About: Initiation and short crack growth in austenitic–ferritic duplex steel-effect of positive mean stress

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The effect of the mean stress on the crack initiation and short crack growth of austenitic–ferritic duplex steel has been studied. High mean stresses and stress amplitudes result in appreciable mean strain relaxation and long-term hardening. Mean stress produces unidirectional slip bands and slip steps that serve as nuclei for persistent slip bands and persistent slip markings. It leads to the acceleration of the crack initiation and production of a high density of cracks. Crack linkage contributes to the growth of short cracks. The concept of equivalent crack was used to describe the crack growth. The kinetics of short crack growth with positive mean stress is similar to that in symmetric loading, that is, exponential growth is observed. Positive mean stress results in earlier crack initiation and in the acceleration of the crack growth rate. Both factors contribute to the decrease of the fatigue life. The effect of the mean stress on the crack initiation and short crack growth of austenitic–ferritic duplex steel has been studied. High mean stresses and stress amplitudes result in appreciable mean strain relaxation and long-term hardening. Mean stress produces unidirectional slip bands and slip steps that serve as nuclei for persistent slip bands and persistent slip markings. It leads to the acceleration of the crack initiation and production of a high density of cracks. Crack linkage contributes to the growth of short cracks. The concept of equivalent crack was used to describe the crack growth. The kinetics of short crack growth with positive mean stress is similar to that in symmetric loading, that is, exponential growth is observed. Positive mean stress results in earlier crack initiation and in the acceleration of the crack growth rate. Both factors contribute to the decrease of the fatigue life. (en)
Title	Initiation and short crack growth in austenitic–ferritic duplex steel-effect of positive mean stress Initiation and short crack growth in austenitic–ferritic duplex steel-effect of positive mean stress (en)
skos:prefLabel	Initiation and short crack growth in austenitic–ferritic duplex steel-effect of positive mean stress Initiation and short crack growth in austenitic–ferritic duplex steel-effect of positive mean stress (en)
skos:notation	RIV/68081723:_____/12:00386020!RIV13-GA0-68081723
http://linked.open...avai/predkladatel	Ústav fyziky materiálů AVČR, v.v.i.
http://linked.open...avai/riv/aktivita	I P Z
http://linked.open...avai/riv/aktivity	I, P(GA101/07/1500), Z(AV0Z20410507)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Petrenec, Martin Obrtlík, Karel Polák, Jaroslav Man, Jiří
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky materiálů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	141877
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/12:00386020
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	crack growth.; fatigue life; initiation; mean stress; short crack (en)
http://linked.open.../riv/klicoveSlovo	fatigue life mean stress initiation crack growth. short crack
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[9D7D3F607CE0]
http://linked.open...i/riv/nazevZdroje	Fatigue and Fracture of Engineering Materials and Structures
http://linked.open...in/vavai/riv/obor	JL
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Novel principles for life prediction in variable loading of components
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	35
http://linked.open...iv/tvurceVysledku	Man, Jiří Obrtlík, Karel Petrenec, Martin Polák, Jaroslav
http://linked.open...ain/vavai/riv/wos	000300765800006
http://linked.open...n/vavai/riv/zamer	Physical properties of advanced materials in relation to their microstructure and processing
issn	8756-758X
number of pages	12 (xsd:int)
http://bibframe.org/vocab/doi	10.1111/j.1460-2695.2011.01613.x
is http://linked.open...avai/riv/vysledek of	Initiation and short crack growth in austenitic–ferritic duplex steel-effect of positive mean stress

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