Effect of slide burnishing basic parameters on fatigue performance of 2024-Т3 high-strength aluminium alloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00309959" target="_blank" >RIV/68407700:21340/17:00309959 - isvavai.cz</a>

Výsledek na webu

<a href="http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1460-2695/homepage/ProductInformation.html" target="_blank" >http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1460-2695/homepage/ProductInformation.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/ffe.12608" target="_blank" >10.1111/ffe.12608</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of slide burnishing basic parameters on fatigue performance of 2024-Т3 high-strength aluminium alloy

Popis výsledku v původním jazyce

The effect of slide burnishing (SB) on the high-cycle fatigue (HCF) performance of 2024-T3 high-strength aluminium alloy has been studied. After SB with optimum basic process parameters under `minimum roughness’ criterion, the 107 cycle fatigue strength increases with 25% – from 180 to 225 MPa, fatigue life is increased more than 50 times, and the roughness obtained reaches up to Ra = 0.05 μm. Further, various combinations of burnishing force and deforming element radius have been applied to reach maximum HCF performance despite roughness obtained. It has been established that with the optimum combination under `maximum HCF performance’ criterion, 107 cycle fatigue strength increases with 44% – from 180 to 260 MPa as the roughness obtained is Ra = 0.25 μm. This significant enhancement in the HCF performance is due to introduced beneficial residual compressive stresses. They shift the fatigue crack initiation site from surface to subsurface layers and, as a result, the nucleation and propagation of the first-mode fatigue cracks are retarded. In order to establish the fatigue limit (based on 2 x 108 cycles), a combined approach, based on limited Wöhler’s curve and Locati’s method, has been applied. The fatigue limit of 2024-T3 high-strength aluminium alloy can be increased up to 250 MPa using SB with optimal basic parameters under `maximum HCF performance’ criterion.

Název v anglickém jazyce

Effect of slide burnishing basic parameters on fatigue performance of 2024-Т3 high-strength aluminium alloy

Popis výsledku anglicky

The effect of slide burnishing (SB) on the high-cycle fatigue (HCF) performance of 2024-T3 high-strength aluminium alloy has been studied. After SB with optimum basic process parameters under `minimum roughness’ criterion, the 107 cycle fatigue strength increases with 25% – from 180 to 225 MPa, fatigue life is increased more than 50 times, and the roughness obtained reaches up to Ra = 0.05 μm. Further, various combinations of burnishing force and deforming element radius have been applied to reach maximum HCF performance despite roughness obtained. It has been established that with the optimum combination under `maximum HCF performance’ criterion, 107 cycle fatigue strength increases with 44% – from 180 to 260 MPa as the roughness obtained is Ra = 0.25 μm. This significant enhancement in the HCF performance is due to introduced beneficial residual compressive stresses. They shift the fatigue crack initiation site from surface to subsurface layers and, as a result, the nucleation and propagation of the first-mode fatigue cracks are retarded. In order to establish the fatigue limit (based on 2 x 108 cycles), a combined approach, based on limited Wöhler’s curve and Locati’s method, has been applied. The fatigue limit of 2024-T3 high-strength aluminium alloy can be increased up to 250 MPa using SB with optimal basic parameters under `maximum HCF performance’ criterion.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Fatigue & Fracture of Engineering Materials & Structures

ISSN

8756-758X

e-ISSN

1460-2695

Svazek periodika

40

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

1893-1904

Kód UT WoS článku

000412226900018

EID výsledku v databázi Scopus

2-s2.0-85017396024