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master's thesis
ODREĐIVANJE KRITIČNE TEMPERATURE POJAVE JAMIČASTE KOROZIJE KOD ZAVARENIH DUPLEKS-DUPLEKS ČELIKA
2020. urn:nbn:hr:228:366056
Jakovac, Marko
University of Split
University Department of Professional Studies

Cite this document

Jakovac, M. (2020). ODREĐIVANJE KRITIČNE TEMPERATURE POJAVE JAMIČASTE KOROZIJE KOD ZAVARENIH DUPLEKS-DUPLEKS ČELIKA (Master's thesis). Retrieved from https://urn.nsk.hr/urn:nbn:hr:228:366056

Jakovac, Marko. "ODREĐIVANJE KRITIČNE TEMPERATURE POJAVE JAMIČASTE KOROZIJE KOD ZAVARENIH DUPLEKS-DUPLEKS ČELIKA." Master's thesis, University of Split, University Department of Professional Studies, 2020. https://urn.nsk.hr/urn:nbn:hr:228:366056

Jakovac, Marko. "ODREĐIVANJE KRITIČNE TEMPERATURE POJAVE JAMIČASTE KOROZIJE KOD ZAVARENIH DUPLEKS-DUPLEKS ČELIKA." Master's thesis, University of Split, University Department of Professional Studies, 2020. https://urn.nsk.hr/urn:nbn:hr:228:366056

Jakovac, M. (2020). 'ODREĐIVANJE KRITIČNE TEMPERATURE POJAVE JAMIČASTE KOROZIJE KOD ZAVARENIH DUPLEKS-DUPLEKS ČELIKA', Master's thesis, University of Split, University Department of Professional Studies, accessed 24 May 2022, https://urn.nsk.hr/urn:nbn:hr:228:366056

Jakovac M. ODREĐIVANJE KRITIČNE TEMPERATURE POJAVE JAMIČASTE KOROZIJE KOD ZAVARENIH DUPLEKS-DUPLEKS ČELIKA [Master's thesis]. Split: University of Split, University Department of Professional Studies; 2020 [cited 2022 May 24] Available at: https://urn.nsk.hr/urn:nbn:hr:228:366056

M. Jakovac, "ODREĐIVANJE KRITIČNE TEMPERATURE POJAVE JAMIČASTE KOROZIJE KOD ZAVARENIH DUPLEKS-DUPLEKS ČELIKA", Master's thesis, University of Split, University Department of Professional Studies, Split, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:228:366056

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Metadata
TitleODREĐIVANJE KRITIČNE TEMPERATURE POJAVE JAMIČASTE KOROZIJE KOD ZAVARENIH DUPLEKS-DUPLEKS ČELIKA
Title (english)DETERMINATION OF CRITICAL TEMPERATURE FOR PITTING CORROSION OCCURRENCE AT WEDDED DUPLEX-DUPLEX STEELS
AuthorMarko Jakovac
MentorPetar Ljumović (mentor)
Committee memberIgor Gabrić (član povjerenstva)
Committee memberSlaven Šitić (član povjerenstva)
GranterUniversity of Split
University Department of Professional Studies
Split
Defense date and country2020-11-13, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Tema ovog rada je određivanje kritične temperature kod koje dolazi do pojave jamičaste korozije kod zavarenih dupleks čelika. Rad se dijeli na dva dijela. U prvom dijelu obrađen je teoretski dio, a drugi dio rada odnosi se na praktični dio. U prvom, teoretskom dijelu rada obrađeni su nehrđajući čelici te podjela istih. Naglasak je stavljen na dupleks čelike. Opisan je njihov kemijski sastav i mehanička obrada. Dio rada posvećen je i korozijskoj postojanosti nehrđajućih, odnosno dupleks čelika. Posebno je obrađena jamičasta korozija te uvjeti njenog nastajanja kao i mjere zaštite od nastajanja iste. Opisano je i zavarivanje dupleks čelika te koji problemi mogu nastati nakon ovog postupka. U eksperimentalnom dijelu rada opisan je proces zavarivanja uzoraka kao i mehanička obrada istih nakon zavarivanja. Analizirana je mikrostruktura uzoraka te austenitno-feritni omjeri. Provedena su i ispitivanja otpornosti na jamičastu koroziju te analiza rezultata.
Abstract (english)
The theme of this paper is determination of the chritical temperature at which pitting corrosion appears in welded duplex steels. The paper consists from two parts. The first part of the paper is theoretical, while the second one refers to the experimental. The first, theoretical part, describes stainless steel sand their classification. Sp ecial emphasis is on duplex steel. Their chemical composition and their mechanical processing are described. Part of the paper is also dedicated to the corrosion resistance of duplex steels. Pitting corrosion and the conditions of its occurrence as well as measures for protection against it have been specially treated. Also, duplex steel welding and problems that may occur after this procedure are described. The experimental part of the paper describes welding process of the samples as well as the their mechanical processing after welding. The microstructure of the samples and austeniticferritic ratios were analyzed. Pitting corrosion resistance tests and analysis of results were also performed.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:228:366056
Study programmeTitle: Mechanical Engineering – specialist graduate - professional
Study programme type: professional
Study level: specialist graduate
Academic / professional title: stručni/a specijalist/ specijalistica inženjer/ inženjerka strojarstva (stručni/a specijalist/ specijalistica inženjer/ inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-11-17 07:37:59