Dependence of mechanical properties on porosity of AlSi7Mg0.3 alloy during gravity casting
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13420%2F19%3A43894885" target="_blank" >RIV/44555601:13420/19:43894885 - isvavai.cz</a>
Result on the web
<a href="http://www.tf.llu.lv/conference/proceedings2019/Papers/N076.pdf" target="_blank" >http://www.tf.llu.lv/conference/proceedings2019/Papers/N076.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.22616/ERDev2019.18.N076" target="_blank" >10.22616/ERDev2019.18.N076</a>
Alternative languages
Result language
angličtina
Original language name
Dependence of mechanical properties on porosity of AlSi7Mg0.3 alloy during gravity casting
Original language description
In cast material, due to the technology and process used, the presence of defects in the cast material structure, such as porosity, inclusions and oxidative membranes, is inevitable. All these discrepancies have a negative effect on the resulting mechanical value of the cast material. Several works have shown that especially porosity in particular negatively degrades the fatigue properties, strength and ductility of the material. Since most fatigue failures begin at the surface of the material, surface roughness becomes an extremely important factor in determining the fatigue strength of the cast parts, and structural defects (porosity, inclusions, oxide membranes) near the surface have a decisive influence on the initiation of material breakage. The work is focused on the fractographic analysis of the fracture surface of AlSi7Mg0.3 casting alloy. Using the electron scanning microscope, the fracture area of the samples was analysed. Optical metallography identified structural components of castings just below the fracture surface as well as the course of the fracture line. An increased number of oxygen, carbon, chlorine and fluorine elements occurred on the surface of the samples. The occurrence of these elements most likely results in material breakage, which also confirms the results achieved by the static tensile test. On the basis of the obtained results from the performed analyses, mechanisms of breaking of alloyed material of Al-Si type alloys were determined.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Engineering for Rural Development
ISSN
1691-3043
e-ISSN
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Volume of the periodical
2019
Issue of the periodical within the volume
18
Country of publishing house
LV - LATVIA
Number of pages
6
Pages from-to
1001-1006
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-85067117481