Analysis of Cracks of Thermostats Casings Made of Brass

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47718684%3A_____%2F22%3AN0000036" target="_blank" >RIV/47718684:_____/22:N0000036 - isvavai.cz</a>
Result on the web
<a href="https://www.vzuplzen.cz/" target="_blank" >https://www.vzuplzen.cz/</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Analysis of Cracks of Thermostats Casings Made of Brass
Original language description
As part of the project “Thermostat for universal use in (electro) mobility”, an analysis of three currently used thermostats failed during operation was performed. In all three cases, cracks occurred in the brass outer casings. The cracks were open and fractographical observation was performed. The microstructure of the material was evaluated using both the light and scanning electron microscopy. The local composition of the material was determined by EDS microanalysis. Furthermore, hardness profiles were measured. The cracks were predominantly intergranular with a smaller portion of transgranular cleavage. The microstructure was formed by a mixture of - and -phase grains and lead particles. In addition to the stress caused by the overpressure of the molten wax, a higher level of residual stresses caused by deformations can be expected. The failure was caused by the mechanism of stress-corrosion cracking. Metal induced embrittlement or/and corrosion fatigue could interact too.
Czech name
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Czech description
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Project
<a href="/en/project/FW03010487" target="_blank" >FW03010487: Thermostat for Universal Use in (Electro)Mobility</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Absracts of Contributions from the 18th International symposium on Metallography, fractography and Materials Science, Metallography and Fractography 2022
ISBN
978-80-553-4064-7
ISSN
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e-ISSN
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Number of pages
1
Pages from-to
29
Publisher name
Technical University of Košice
Place of publication
Košice
Event location
Starý Smokovec, Slovensko
Event date
Apr 27, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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