Microstructure and martensitic transformation in 316L austenitic steel during multiaxial low cycle fatigue at room temperature

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F19%3A00508508" target="_blank" >RIV/68081723:_____/19:00508508 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0921509319311931?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0921509319311931?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2019.138407" target="_blank" >10.1016/j.msea.2019.138407</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microstructure and martensitic transformation in 316L austenitic steel during multiaxial low cycle fatigue at room temperature

Popis výsledku v původním jazyce

Austenitic stainless 316L steel in cold worked condition was subjected to torsional cyclic loading with equivalentnstrain amplitudes of 0.3% and 0.4% and multiaxial (in-phase and out-of-phase) cyclic loading with equivalentnstrain amplitude of 0.35% at room temperature. Cyclic plastic response has been measured and analyzed.nInternal structure in the as-received state was compared with the deformation microstructures that developednduring cyclic straining with various strain histories. In all three investigated cases the volumes with dislocationnstructures corresponding to cyclic strain localization (persistent slip bands, irregular wall and channel structures)nwere found. In addition, also islands of deformation induced α′-martensite were observed. Transmissionnelectron microscopy, selected area electron diffraction and ferritscope measurements allowed to estimate thenfraction and distribution of α′-martensite islands. The shape of fatigue hardening/softening curves has beenndiscussed in relation with the localization of cyclic plastic strain in the low energy dislocation structures and itsnblockade by the islands of α′-martensite.

Název v anglickém jazyce

Microstructure and martensitic transformation in 316L austenitic steel during multiaxial low cycle fatigue at room temperature

Popis výsledku anglicky

Austenitic stainless 316L steel in cold worked condition was subjected to torsional cyclic loading with equivalentnstrain amplitudes of 0.3% and 0.4% and multiaxial (in-phase and out-of-phase) cyclic loading with equivalentnstrain amplitude of 0.35% at room temperature. Cyclic plastic response has been measured and analyzed.nInternal structure in the as-received state was compared with the deformation microstructures that developednduring cyclic straining with various strain histories. In all three investigated cases the volumes with dislocationnstructures corresponding to cyclic strain localization (persistent slip bands, irregular wall and channel structures)nwere found. In addition, also islands of deformation induced α′-martensite were observed. Transmissionnelectron microscopy, selected area electron diffraction and ferritscope measurements allowed to estimate thenfraction and distribution of α′-martensite islands. The shape of fatigue hardening/softening curves has beenndiscussed in relation with the localization of cyclic plastic strain in the low energy dislocation structures and itsnblockade by the islands of α′-martensite.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Materials Science and Engineering A-Structural materials

ISSN

0921-5093

e-ISSN

—

Svazek periodika

767

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

14

Strana od-do

138407

Kód UT WoS článku

000494052200010

EID výsledku v databázi Scopus

2-s2.0-85072172153