HAZ) of rail welded joint. The results of electron microscopy of pearlite structure in HAZ are presented in the works [7,9] and good prospects of this research method are displayed.…”

Section: Introductionmentioning

confidence: 99%

“…The methods which are usually used in conventional optical microscopy are strongly restricted by resolution ability of optical microscopes and cannot be used for measuring the interlamellar distance less than 0.2 μm in modern rail steels [7][8][9][10][11][12]. At the same time, more accessible methods for examination of pearlite structure can be suggested, e.g.…”

Section: Introductionmentioning

confidence: 99%

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Determination of rail steel structural elements via the method of atomic force microscopy

Balanovskiy¹,

Shtaiger²,

Kondratyev³

et al. 2022

cisisr

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The distance between pearlite plates is an important parameter for control of ductility and deformation strengthening of carbon steels. Most methods of optical end electronic microscopy for measuring the distances between cementite and pearlite plates in pearlite steels make definite complications when applying to high-dispersed microstructures. At present time rail steels with pearlite structure are fabricated with interlamellar distance 60-130 nm. This research used atomic force microscopy (AFM) for measuring interlamellar distances of pearlite structure in the heat-affected zone (HAZ) of rail welded joint. Qualitative evaluation of cementite and ferrite plates thickness was obtained for the first time, depending on location relating to a rail weld fusion line. The input of cementite plates in strength on the base of Hall-Petch equation was considered. Influence of the relationship between the size of pearlite colonies d p and thickness of cementite plates t c on metal destruction stress of a HAZ welded joint was assessed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Determination of rail steel structural elements via the method of atomic force microscopy

Balanovskiy¹,

Shtaiger²,

Kondratyev³

et al. 2022

cisisr

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show abstract

“…Accordingly, the number of rail breaks in the weld area increases. This determines the relevance of improving the methods of restoring damaged rails and improving their operational properties [10,11]. One of the ways of restoration is electric arc surfacing [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Electric Arc Surfacing of Defective Plots of Rails in the Area of Electrocontact Welded Joint

Nezhivlyak

Grechneva³

2019

MATEC Web Conf.

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One of the main causes for the failure of the rails of a continuous joint made by electric contact welding is defects in collapse and wear in the joint zone. We address the usage of electric arc surfacing to repair defective rails. The structure and hardness are studied of the defective areas of rails recovered by electric arc surfacing performed in one and two layers. Static tests and fatigue tests of pilot samples of rails with eliminated defects were carried out. The pilot samples with defects eliminated by electric arc surfacing meet the criteria of static strength to the same degree as the rail samples without surfacing. The surfacing technology that we examined should be adjusted by applying preheating to reduce the cooling rate of metal in the weld zone. Fatigue tests showed a positive effect from surfacing at the wear sites in the welded joint. Performance tests confirm that electric arc surfacing is promising to eliminate defects in the collapse and wear of the rails in the area of the electric contact welded joint.

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“…Accordingly, the number of rail breaks in the area of welds increases [1]. This determines the importance of developing the methods of repairing damaged rails and improving their operational properties [11,12]. One of the ways of repairing is electric arc surfacing [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Repairing Crumpling and Wear Defects of Rails in the Zone of Electrocontact Welded Joints by Electric Arc Surfacing

Nezhivlyak¹,

Nezhivlyak²,

Grechneva³

2019

Proceedings of the International Conference on Aviamechanical Engineering and Transport (AviaENT 2019)

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Comparative analysis of structural state of welded joints rails using method of Barkhausen effect and ultrasound

Cited by 12 publications

References 3 publications

Determination of rail steel structural elements via the method of atomic force microscopy

Determination of rail steel structural elements via the method of atomic force microscopy

Electric Arc Surfacing of Defective Plots of Rails in the Area of Electrocontact Welded Joint

Repairing Crumpling and Wear Defects of Rails in the Zone of Electrocontact Welded Joints by Electric Arc Surfacing

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