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Characterization of creep behaviour and microstructure changes in pure copper processed by equal-channel angular pressing. Part I. Creep behaviour

SYSNO ASEP	0349224
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Characterization of creep behaviour and microstructure changes in pure copper processed by equal-channel angular pressing. Part I. Creep behaviour
Author(s)	Dvořák, Jiří (UFM-A)_{RID, ORCID} Sklenička, Václav (UFM-A)_{RID, ORCID} Král, Petr (UFM-A)_{RID, ORCID} Svoboda, Milan (UFM-A)_{RID, ORCID} Saxl, Ivan (MU-W)_{RID, SAI}
Number of authors	5
Source Title	Reviews on Advanced Materials Science - ISSN 1606-5131 Roč. 25, č. 3 (2010), s. 225-232
Number of pages	8 s.
Action	International Symposium on Bulk Nanostructures Materials /2./
Event date	22.09.2009-26.09.2009
VEvent location	Ufa
Country	RU - Russian Federation
Event type	EUR
Language	eng - English
Country	RU - Russian Federation
Keywords	creep ; copper ; ultrafine-grained ; ECAP
Subject RIV	JJ - Other Materials
CEZ	AV0Z20410507 - UFM-A (2005-2011)
	AV0Z10190503 - MU-W (2005-2011)
UT WOS	000282497400005
Annotation	Coarse-grained high-purity copper was processed by equal-channel angular pressing (ECAP) through 1-12 passes and then tested under creep conditions at temperature ranging from 423 to 523K It was found that the creep resistance of the ECAP processed material was markedly improved with respect to unpressed material. The results revealed that the creep behaviour of pressed material strongly depends on the number of ECAP passes The ECAP material exhibits the highest creep resistance after the first ECAP pass However, successive ECAP passes lead to a noticeable decrease in the creep properties of the pressed copper The results indicate conventional power-law creep with a stress exponent of similar to`5 - 6 which is consistent with an intragranular dislocation process involving the glide and climb of dislocations
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2011

Number of the records: 1