Fatigue behavior of AW7075 aluminum alloy in ultra-high cycle fatigue region

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F20%3A00523973" target="_blank" >RIV/68081723:_____/20:00523973 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.msea.2020.138922" target="_blank" >https://doi.org/10.1016/j.msea.2020.138922</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2020.138922" target="_blank" >10.1016/j.msea.2020.138922</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fatigue behavior of AW7075 aluminum alloy in ultra-high cycle fatigue region

Popis výsledku v původním jazyce

Advanced electron microscopy methods were used with the aim to explain the differences in the response of strengthened AW 7075 T6511 aluminum alloy to fatigue loading at 5 Hz and 20 kHz. The shift of the S-N curve to higher number of cycles to fracture for the specimens tested at high frequency was experimentally determined. This effect is not connected with a change of the fatigue crack initiation mechanism and site from the surface to material interior. The absence of slip markings and cracking of primary intermetallic particles on the surface of cycled specimens were characteristic features. A difference in the dislocation density and dislocation arrangement in the vicinity of the fatigue crack initiation sites was shown to be the only observable effect. However, consistent with the strengthened structure of the alloy, no specific dislocation structure due to the cyclic loading was observed, regardless of the loading frequency and stress amplitude.

Název v anglickém jazyce

Fatigue behavior of AW7075 aluminum alloy in ultra-high cycle fatigue region

Popis výsledku anglicky

Advanced electron microscopy methods were used with the aim to explain the differences in the response of strengthened AW 7075 T6511 aluminum alloy to fatigue loading at 5 Hz and 20 kHz. The shift of the S-N curve to higher number of cycles to fracture for the specimens tested at high frequency was experimentally determined. This effect is not connected with a change of the fatigue crack initiation mechanism and site from the surface to material interior. The absence of slip markings and cracking of primary intermetallic particles on the surface of cycled specimens were characteristic features. A difference in the dislocation density and dislocation arrangement in the vicinity of the fatigue crack initiation sites was shown to be the only observable effect. However, consistent with the strengthened structure of the alloy, no specific dislocation structure due to the cyclic loading was observed, regardless of the loading frequency and stress amplitude.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/EF16_013%2F0001823" target="_blank" >EF16_013/0001823: Modernizace Infrastruktury pro studium a aplikaci pokročilých materiálů (m-IPMinfra)</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

Materials Science and Engineering A-Structural materials

ISSN

0921-5093

e-ISSN

—

Svazek periodika

774

Číslo periodika v rámci svazku

FEB

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

138922

Kód UT WoS článku

000514747200013

EID výsledku v databázi Scopus

2-s2.0-85077674805