Structure, mechanical properties and corrosion resistance of nanocomposite coatings deposited by PVD technology onto the X6CrNiMoTi17-12-2 and X40CrMoV5-1 steel substrates

Lukaszkowicz, K.; Sondor, Jozef; Kříž, Antonín; Pancielejko, M.

doi:10.1007/s10853-009-4140-1

Cited by 39 publications

(30 citation statements)

References 22 publications

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“…a diagram does not cover in its range material of such high content of nickel (clearly shows a plain austenite structure) by using nickel covered electrodes Nakon izračunavanja ekvivalenta hroma i nikla (formula 1, 2) i primene rezultata na dijagramu, dobijeni su sledeći podaci: mešovita struktura austenit-ferit-martenzit sa približnom vrednošću ferita od 10% primenom dupleks punjene žice dijagram ne pokriva u njegovom opsegu materijale sa tako visokim sadržajem nikla (jasno pokazuje jednostavnu strukturu austenita) korišćenjem niklovih obloženih elektroda Creq= Cr+Mo+1,5Si+0,5Nb (1) Nieq=Ni+30C+0,5Mn (2) [3] It is necessary to point that the Schaeffler's diagram relates to the constant cooling conditions of the weld, thus a real result may considerably differ. Above differences result from the dynamics of a welding process, and particularly an influence of heat which is difficult to predict, and the foremost conditions of cooling the weld [8][9][10][11].…”

Section: Fig 1 the Schaeffler's Diagram [17]mentioning

confidence: 99%

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Technology of welding joints mixed with duplex steel

Słania

Krawczyk

Masłoń

2017

Zavarivanje i zavarene konstrukcije

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Ključne reči: zavarivanje, dupleks čelici, mešani spojevi Key words: welding, duplex steel, mixed jointsResults of the examinations of sample plates of mixed joints with the duplex steel were discussed. Examinations were taken on the sample plates of mixed joints of sheet plates type P355NL1 and X2CrNiMoN22-5-3 welded by the flux-cored wire DW-329A by the Kobelco company of the following category T 22 9 3 NL RC/M3 in the gas shroud M21 (Ar+18%CO2) (plate no.1), and nickel covered electrodes E Ni 6082 by the Böhler company (plate no. 2). Results of the side bend test of welded joint, transverse tensile test, stretching of the weld metal, impact strength, micro and macroscopic metallographic examinations, and measurements of the delta ferrite content were presented.Diskutovano je o rezultatima ispitivanja uzoraka ploča mešanih spojeva sa dupleks čelikom. Ispitivanja su sprovedena na pločastim uzorcima mešanih spojeva od limova tipa P355NL1 i X2CrNiMoN22-5-3 zavarenih punjenom žicom DV-329A kompanije Kobelco iz sledeće kategorije T 22 9 3 NL RC / M3 u zaštiti gasne mešavine M21 (Ar + 18% CO2) (ploča br. 1) i obloženom elektrodom od nikla E Ni 6082 kompanije Bohler (ploča broj 2). Prikazani su rezultati ispitivanja bočnog savijanja zavarenog spoja, poprečnog zatezanja, istezanja metala šava, udarne žilavosti, mikro i makroskopskih metalografskih pregleda i merenja sadržaja delta ferita.

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Section: Fig 1 the Schaeffler's Diagram [17]mentioning

confidence: 99%

“…Gore pomenute razlike su rezultat dinamike procesa zavarivanja, a posebno uticaja toplote što se teško predviđa, kao i najvažniji uslovi za hlađenje šava [8][9][10][11].…”

Section: Technology Of Weldingunclassified

Technology of welding joints mixed with duplex steel

Słania

Krawczyk

Masłoń

2017

Zavarivanje i zavarene konstrukcije

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“…The outcome of correct execution of the experiment design are the output quantities, called "resultant factors". It has been found on the basis of an analysis of professional literature and the authors' own research [13][14][15][16][17][18][19] that the operational factors that have a significant influence on durability of the rail include the load, skid and speed [20][21][22][23][24][25][26][27].…”

Section: Testing Conditions and Proceduresmentioning

confidence: 99%

Quantitative and Qualitative Comparison of Tribological Properties of Railway Rails with and without Heat Treatment

Bąkowski¹,

Piwnik²

2016

Archives of Metallurgy and Materials

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The changes occurring in the structure of materials during their work are extremely significant from the point of view of extending the life of the railway track material. During the operation of rails, fatigue wear occurs, whose effects are dangerous. In order to prevent fatigue wear, it is necessary to get to know the mechanism of its formation and, in particular, the changes it causes in materials [1].The elements of a railway track structure which directly come into contact with the wheels of railway vehicles are its rails. Their condition determines to a large extent the safety of railway transport. The condition of rails is determined by, inter alia, the wear processes and the selection of materials from which the rails are made, appropriate to the operating conditions [2]. The application of inappropriate materials for rails increases their wear and, consequently, lowers safety on railroads, while increasing the costs incurred by railway operators in connection with repairs [3].Presently, the largest problem is to keep balance between abrasive wear (vertical and side wear -occurring in the rails) and fatigue wear, the latter appearing in the form of contactfatigue damage, leading to chipping of the surface, or even to cross cracks [4].Due to a wide scope of the problem raised, the focus is on the question of durability and reliability of the currently used railway rails.A quantitative analysis of products generated in the rolling-sliding contact and their computer processing are important tools in the examination of wear products. They allow us to identify the wear mechanism quickly and to evaluate the degree of the tribological system wear.To sum up, the aim of this study is an attempt to explain the cause-effect relation between the influence of operational parameters and the wear of the wheel-rail contact zone, where fatigue processes are initiated. This way, getting to know and defining the nature of the phenomenon enables determining of the element's work reliability (appropriate selection of material, depending on the operational conditions). To achieve the aims planned, laboratory tests were made, in which the most significant operational parameters occurring in the real object and influencing the durability of the wheel-rail couple were reflected [5]. For this purpose, a dimensional analysis was applied, which reflects the real conditions presnt in this pivotal place, i.e. the contact point. A specific feature of laboratory tests is that it is possible to better control the direct influence of one selected factor than in the real operational conditions [6]. Material and research methodPearlitic steels are the materials most often used for producing rails. Tests were made using specimens of heat treated rails (HT) and rails without heat treatment (WHT), made of pearlitic steel R260 with a chemical composition and mechanical properties compliant with the UIC 860 standard [8]. In the tests, products of wear generated in the friction couple in laboratory conditions, from both, heat treated rails (WDHT...

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“…Above differences result from the dynamics of a welding process, and particularly an influence of heat which is difficult to predict, and the foremost conditions of cooling the weld [8][9][10][11].…”

Section: Properties Chemical Composition Of Materialsmentioning

confidence: 99%

Technology of Welding Joints Mixed with Duplex Steel

Słania

Krawczyk

Masłoń

2016

Archives of Metallurgy and Materials

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Technology of weldIng joInTs mIxed wITh duPlex sTeelResults of the examinations of sample plates of mixed joints with the duplex steel were discussed. Examinations were taken on the sample plates of mixed joints of sheet plates type P355NL1 and X2CrNiMoN22-5-3 welded by the flux-cored wire DW-329A by the Kobelco company of the following category T 22 9 3 NL RC/M3 in the gas shroud M21 (Ar+18%CO2) (plate no.1), and nickel covered electrodes E Ni 6082 by the Böhler company (plate no. 2). Results of the side bend test of welded joint, transverse tensile test, stretching of the weld metal, impact strength, micro and macroscopic metallographic examinations, and measurements of the delta ferrite content were presented.

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Structure, mechanical properties and corrosion resistance of nanocomposite coatings deposited by PVD technology onto the X6CrNiMoTi17-12-2 and X40CrMoV5-1 steel substrates

Cited by 39 publications

References 22 publications

Technology of welding joints mixed with duplex steel

Technology of welding joints mixed with duplex steel

Quantitative and Qualitative Comparison of Tribological Properties of Railway Rails with and without Heat Treatment

Technology of Welding Joints Mixed with Duplex Steel

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