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master's thesis
Termodinamičko modeliranje Cu-Al-Mn-Ag legura
Sisak: University of Zagreb, Faculty of Metallurgy, 2021. urn:nbn:hr:115:247499
Mlinarić, Franko
University of Zagreb
Faculty of Metallurgy

Institutional repository: Repository of Faculty of Metallurgy University of Zagreb

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Mlinarić, F. (2021). Termodinamičko modeliranje Cu-Al-Mn-Ag legura (Master's thesis). Sisak: University of Zagreb, Faculty of Metallurgy. Retrieved from https://urn.nsk.hr/urn:nbn:hr:115:247499

Mlinarić, Franko. "Termodinamičko modeliranje Cu-Al-Mn-Ag legura." Master's thesis, University of Zagreb, Faculty of Metallurgy, 2021. https://urn.nsk.hr/urn:nbn:hr:115:247499

Mlinarić, Franko. "Termodinamičko modeliranje Cu-Al-Mn-Ag legura." Master's thesis, University of Zagreb, Faculty of Metallurgy, 2021. https://urn.nsk.hr/urn:nbn:hr:115:247499

Mlinarić, F. (2021). 'Termodinamičko modeliranje Cu-Al-Mn-Ag legura', Master's thesis, University of Zagreb, Faculty of Metallurgy, accessed 27 December 2024, https://urn.nsk.hr/urn:nbn:hr:115:247499

Mlinarić F. Termodinamičko modeliranje Cu-Al-Mn-Ag legura [Master's thesis]. Sisak: University of Zagreb, Faculty of Metallurgy; 2021 [cited 2024 December 27] Available at: https://urn.nsk.hr/urn:nbn:hr:115:247499

F. Mlinarić, "Termodinamičko modeliranje Cu-Al-Mn-Ag legura", Master's thesis, University of Zagreb, Faculty of Metallurgy, Sisak, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:115:247499

Metadata
TitleTermodinamičko modeliranje Cu-Al-Mn-Ag legura
Title (english)Thermodinamic modelling of Cu-Al-Mn-Ag alloys
AuthorFranko Mlinarić
MentorIvan Brnardić (mentor)
Committee memberAnita Štrkalj (predsjednik povjerenstva)
Committee memberIvan Brnardić (član povjerenstva)
Committee memberTamara Holjevac Grgurić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Metallurgy
Sisak
Defense date and country2021-07-22, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Metallurgy
Abstract
Cu-Al-Mn legure s prisjetljivošću oblika (Cu-SMA) sve se više koriste kao zamjena vrlo skupim legurama na bazi Ni-Ti, nitinola, no uglavnom u području elektronike i drugih industrija, nešto manje u bioinženjerstvu, s obzirom da biokompatibilnost nitinola još uvijek nema kvalitetnu zamjenu. Efekt prisljetljivosti oblika posljedica je bezdifuzijske martenzitne transformacije, koja podrazumjeva rekristalizacijski proces u čvrstom stanju. Osnova svih SMA legura na bazi bakra su binarni sustavi Cu-Al i Cu-Zn te se dodavanjem daljnjih komponenti definiraju svojstva prisjetljivosti oblika (SE), mehanička svojstva i temperature transformacija. Dodavanjem mangana osnovnoj binarnoj Cu-Al leguri,proširuje se područje -faze, a time se povećava duktilnost materijala, kao i svojstvo hladnogdeformiranja materijala. U ovom radu istražen je utjecaj srebra na mikrostrukturu i temperature faznih transformacija ternarnih Cu-Al-Mn legura. Cu-Al-Mn-Ag legure pripremljene su taljenjem u elektrolučnoj peći. Proveden je termodinamički proračun programom Thermo-Calc te su određene temperature transformacija Cu-Al-Mn-Ag legura, dinamičkim mjerenjima kroz 5 ciklusa zagrijavanja/hlađenja. Mikrostrukturna ispitivanja provedena su skenirajućom elektronskom mikroskopijom(SEM). Rezultati mikrostrukture korelirani su s promjenom sastava Cu-Al-Mn-Ag legure i udjelom srebra te pomakom temperatura transformacija.
Abstract (english)
Cu-SM Ashape memory alloys became very attractive for commercial use and they are frequently used instead of very expensive Ni-Ti alloy,mostly in electronic and other industries due to still irreplaceable biocompatible properties of nitinol. Shape memory effect is a consequence of the diffusionless martensitic transformation, which implies a change of crystal structure. All Cu-SMA alloys are based on binary Cu-Al and Cu-Zn systems. Addition of manganese to binary Cu-Al alloy, broadens-phase region, increases ductility and cold workability of material. In this paper, the effect of silver addition on the microstructure and transformation temperatures of Cu-Al-Mn alloys was investigated. Cu-Al-Mn-Ag alloys were prepared by melting in the electric-arc furnace. Thermodynamic calculation and solidification mechanism was performed by software Thermo-Calc 5 and transformation temperatures of Cu-Al-Mn-Ag alloys were carried out through two dynamic cycles in DSC. Microstructural investigations were performed by scanning electron microscopy (SEM). Microstructural results were correlated with silver content in Cu-Al-Mn-Ag alloy as well as transformation temperatures.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:115:247499
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 on2021-07-22 11:35:43