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Creep of ex-service 0.5CrMoV steel at low strain rates

SYSNO ASEP	0323650
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Ostatní články
Title	Creep of ex-service 0.5CrMoV steel at low strain rates
Title	Creep 0.5CrMoV oceli po průmyslovém použití při malých rychlostech deformace
Author(s)	Kloc, Luboš (UFM-A)_{RID, ORCID}
Source Title	Materials Science and Engineering A Structural Materials Properties Microstructure and Processing. - : Elsevier - ISSN 0921-5093 510-511, - (2009), s. 70-73
Number of pages	4 s.
Action	Creep 2008
Event date	04.05.2008-09.05.2008
VEvent location	Bayreuth
Country	DE - Germany
Event type	WRD
Language	eng - English
Country	NL - Netherlands
Keywords	Residual creep life ; Low strain creep ; Low alloy steel
Subject RIV	JG - Metallurgy
R&D Projects	1P05OC006 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z20410507 - UFM-A (2005-2011)
Annotation	High sensitivity helicoid spring specimen technique was used to investigate creep response of ex-service low alloy steel. The creep conditions were selected to be close to that under which the material was used, that is 833K and 34MPa. Three specimens were prepared from the segment of main steam pipeline having radial, tangential and axial orientation with respect to original pipeline axis. Results were compared to creep curves obtained on the unused generic low alloy steel under the same conditions. The ex-service steel creeps considerably faster, mainly during the transient period. Unfortunately, the chemical composition of the steel does not match its specification so it is not clear which part of the difference can be attributed to the creep damage. Some differences were observed between different specimen orientation, so the anisotropy introduced by the creep damage can be observed. More experiments are needed to determine potential contribution to the residual life assessment.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2009

Number of the records: 1