Research of microstructure of molybden doped weldings of oil and gas pipelines

• Autorzy: Pandova Iveta , Rimar Miroslav , Makarenko Valery , Vinnikov Yuri , Mangura Andrey , Zaborowski Tadeusz , Aloshyn Valentyn

Identyfikatory

DOI

10.2478/mspe-2021-0034

• Języki publikacji: EN

Abstrakty

EN

Still existing scientific, technical and technological developments to improve the quality of welded joints of metal pipe structures contain contradictions and uncertainty about the effects of alloying elements, such as molybdenum, mechanical and visco-plastic properties, as well as metallographic component joints. All this indicates the need for a systematic study of these problems for the development of rational metallurgical and technological measures to significantly improve the technological and corrosion-mechanical properties of weld metal. Metallographic studies, using laboratory equipment with high identifying ability, found that the doping of weld metal with molybdenum in the amount of 0.2-0.4% causes fragmentation of ferrite-pearlite structure, including carbides Mn and Fe, and also reduces the number and size of non-metallic inclusions – sulfides, oxides and silicates. Moreover, non-metallic inclusions have a dispersed appearance, which promotes plasticization of the structure, which directly increases the viscous-plastic characteristics and resistance of the metal joints to crack formation. Based on the results of metallographic research, the optimum content in the weld metal of the alloyed element – molybdenum, which is 0.2-0.4%, is determined.

Słowa kluczowe

EN

structure; fracture; corrosion; crystal lattice; non–metallic inclusions

• Wydawca: STE GROUP
• Czasopismo: Management Systems in Production Engineering
• Rocznik: 2021
• Tom: nr 4 (29)
• Strony: 274--279
• Opis fizyczny: Bibliogr. 31 poz., rys.

Twórcy

autor

Pandova Iveta

• Technical University of Kosice Faculty of Manufacturing Technologies Sturova 31, 08001 Presov, Slovakia

• https://orcid.org/0000-0003-1407-779X

autor

Rimar Miroslav

• Technical University of Kosice Faculty of Manufacturing Technologies Sturova 31, 08001 Presov, Slovakia

• https://orcid.org/0000-0002-9818-1668

autor

Makarenko Valery

• Poltava National Technical Yuri Kondratyuk University 24 Pershotravnevyi Ave, 36000 Poltava, Ukraine

• https://orcid.org/0000-0002-9344-2347

autor

Vinnikov Yuri

• Poltava National Technical Yuri Kondratyuk University 24 Pershotravnevyi Ave, 36000 Poltava, Ukraine

• https://orcid.org/0000-0002-2019-221X

autor

Mangura Andrey

• Poltava National Technical Yuri Kondratyuk University 24 Pershotravnevyi Ave, 36000 Poltava, Ukraine

• https://orcid.org/0000-0003-2268-766X

autor

Zaborowski Tadeusz

• Polish Academy of Sciences Stary Rynek 78 Palac Dzialynskich, 61-722, Poznan, Poland

• https://orcid.org/0000-0002-7954-2675

autor

Aloshyn Valentyn

• Sumy State University Faculty of Electronics and Information Technologies 2, Rymskogo-Korsakova st., 40007 Sumy, Ukraine

• https://orcid.org/0000-0003-1667-2648

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).