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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Metals

ISSN

2075-4701

e-ISSN

—

Svazek periodika

10

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

18

Strana od-do

1262

Kód UT WoS článku

000580166200001

EID výsledku v databázi Scopus

2-s2.0-85091095126