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undergraduate thesis
Utjecaj temperature popuštanja na mikrostrukturu i tvrdoću CuAlNi legure s prisjetljivosti oblika
Sisak: University of Zagreb, Faculty of Metallurgy, 2022. urn:nbn:hr:115:040026
Polak, Tomislav
University of Zagreb
Faculty of Metallurgy

Institutional repository: Repository of Faculty of Metallurgy University of Zagreb

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Polak, T. (2022). Utjecaj temperature popuštanja na mikrostrukturu i tvrdoću CuAlNi legure s prisjetljivosti oblika (Undergraduate thesis). Sisak: University of Zagreb, Faculty of Metallurgy. Retrieved from https://urn.nsk.hr/urn:nbn:hr:115:040026

Polak, Tomislav. "Utjecaj temperature popuštanja na mikrostrukturu i tvrdoću CuAlNi legure s prisjetljivosti oblika." Undergraduate thesis, University of Zagreb, Faculty of Metallurgy, 2022. https://urn.nsk.hr/urn:nbn:hr:115:040026

Polak, Tomislav. "Utjecaj temperature popuštanja na mikrostrukturu i tvrdoću CuAlNi legure s prisjetljivosti oblika." Undergraduate thesis, University of Zagreb, Faculty of Metallurgy, 2022. https://urn.nsk.hr/urn:nbn:hr:115:040026

Polak, T. (2022). 'Utjecaj temperature popuštanja na mikrostrukturu i tvrdoću CuAlNi legure s prisjetljivosti oblika', Undergraduate thesis, University of Zagreb, Faculty of Metallurgy, accessed 23 November 2024, https://urn.nsk.hr/urn:nbn:hr:115:040026

Polak T. Utjecaj temperature popuštanja na mikrostrukturu i tvrdoću CuAlNi legure s prisjetljivosti oblika [Undergraduate thesis]. Sisak: University of Zagreb, Faculty of Metallurgy; 2022 [cited 2024 November 23] Available at: https://urn.nsk.hr/urn:nbn:hr:115:040026

T. Polak, "Utjecaj temperature popuštanja na mikrostrukturu i tvrdoću CuAlNi legure s prisjetljivosti oblika", Undergraduate thesis, University of Zagreb, Faculty of Metallurgy, Sisak, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:115:040026

Metadata
TitleUtjecaj temperature popuštanja na mikrostrukturu i tvrdoću CuAlNi legure s prisjetljivosti oblika
AuthorTomislav Polak
MentorIvana Ivanić (mentor)
Committee memberStjepan Kožuh (predsjednik povjerenstva)
Committee memberIvana Ivanić (član povjerenstva)
Committee memberLjerka Slokar Benić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Metallurgy
Sisak
Defense date and country2022-09-19, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Metallurgy
Abstract
U ovom radu prikazan je utjecaj temperature popuštanja na mikrostrukturu i tvrdoću CuAlNi legure s prisjetljivosti oblika. Legura kemijskog sastava Cu – 12,8 Al – 4,1 Ni (mas. %) je dobivena iz tehnički čistih elemenata postupkom vertikalnog kontinuiranog lijevanja. Nakon lijevanja, dobivena šipka CuAlNi promjera 8 mm, podvrgnuta je postupku toplinske obrade koji se sastojao od kaljenja na 920 °C ' hlađenje u vodi te popuštanja na 15 °C, 200 °C, 250 °C i 300 °C '/ hlađenje u vodi. Utjecaj temperature popuštanja na mikrostrukturu CuAlNi legure utvrđen je svjetlosnom i pretražnom elektronskom mikroskopijom. Utvrđena je martenzitna mikrostruktura kod svih ispitanih uzoraka te značajni porast zrna, posebice nakon popuštanja. Tvrdoća po Vickersu pokazuje značajno povećanje tvrdoće uzorka nakon popuštanja u odnosu na kaljeno stanje.
Abstract (english)
In this paper, the influence of tempering temperature on the microstructure and hardness of CuAlNi alloy with shape memory effect is presented. Alloy with chemical composition Cu – 12.8 Al – 4.1 Ni (wt. %) was obtained from technically pure elements by the process of vertical continuous casting. After casting, the resulting CuAlNi bar with a diameter of 8 mm was subjected to a heat treatment procedure consisting of solution annealing at 920 °C / cooling in water and tempering at 150 °C, 200 °C, 250 °C and 300 °C '/ cooling in water. The influence of the tempering temperature on the microstructure of the CuAlNi alloy was determined by light and scanning electron microscopy. A martensitic microstructure was found in all tested samples and a significant grain growth was noticed, especially after tempering. The Vickers hardness shows a significant increase in the hardness of the sample after tempering compared to the annealed state.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:115:040026
Study programmeTitle: Undergraduate study program Metallurgy; specializations in: Metallurgical Engineering, Industrial Ecology
Course: Metallurgical Engineering
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka metalurgije (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka metalurgije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2022-09-08 09:10:06