Surface relief evolution and fatigue crack initiation in René 41 superalloy cycled at room temperature

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F21%3A00543078" target="_blank" >RIV/68081723:_____/21:00543078 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26620/21:PU146845

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0921509321007899?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0921509321007899?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2021.141520" target="_blank" >10.1016/j.msea.2021.141520</a>

Result language

angličtina

Original language name

Surface relief evolution and fatigue crack initiation in René 41 superalloy cycled at room temperature

Original language description

Surface relief evolution and fatigue crack initiation of René 41 superalloy was studied. The material was tested in two thermodynamical states: solutionised and aged. Cylindrical specimens were cycled at total strain amplitude 0.8% at room temperature. In order to study relevant mechanisms resulting in surface relief formation and eventually fatigue crack initiation, cycling was interrupted at definite number of elapsed cycles. After each interruption, the specimen surface was observed by means of scanning electron microscopy and thin lamellae were cut out of the surface and observed by means of transmission electron microscopy. Cyclic deformation was found to localise since the first cycle, causing the formation of persistent slip bands and persistent slip markings in the form of slip steps, extrusions and later intrusions as well. Continuous cycling led to the formation of new persistent slip markings as well as widening of the already existing ones. The role of persistent slip markings in fatigue crack initiation at room temperature was found to be crucial in this superalloy. The results were thoroughly discussed in relation to theoretical models of surface relief formation.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20306 - Audio engineering, reliability analysis

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2021

Confidentiality

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

Name of the periodical

Materials Science and Engineering A Structural Materials Properties Microstructure and Processing

ISSN

0921-5093

e-ISSN

1873-4936

Volume of the periodical

819

Issue of the periodical within the volume

JUL

Country of publishing house

CH - SWITZERLAND

Number of pages

14

Pages from-to

141520

UT code for WoS article

000668973600001

EID of the result in the Scopus database

2-s2.0-85108144990