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Zaostale napetosti v prekrovnih laserskih zvarnih spojih : diplomsko delo Visokošolskega strokovnega študijskega programa I. stopnje StrojništvoHostnik, MihaNerjavna jekla in visokotemperaturne superzlitine so zaradi dobrih mehanskih in protikorozijskih lastnosti v uporabi tudi za izdelke v agresivnih okoljih ter povišanih temperaturah. Pogosto se v ... praktičnih aplikacijah pojavlja potreba po spajanju teh raznorodnih materialov, kar predstavlja velike izzive. Med glavne izzive spada pojav zaostalih napetosti in pokanje varov v vročem. V zaključni nalogi smo analizirali vzdolžne in prečne zaostale napetosti v zvarnih spojih nikljeve superzlitine Inconel 602 (EN 2.4633) in izločevalno utrjevalnega martenzitnega nerjavnega jekla S17400 v stanju H1150M. Prekrovni zvarni spoji cevi iz nikljeve zlitine in jeklene tankostenske cevi so bili izdelani s postopkom kontinuirnega laserskega varjenja z diskastim laserjem ob uporabi treh različnih varilnih parametrov. Za primerjavo smo izmerili tudi zaostale napetosti na osnovni/nenavarjeni, nenatisnjeni cevki in na nenavarjeni cevki natisnjeni na cev. Na vsakem vzorcu so bile, s postopkom rentgenske difrakcije, opravljene meritve na dveh merilnih mestih v vzdolžni in prečni smeri glede na var. Na vidno razpokanih varih smo s pomočjo makroskopa izmerili dolžine razpok ter z makrostrukturnimi analizami v prečnem preseku preučili značilnosti razpok. Ugotovili smo, da obstaja povezava med dolžino razpok in varilnimi pogoji in da so razpoke prisotne tudi pod površino z značilnim pokanjem le po sredini zvarnega spoja.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [M. Hostnik], 2019Language - slovenianCOBISS.SI-ID - 16527643
Author
Hostnik, Miha
Other authors
Klobčar, Damjan |
Trdan, Uroš
Topics
diplomske naloge |
lasersko varjenje |
zaostale napetosti |
razpoke v vročem |
rentgenska difrakcija |
laser welding |
residual stresses |
hot cracking |
x-ray diffraction
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Library/institution |
City | Acronym | For loan | Other holdings |
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Faculty of Mechanical Engineering, Ljubljana | Ljubljana | FSLJ |
reading room 1 cop.
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Year | Impact factor | Edition | Category | Classification | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Hostnik, Miha | ![]() |
Klobčar, Damjan | 20441 |
Trdan, Uroš | 28906 |
Source: Personal bibliographies
and: SICRIS
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