Effect of Severe Shot Peening on the Very-High CyclenNotch Fatigue of an AW 7075 Alloy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F20%3A00532360" target="_blank" >RIV/68081723:_____/20:00532360 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2075-4701/10/9/1262" target="_blank" >https://www.mdpi.com/2075-4701/10/9/1262</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/met10091262" target="_blank" >10.3390/met10091262</a>

Result language

angličtina

Original language name

Effect of Severe Shot Peening on the Very-High CyclenNotch Fatigue of an AW 7075 Alloy

Original language description

The severe shot peening process was applied to the notched specimens from an AW7075nalloy with the aim to improve fatigue endurance in the very-high cycle fatigue region. To reveal thenstress state in the notch vicinity, finite element analysis was performed, simulating the conditionsnof the used 20 kHz ultrasonic fatigue loading. Modified surface characteristics by the severe shotnpeening process were analyzed in terms of residual stress distribution measured by X-ray di ractionnmethods and near-surface microstructural observations by scanning electron microscopy. The appliednsevere shot peening increased the fatigue limit by 11%, however, the positive e ect was recordednonly for the loading amplitudes corresponding to the fatigue lifetimes in the range 107–109 cycles.nAt higher loading amplitudes, the fatigue properties tended to decrease, most likely due to acceleratednfatigue crack initiation on the surface damage features created by the peening process and also bynrapid residual stress relaxation.

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

20501 - Materials engineering

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

2020

Confidentiality

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

Name of the periodical

Metals

ISSN

2075-4701

e-ISSN

—

Volume of the periodical

10

Issue of the periodical within the volume

9

Country of publishing house

CH - SWITZERLAND

Number of pages

18

Pages from-to

1262

UT code for WoS article

000580166200001

EID of the result in the Scopus database

2-s2.0-85091095126