Značajna plastična deformacija postupkom kutne ekstruzije

undergraduate thesis

• Title (english): Severe plastic deformation by Equal Channel process
• Author: Mirko Rožman
• Mentor: Zdenka Keran (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2016-09-21, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Neprestanim napretkom i razvojem znanosti te zbog sve rigoroznijih zahtjeva tehnologije, javlja se izrazita potreba za novim materijalima, boljih mehaničkih svojstava, a istovremeno male mase. Istraživanja poboljšavanja mehaničkih svojstava plastičnom deformacijom dovela su do otkrivanja postupaka značajne plastične deformacije (eng. Severe Plastic Deformation, SPD). Kutna ekstruzija najzastupljeniji je od postupaka značajne plastične deformacije, kojim se obrađuju metalni predmeti u svrhu postizanja sitnozrnate mikrostrukture, a samim time i boljih mehaničkih svojstava materijala i odabrana je za temu ovoga rada. U radu je detaljno pojašnjen princip značajne plastične deformacije i neki od postupaka. Posebna pozornost posvećena je postupku kutne ekstruzije, alatima potrebnima za njegovo izvođenje, režimima obrade te promjenama na materijalu koji se obrađuje.

Abstract (english)

With the continuous progress and development of science and as a result of stricter technology requirements, a need for new lightweight materials with better mechanical properties has occured. Researches of improving mechanical properties by plastic deformation have brought up to invention of severe plastic deformation (SPD) processes. Equal channel angular pressing (ECAP) is one of the most significant SPD process, which is used to deform metal materials and to develop grain refinement which causes mechanical properties improvement, and is selected as a topic of this paper. In the paper, the principle of severe plastic deformation is explained as well as some of the processes. Special attention is dedicated to equal channel angular pressing process, required tools for its execution, processing parameters and occuring changes in the processed material.

• Keywords: obrada metala; značajna plastična deformacija; kutna ekstruzija
• Keywords (english): metal processing; severe plastic deformation; equal channel angular pressing
• Language: croatian
• URN:NBN: urn:nbn:hr:235:552484
• Study programme: Title: Mechanical 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 resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 17:17:20