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master's thesis
Utjecaj kovanja i toplinske obrade na mikrostrukturu i tvrdoću CuAlMn legure s prisjetljivosti oblika
Sisak: University of Zagreb, Faculty of Metallurgy, 2022. urn:nbn:hr:115:964824
Dumenčić, Daniela
University of Zagreb
Faculty of Metallurgy

Institutional repository: Repository of Faculty of Metallurgy University of Zagreb

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Dumenčić, D. (2022). Utjecaj kovanja i toplinske obrade na mikrostrukturu i tvrdoću CuAlMn legure s prisjetljivosti oblika (Master's thesis). Sisak: University of Zagreb, Faculty of Metallurgy. Retrieved from https://urn.nsk.hr/urn:nbn:hr:115:964824

Dumenčić, Daniela. "Utjecaj kovanja i toplinske obrade na mikrostrukturu i tvrdoću CuAlMn legure s prisjetljivosti oblika." Master's thesis, University of Zagreb, Faculty of Metallurgy, 2022. https://urn.nsk.hr/urn:nbn:hr:115:964824

Dumenčić, Daniela. "Utjecaj kovanja i toplinske obrade na mikrostrukturu i tvrdoću CuAlMn legure s prisjetljivosti oblika." Master's thesis, University of Zagreb, Faculty of Metallurgy, 2022. https://urn.nsk.hr/urn:nbn:hr:115:964824

Dumenčić, D. (2022). 'Utjecaj kovanja i toplinske obrade na mikrostrukturu i tvrdoću CuAlMn legure s prisjetljivosti oblika', Master's thesis, University of Zagreb, Faculty of Metallurgy, accessed 23 November 2024, https://urn.nsk.hr/urn:nbn:hr:115:964824

Dumenčić D. Utjecaj kovanja i toplinske obrade na mikrostrukturu i tvrdoću CuAlMn legure s prisjetljivosti oblika [Master's thesis]. Sisak: University of Zagreb, Faculty of Metallurgy; 2022 [cited 2024 November 23] Available at: https://urn.nsk.hr/urn:nbn:hr:115:964824

D. Dumenčić, "Utjecaj kovanja i toplinske obrade na mikrostrukturu i tvrdoću CuAlMn legure s prisjetljivosti oblika", Master's thesis, University of Zagreb, Faculty of Metallurgy, Sisak, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:115:964824

Metadata
TitleUtjecaj kovanja i toplinske obrade na mikrostrukturu i tvrdoću CuAlMn legure s prisjetljivosti oblika
Title (english)The influence of forging and heat treatment on microstructure and hardness of CuAlMn shape memory alloy
AuthorDaniela Dumenčić
MentorIvana Ivanić (mentor)
Committee memberStjepan Kožuh (predsjednik povjerenstva)
Committee memberIvana Ivanić (član povjerenstva)
Committee memberMirko Gojić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Metallurgy
Sisak
Defense date and country2022-10-24, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Metallurgy
Abstract
CuAlMn legure s prisjetljivosti oblika značajne su prvenstveno zbog primjene u elektroindustriji. U diplomskom radu istraživan je utjecaj kovanja i toplinske obrade na mikrostrukturu CuAlMn legure s prisjetljivosti oblika koja je dobivena postupkom lijevanja u grafitnu kokilu te kovanjem u šipke promjera 6,5 mm i 13 mm. Nakon kovanja, dobivene šipke toplinski su obrađene pri temperaturi od 850 ˚C, u trajanju od 30 minuta, a potom hlađene u vodi sobne temperature. Mikrostrukturna karakterizacija uzoraka prije i nakon toplinske obrade provedena je svjetlosnom mikroskopijom (LM) i pretražnom elektronskom mikroskopijom (SEM). Analizom mikrostrukture kod kovanih uzoraka primijećena je dvofazna (α+β) mikrostruktura, dok je na uzorcima koji su toplinski obrađeni vidljiva martenzitna mikrostruktura. Tvrdoća uzoraka se smanjuje kod toplinski obrađenih uzoraka u odnosu na kovane uzorke.
Abstract (english)
CuAlMn shape memory alloys are significant primarily due to their application in the electrical industry. In this paper, the investigation of influence of forging and heat treatment on microstructure of CuAlMn shape memory alloy. The alloy was obtained by casting in a graphite mold, and then forged into bars with a diameter of 6.5 mm and 13 mm. After forging, the obtained bars were heat treated at 850 ˚C for 30 minutes and then cooled in room temperature water. Microstructural characterization of the samples before and after heat treatment was performed by light microscopy (LM) and scanning electronic microscopy (SEM). Analyzing the microstructure of the forged samples a two-phase (α+β) microstructure was revealed, while the heat-treated samples showed a martensitic microstructure. The hardness decreases in heattreated samples in comparison to forged samples.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:115:964824
Study programmeTitle: Graduate study program Metallurgy
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka metalurgije (magistar/magistra inženjer/inženjerka metalurgije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2022-10-12 14:20:52