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Investigation of corrosion behaviour of aluminium alloy subjected to laser shock peening without a protective coating
Trdan, Uroš (Avtor), Grum, Janez (Avtor)

URLURL - Predstavitvena datoteka, za dostop obiščite http://dx.doi.org/10.1155/2015/705306 Povezava se odpre v novem oknu

Izvleček
The effect of shock waves and strain hardening of laser shock peening without protective coating (LSPwC) on alloy AA 6082- T651 was investigated. Analysis of residual stresses confirmed high compression in the near surface layer due to the ultrahigh plastic strains and strain rates induced bymultiple laser shock waves. Corrosion tests in a chloride environment were carried out to determine resistance to localised attack, which was also verified on SEM/EDS. OCP transients confirmed an improved condition, that is, amore positive and stable potential after LSPwCtreatment.Moreover, polarisation resistance of the LSPwCtreated specimen was by a factor of 25 higher compared to the untreated specimen. Analysis of voltammograms confirmed an improved enhanced region of passivity and significantly smaller anodic current density of the LSPwC specimen compared to the untreated one.Through SEM, reduction of pitting attack at the LSPwC specimen surface was confirmed, despite its increased roughness.

Jezik:Angleški jezik
Ključne besede:laser shock peening, residual stresses, electrochemical corrosion, polarisation, SEM/EDS analysis
Vrsta gradiva:Delo ni kategorizirano (r6)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Leto izida:2015
Št. strani:str. 1-9
Številčenje:Vol. 2015
UDK:620.1(045)
ISSN pri članku:1687-8434
DOI:10.1155/2015/705306 Povezava se odpre v novem oknu
COBISS.SI-ID:14377243 Povezava se odpre v novem oknu
Število ogledov:994
Število prenosov:195
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Gradivo je del revije

Naslov:Advances in Materials Science and Engineering
Skrajšan naslov:Adv. Mater. Sci. Eng.
Založnik:Hindawi Publishing Corporation
ISSN:1687-8434
COBISS.SI-ID:517497881 Povezava se odpre v novem oknu

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:lasersko udarno utrjevanje, zaostale napetosti, elektrokemijska korozija, polarizacija, SEM/EDS analiza

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