Utjecaj stupnja deformacije na otpornost prema koroziji kod austenitnog nehrđajućeg čelika.

master's thesis

• Title (english): Effect of deformation stage on corrosion resistance in austenitic stainless steel
• Author: Denis Vidović
• Mentor: Zdenka Keran (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2020-12-04, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Production Mechanical Engineering

Abstract

Tema ovog diplomskog rada je Utjecaj stupnja deformacije na otpornost prema koroziji kod austenitnog nehrđajućeg čelika. Zbog široke primjene nehrđajućih čelika koji se između ostalog i oblikuju deformiranjem, potrebno je poznavati utjecaj stupnja deformacije na samu otpornost čelika na koroziju. Pomoću dodatne literature i dosad stečenog znanja tokom studija provedena je klasifikacija te su opisane vrste nehrđajućih čelika. Opisane su vrste korozije kojima su podložni nehrđajući čelici te je istražen utjecaj stupnja deformacije na otpornost nehrđajućih čelika na koroziju. Također, opisane su određene metode kojima se ispituje korozijska postojanost čeličnih materijala. U sklopu praktičnog dijela rada elektrokemijskim ispitivanjima istosmjernom strujom provedeno je ispitivanje pripremljenih uzoraka različitih stupnjeva deformacije i različitih kvaliteta obrade površine na koroziju. Dobiveni rezultati prikazani su i analizirani grafički i tablično te su shodno tome doneseni određeni zaključci.

Abstract (english)

The subject of this master thesis is to examine effect of deformation stage on corrosion resistance in austenitic stainless steel. Due to the wide application of stainless steels, which are, among other things, formed by deformation, it is necessary to consider the influence of the deformation stage on corrosion resistance of steel. With the help of additional literature and knowledge acquired during the studies, the stainless steel classification is performed. Types of corrosion on which stainless steels are sensitive, as well as effect of deformation stages on corrosion resistance of stainless steels are investigated. Also, ceratin corrosion resistance measuring methods are explained. As part of the practical part of work, direct current electrochemical tests of corrosion resistance were performed on samples deformated by different deformation stages and treated by different surface finish. Results are shown and analyzed by tables and diagrams and some conlusions are given based on test results.

• Keywords: korozija; nehrđajući čelici; oblikovanje deformiranje; stupanj deformacije
• Keywords (english): corrosion; stainless steel; metal forming; deformation stage
• Language: croatian
• URN:NBN: urn:nbn:hr:235:238480
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-11-26 21:22:49