Fatigue Crack Initiation Change of Cast AZ91 Magnesium Alloy from Low to Very High Cycle Fatigue Region
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F21%3A00547378" target="_blank" >RIV/68081723:_____/21:00547378 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/1996-1944/14/21/6245" target="_blank" >https://www.mdpi.com/1996-1944/14/21/6245</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/ma14216245" target="_blank" >10.3390/ma14216245</a>
Alternative languages
Result language
angličtina
Original language name
Fatigue Crack Initiation Change of Cast AZ91 Magnesium Alloy from Low to Very High Cycle Fatigue Region
Original language description
Fatigue tests were performed on the AZ91 cast alloy to identify the mechanisms of the fatigue crack initiation. In different fatigue regions, different mechanisms were observed. In the low and high cycle fatigue regions, slip markings formation accompanied with Mg17Al12 particles cracking were observed. Slip markings act as the fatigue crack initiation sites. The size and number of slip markings decreased with decreased stress amplitude applied. When slip markings formation was suppressed due to low stress amplitude, particle cracking became more important and the cracks continued to grow through the particle/solid solution interface. The change of the fatigue crack initiation mechanisms led the S-N curve to shift to the higher number of cycles to the fracture, demonstrated by its stepwise character. A lower fatigue limit of 60 MPa was determined at 20 kHz for 2 × 10^9 cycles compared to the 80 MPa determined at 60 Hz for 1 × 10^7 cycles.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/TN01000071" target="_blank" >TN01000071: National Competence Centre of Mechatronics and Smart Technologies for Mechanical Engineering</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials
ISSN
1996-1944
e-ISSN
1996-1944
Volume of the periodical
14
Issue of the periodical within the volume
21
Country of publishing house
CH - SWITZERLAND
Number of pages
11
Pages from-to
6245
UT code for WoS article
000718657500001
EID of the result in the Scopus database
2-s2.0-85117769933