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undergraduate thesis
Utjecaj temperature i vremena boriranja čelika X90CrMoV18 na debljinu i tvrdoću boridnog sloja
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2023. urn:nbn:hr:235:319356
Petrlić, Leonard
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

Cite this document

Petrlić, L. (2023). Utjecaj temperature i vremena boriranja čelika X90CrMoV18 na debljinu i tvrdoću boridnog sloja (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:319356

Petrlić, Leonard. "Utjecaj temperature i vremena boriranja čelika X90CrMoV18 na debljinu i tvrdoću boridnog sloja." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2023. https://urn.nsk.hr/urn:nbn:hr:235:319356

Petrlić, Leonard. "Utjecaj temperature i vremena boriranja čelika X90CrMoV18 na debljinu i tvrdoću boridnog sloja." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2023. https://urn.nsk.hr/urn:nbn:hr:235:319356

Petrlić, L. (2023). 'Utjecaj temperature i vremena boriranja čelika X90CrMoV18 na debljinu i tvrdoću boridnog sloja', Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 26 November 2024, https://urn.nsk.hr/urn:nbn:hr:235:319356

Petrlić L. Utjecaj temperature i vremena boriranja čelika X90CrMoV18 na debljinu i tvrdoću boridnog sloja [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2023 [cited 2024 November 26] Available at: https://urn.nsk.hr/urn:nbn:hr:235:319356

L. Petrlić, "Utjecaj temperature i vremena boriranja čelika X90CrMoV18 na debljinu i tvrdoću boridnog sloja", Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:235:319356

Metadata
TitleUtjecaj temperature i vremena boriranja čelika X90CrMoV18 na debljinu i tvrdoću boridnog sloja
Title (english)Effect of temperature and time of boriding of steel X90CrMoV18 on the thickness and hardness of the boride layer
AuthorLeonard Petrlić
MentorDarko Landek (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2023-03-02, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
U teoretskom dijelu rada opisan je postupak boriranja u prašku te karakteristike i rast boridnih slojeva. Objašnjeno je što sve utječe na mikrostrukturu, debljinu i svojstva boridnih slojeva. Definirani su martenzitni nehrđajući čelici te su navedena svojstva, primjena i toplinska obrada martenzitnog nehrđajućeg čelika X90CrMoV18. U eksperimentalnom dijelu rada opisan je postupak pripreme i izvođenja boriranja čelika X90CrMoV18. Poslije boriranja uzorci su metalografski pripremljeni u svrhu određivanja debljine, mikrostrukture i mikrotvrdoće boridnog sloja. Upotrebom regresijske analize postavljen je matematički model za predviđanje brzine rasta boridnog sloja ovisne o temperaturi i vremenu boriranja. Provedena su tri naknadna boriranja i ispitivanje debljine boridnog sloja za validaciju matematičkog modela. Postavljeni matematički model predvidio je eksperimentalno određene debljine boridnog sloja s relativnom pogreškom manjom od 7 %.
Abstract (english)
In the theoretical section of the work, the proces of powder boriding and the characteristics of boride layers in terms of morphology and growth are described. The factors influencing the microstructure, thickness and properties of boride layers are thoroughly examined. The concept of martensitic stainless steels is explicated, and the properties, applications and heat treatment of the X90CrMoV18 martensitic stainless steel are also presented. In the experimental section, the procedures for preparing and executing the boriding of X90CrMoV18 steel are outlined. The samples were then subjected to metallographic preparation to assess the thickness, microstructure and microhardness of the boride layer. By utilizing regression analysis, a mathematical model was established to predict the rate of growth of the boride layer as a function of temperature and boriding duration. Three additional boronizing treatments were performed and the thickness of the boride layer was measured to validate the mathematical model. The mathematical model predicted the experimentally determined thickness of the boride layer with a relative error of less than 7%.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:319356
Study programmeTitle: Mechanical Engineering; specializations in: Design, Process and Energy Engineering, Production Engineering, Engineering Modelling and Computer Simulation, Marine Engineering, Industrial Engineering and Management, Materials Engineering
Course: Materials Engineering
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2023-02-25 15:38:48