TKD/EBSD and TEM analysis of microstructural changes ongoing in AISI 304L steel exposed to the cyclic loading

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F23%3A00570838" target="_blank" >RIV/68081723:_____/23:00570838 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0921509323003672?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0921509323003672?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2023.144943" target="_blank" >10.1016/j.msea.2023.144943</a>

Jazyk výsledku

angličtina

Název v původním jazyce

TKD/EBSD and TEM analysis of microstructural changes ongoing in AISI 304L steel exposed to the cyclic loading

Popis výsledku v původním jazyce

The study deals with microstructural evolution of the 304L steel exposed to the low cycle straining. The two states of material were studied, the as-received and solution annealed state. Solution annealing caused grain growth from 29 ± 10 μm to 48 ± 30 μm, reduction of chemical heterogeneity and decrease of overall dislocation density. Cyclic hardening/softening curves were measured and three stages of fatigue life were distinguished. Initial cyclic hardening was followed by cyclic softening. The pronounced secondary hardening was measured in the last stage of fatigue life. Advanced techniques of electron microscopy were used to enlighten origin of the material behavior in particular stages. The material response in individual stages is thoroughly discussed in terms of microstructure evolution. Electron channeling contrast imaging visualized the fine microstructural features and revealed structure evolution, however was not able to identify the features. Transmission electron microscopy is useful for individual structural features characterization, however, it is quite complicated to be performed. Transmission Kikuchi diffraction provided similar results to transmission electron microscopy while characterization of evolved microstructural features revealed the deformation mechanism acting under loading at lower time and relatively smaller effort. Particular damage mechanisms operating in material are linked to the mechanical data.

Název v anglickém jazyce

TKD/EBSD and TEM analysis of microstructural changes ongoing in AISI 304L steel exposed to the cyclic loading

Popis výsledku anglicky

The study deals with microstructural evolution of the 304L steel exposed to the low cycle straining. The two states of material were studied, the as-received and solution annealed state. Solution annealing caused grain growth from 29 ± 10 μm to 48 ± 30 μm, reduction of chemical heterogeneity and decrease of overall dislocation density. Cyclic hardening/softening curves were measured and three stages of fatigue life were distinguished. Initial cyclic hardening was followed by cyclic softening. The pronounced secondary hardening was measured in the last stage of fatigue life. Advanced techniques of electron microscopy were used to enlighten origin of the material behavior in particular stages. The material response in individual stages is thoroughly discussed in terms of microstructure evolution. Electron channeling contrast imaging visualized the fine microstructural features and revealed structure evolution, however was not able to identify the features. Transmission electron microscopy is useful for individual structural features characterization, however, it is quite complicated to be performed. Transmission Kikuchi diffraction provided similar results to transmission electron microscopy while characterization of evolved microstructural features revealed the deformation mechanism acting under loading at lower time and relatively smaller effort. Particular damage mechanisms operating in material are linked to the mechanical data.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GJ19-25591Y" target="_blank" >GJ19-25591Y: Vliv mikrostruktury na únavové vlastnosti vysoce anisotropických nerezavějících ocelí vyrobených pomocí selektivního laserového tání</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

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 Properties Microstructure and Processing

ISSN

0921-5093

e-ISSN

1873-4936

Svazek periodika

872

Číslo periodika v rámci svazku

MAY

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

9

Strana od-do

144943

Kód UT WoS článku

001029543200001

EID výsledku v databázi Scopus

2-s2.0-85151455981