Shot peening as a pre-treatment to anodic oxidation coating process of AW 6082 aluminum for fatigue life improvement

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F17%3A00479875" target="_blank" >RIV/68081723:_____/17:00479875 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s00170-017-0776-1" target="_blank" >http://dx.doi.org/10.1007/s00170-017-0776-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00170-017-0776-1" target="_blank" >10.1007/s00170-017-0776-1</a>

Result language

angličtina

Original language name

Shot peening as a pre-treatment to anodic oxidation coating process of AW 6082 aluminum for fatigue life improvement

Original language description

Shot peening with glass beads was used as a pretreatment to anodic oxidation of AW 6082 aluminum alloy to eliminate the negative effect of the anodized layer on fatigue strength. Shot peening with intensity 6N and coverage of 100% was able to significantly improve the fatigue strength of the experimental material and when N = 3 × 109 cycles is considered the fatigue strength increased from sigma a = 80 MPa to sigma a = 110 MPa. Creation of the anodized surface layer with thickness of approximately 30 micrometers on the pre-treated surface decreased the fatigue strength, when compared to the shot peened surface, almost in the whole measured region, however, the fatigue strength was still higher than for not treated material. The positive effect of shot peening on fatigue strength was a result of creation of compressive residual stress field with maximum of - 200 MPa and depth of 350 micrometers. Fracture surface analysis showed that this deformed surface layer had increased resistance to fatigue crack initiation and propagation in the early stages and cracks created on the anodized surface layer were unable to propagate directly to the material and new initiation of fatigue crack was required, however, it was still accelerated by the sharp notch which the crack created.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20306 - Audio engineering, reliability analysis

Project

<a href="/en/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal of Advanced Manufacturing Technology

ISSN

0268-3768

e-ISSN

—

Volume of the periodical

93

Issue of the periodical within the volume

9-12

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

3315-3323

UT code for WoS article

000416179700028

EID of the result in the Scopus database

2-s2.0-85023752209