Initiation of fatigue cracks in ultrafine-grained materials in high-cycle fatigue region

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F14%3APU111312" target="_blank" >RIV/00216305:26620/14:PU111312 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/1757-899X/63/1/012159" target="_blank" >http://dx.doi.org/10.1088/1757-899X/63/1/012159</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/63/1/012159" target="_blank" >10.1088/1757-899X/63/1/012159</a>

Result language

angličtina

Original language name

Initiation of fatigue cracks in ultrafine-grained materials in high-cycle fatigue region

Original language description

Initiation of fatigue cracks in materials with conventional grain (CG) size was investigated very thoroughly in the past. There is an extensive knowledge on the localization of cyclic plasticity and early crack development; however, it cannot be straightforwardly applied to the ultrafine-grained (UFG) structures with the grain size below 1 micrometer, because the crack initiation mechanisms are related to dislocation structures, which cannot develop in UFG materials simply from the size reasons. The paper brings results of an experimental investigation of the cyclic strain localization and crack initiation by means of focused ion beam technique (FIB). Two substantially different materials as regards the crystallographic structure, namely UFG Cu and magnesium alloy AZ91 processed by equal channel angular pressing (ECAP) were investigated and the observed characteristic features of crack initiation were discussed. The observations bring evidence that in the high-cycle fatigue (HCF) regio

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JL - Fatigue and fracture mechanics

OECD FORD branch

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Project

<a href="/en/project/EE2.3.30.0039" target="_blank" >EE2.3.30.0039: Excellent young researcher at BUT</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2014

Confidentiality

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

Name of the periodical

Procedia Engineering

ISSN

1877-7058

e-ISSN

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Volume of the periodical

74

Issue of the periodical within the volume

6

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

4

Pages from-to

2-5

UT code for WoS article

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EID of the result in the Scopus database

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