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Mechanical properties and structure of the aluminum alloy after heat treatment
 Roleček, Jakub ; Julišová, Martina (referee) ; Juliš, Martin (advisor)
The presented bachelor´s thesis deals with the influence of heat treatment especially artificial aging on mechanical and structural properties of AlSi7Mg0.6 alloy. Cylindrical test bars of diameter 6 mm and 9 mm cast into a self-supporting ceramic shell made by plaster investment technology were used as experimental samples. These test bars were cast by Alucast whereas the patented technology of casting- JF casting was used. On the test bars was carried out the T6 heat treatment according to the Standards AMS 2771C. After the solution annealing were test bars divided to the six groups and put through various time of artificial aging, namely from 2 to the 12 hours. In order to evaluate the effect of the time of artificial aging on the structure and mechanical properties of both diameters of the test bars, the method of light microscopy, Brinell hardness test and static traction test were used. Also SDAS quantification was carried out by means of image analysis. On the grounds results of experiments it is possible to state, that the best values of mechanical properties of both diameters of the cylindrical test bars were reached after 10 hours of artificial aging.
Detailed record
Mechanical properties and structure of the aluminum alloy after heat treatment
 Roleček, Jakub ; Julišová, Martina (referee) ; Juliš, Martin (advisor)
The presented bachelor´s thesis deals with the influence of heat treatment especially artificial aging on mechanical and structural properties of AlSi7Mg0.6 alloy. Cylindrical test bars of diameter 6 mm and 9 mm cast into a self-supporting ceramic shell made by plaster investment technology were used as experimental samples. These test bars were cast by Alucast whereas the patented technology of casting- JF casting was used. On the test bars was carried out the T6 heat treatment according to the Standards AMS 2771C. After the solution annealing were test bars divided to the six groups and put through various time of artificial aging, namely from 2 to the 12 hours. In order to evaluate the effect of the time of artificial aging on the structure and mechanical properties of both diameters of the test bars, the method of light microscopy, Brinell hardness test and static traction test were used. Also SDAS quantification was carried out by means of image analysis. On the grounds results of experiments it is possible to state, that the best values of mechanical properties of both diameters of the cylindrical test bars were reached after 10 hours of artificial aging.
Detailed record

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