Metoda modifikacije površine dupleks nerđajućih čelika postupkom boriranja Stručni rad

Glavni sadržaj članka

Ramakrishnan Hariharan
https://orcid.org/0000-0002-9836-7526
Balasundaram Rathinam
https://orcid.org/0000-0002-9836-7526
Baskar Neelakandan
https://orcid.org/0000-0001-7771-4755
Radhakrishnan Beemaraj
https://orcid.org/0000-0002-5070-5653
Chellamuthu Kannan
https://orcid.org/0000-0002-0271-6243

Apstrakt

Ovaj rad prikazije istraživanje procesa boriranja dve vrste nerđajućeg čelika: UNS 32750 super dupleks nerđajući čelik i UNSS 31803 dupleks nerđajući čelik, u cilju poboljšanja osobina materijala i smanjenja mogućnosti katastrofalnih otkaza industrijskih komponenata. Upotreba dupleks nerđajućih čelika postala je raširena u postrojanjima za vađenje nafte i rafinerijama, u pomorstvu i u cevovodima, a zbog njihove povećane otpornosti na koroziju. Međutim ovi materijali su pokazuju slabu otpornost na habanja. Da bi se prevazišao ovaj problem, u ovom radu je korišćen proces borirawa. Procena efekata boriranja na mikrostrukturu i mehanička svojstva izvršena je pomoću skenirajuće elektronske i optičke mikroskopije, testova tvrdoće po Vickersu i testova habanja. Pokazano je da je postupak boriranja u trajanju od  4 sata rezultirao najvećom debljinom boriranog sloja, dajući maksimalnu površinsku tvrdoću super dupleks nerđajućeg čelika UNS 32750 od 1407 HV, odnosno 1201 HV dupleks nerđajućeg čelika UNSS 31803. Otpornosti na habanja boriranih materijala bile su i do 6 puta veće od onih kod netrfetiranih čelika. Pokazalo se da su borirani dupleks materijali pogodniji za proces boriranja jer pokazuju veću otpornost na habanje u poređenju sa super dupleks nerđajućim čelikom, zbog povećane debljine sloja gvozdenog borida.

Detalji članka

Broj časopisa

Rubrika

Inženjerstvo materijala - Metalni materijali

Kako citirati

[1]
R. Hariharan, B. Rathinam, B. Neelakandan, R. Beemaraj, and C. Kannan, “Metoda modifikacije površine dupleks nerđajućih čelika postupkom boriranja: Stručni rad”, Hem Ind, vol. 75, no. 3, pp. 155–166, Jul. 2021, doi: 10.2298/HEMIND210103019H.

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