zaključna naloga Univerzitetnega študijskega programa I. stopnje Strojništvo - Razvojno raziskovalni program
Jan Klobučar (Author), Sebastjan Žagar (Mentor), Roman Šturm (Co-mentor)

Abstract

V zaključni nalogi je obravnavana uporaba laserskega udarnega utrjevanja (LSP) za izboljšanje lastnosti magnezijeve zlitine AZ80. V okviru raziskave sta bila izdelana in analizirana dva vzorca magnezijeve zlitine, obdelana z različnimi intenzitetami laserskega udarnega utrjevana brez zaščitne plasti (LSPwC). Pri analizi smo se osredotočili na naslednje lastnosti: hrapavost, zaostale napetosti, mikrotrdota, korozijska odpornost in mikrostruktura. Dobljene rezultate smo primerjal z osnovnim materialom. Ugotovili smo, da LSPwC ugodno vpliva na trdoto, inducira tlačne zaostale napetosti in izboljša korozijsko obstojnost. Močno pa se poveča hrapavost površne, ki lahko negativno vpliva predvsem na korozijsko obstojnost zlitine.

Keywords

diplomske naloge;lasersko udarno utrjevanje;magnezijeve zlitine;hrapavost površine;mikrotrdota;zaostale napetosti;mikrostruktura;korozijska odpornost;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FS - Faculty of Mechanical Engineering
Publisher: [J. Klobučar]
UDC: 620.179:669.721.5:621.9.048(043.2)
COBISS: 171077635 Link will open in a new window
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Other data

Secondary language: English
Secondary title: Laser shock peening of AZ80 magnesium alloy
Secondary abstract: In this thesis, the use of laser shock peening (LSP) to improve the properties of AZ80 magnesium alloy was investigated. As part of the research, two samples of the magnesium alloy were prepared and analyzed using different intensities of laser shock peening without coating (LSPwC). During the analysis we focused on the following properties: surface roughness, residual stresses, microhardness, corrosion resistance and microstructure. The results obtained were compared with those of the base material. We found that LSPwC has a favorable effect on hardness, induces compressive residual stresses and improves corrosion resistance. However, the surface roughness increases significantly, which may have a negative effect especially on the corrosion resistance of the alloy.
Secondary keywords: thesis;laser shock peening;magnesium alloy;surface roughness;microhardness;residual stresses;microstructure;corrosion resistance;
Type (COBISS): Final paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za strojništvo
Pages: XII, 41 f.
ID: 19963998
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