Near threshold fatigue crack growth in ultrafine-grained copper

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F14%3A00484637" target="_blank" >RIV/68081723:_____/14:00484637 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/1757-899X/63/1/012158" target="_blank" >http://dx.doi.org/10.1088/1757-899X/63/1/012158</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1757-899X/63/1/012158" target="_blank" >10.1088/1757-899X/63/1/012158</a>

Result language
angličtina
Original language name
Near threshold fatigue crack growth in ultrafine-grained copper
Original language description
The near threshold fatigue crack growth in ultrafine-grained (UFG) copper at room temperature was studied in comparison to conventional coarse-grained (CG) copper. The fatigue crack growth rates da/dN in UFG copper were enhanced at Delta K <= 7 MPa root m compared to the CG material. The crack closure shielding, as evaluated using the compliance variation technique, was shown to explain these differences. The effective stress intensity factor amplitude Delta K-eff appears to be the same driving force in both materials. Tests performed in high vacuum on UFG copper demonstrate the existence of a huge effect of environment with growth rates higher of about two orders of magnitude in air compared to high vacuum. This environmental effect on the crack path and the related microstructure is discussed on the basis of fractography observations performed using scanning electron microscope and completed with field emission scanning electron microscope combined with the focused ion beam technique.
Czech name
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Czech description
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Project
<a href="/en/project/GAP108%2F10%2F2001" target="_blank" >GAP108/10/2001: Cyclic plastic deformation and fatigue performance of ultrafine-grained materials</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
6TH INTERNATIONAL CONFERENCE ON NANOMATERIALS BY SEVERE PLASTIC DEFORMATION (NANOSPD6)
ISBN
—
ISSN
1757-8981
e-ISSN
—
Number of pages
9
Pages from-to
—
Publisher name
IOP PUBLISHING LTD
Place of publication
Bristol
Event location
Metz
Event date
Jun 30, 2014
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
000347246200159

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