Mechanism of intergranular fatigue crack growth in copper polycrystal

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F24%3A00582924" target="_blank" >RIV/68081723:_____/24:00582924 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0142112324000483?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0142112324000483?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijfatigue.2024.108190" target="_blank" >10.1016/j.ijfatigue.2024.108190</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mechanism of intergranular fatigue crack growth in copper polycrystal

Popis výsledku v původním jazyce

Polycrystalline copper specimens (notched and smooth) were subjected to constant strain amplitude loading and the fatigue fracture surface was inspected and analyzed. The majority of facets on the fracture surfaces indicated intercrystalline fracture. Facets with well-developed relief were inspected. The relief was formed by persistent slip markings consisting of extrusions and intrusions similar to that on the specimen surface in the cyclic plastic zone of the growing crack. The mechanism of grain boundary cracking in the cyclic plastic zone of the growing crack similar to that recently suggested for intergranular crack initiation was drawn up. The crack growth mechanism based on the interconnection of cracked grain boundaries and the tear of the islands between them was proposed. The effect of grain size, orientation, and crack growth rate on the grain boundary cracking was discussed. Preliminary results on other FCC materials indicate a more general validity of the proposed intergranular fatigue crack growth mechanism.

Název v anglickém jazyce

Mechanism of intergranular fatigue crack growth in copper polycrystal

Popis výsledku anglicky

Polycrystalline copper specimens (notched and smooth) were subjected to constant strain amplitude loading and the fatigue fracture surface was inspected and analyzed. The majority of facets on the fracture surfaces indicated intercrystalline fracture. Facets with well-developed relief were inspected. The relief was formed by persistent slip markings consisting of extrusions and intrusions similar to that on the specimen surface in the cyclic plastic zone of the growing crack. The mechanism of grain boundary cracking in the cyclic plastic zone of the growing crack similar to that recently suggested for intergranular crack initiation was drawn up. The crack growth mechanism based on the interconnection of cracked grain boundaries and the tear of the islands between them was proposed. The effect of grain size, orientation, and crack growth rate on the grain boundary cracking was discussed. Preliminary results on other FCC materials indicate a more general validity of the proposed intergranular fatigue crack growth mechanism.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

International Journal of Fatigue

ISSN

0142-1123

e-ISSN

1879-3452

Svazek periodika

182

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

108190

Kód UT WoS článku

001180060700001

EID výsledku v databázi Scopus

2-s2.0-85183993096