Effect of overheating degree of molten alloy on material reliability and performance stability of AlSi17CuNiMg silumin castings

• Autorzy: Piątkowski J. , Szymszal J.
• Języki publikacji: EN

Abstrakty

EN

The article discusses the effect of overheating degree (above the casting temperature) on material reliability of AlSi17 silumin. The examined alloys was poured at temperatures, 760; 870 and 980^oC, holding the melt for 40 minutes and casting from the temperature of 760^oC. The assessment of the impact of the degree of overheating was to analysis the tensile strength. From the results of the static tensile test, the main estimators of the descriptive statistics, and coefficients of variation. Having determined the boundary value δ_O for Weibull distribution, the value of „m” modulus was computed along with other coefficients of material reliability, proposed formerly by the authors. Basing on the obtained results, a model of Weibull distribution function was developed for the tensile strength with respective graphic interpretation. The time-temperature parameters of the melting and casting technology have been chosen to determine the scatter of resultant parameter (Rm) in function of overheating degree. The time-temperature treatment of hypereutectic AlSi17CuNiMg silumin, through its effect on the cluster structure of molten alloy, is shaping the material reliability and performance stability of castings.

Słowa kluczowe

EN

structure of molten alloy; hypereutectic silumins; Statistics; Weibull distribution

PL

struktura płynnego stopu; silumin nadeutektyczny; Statistics

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 4
• Strony: 173--176
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr.

Twórcy

autor

Piątkowski J.

• Silesian University of Technology, Chair of Materials Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland

autor

Szymszal J.

• Silesian University of Technology, Chair of Materials Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland

Bibliografia

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• [8] J. Piątkowski, Effect of overheating degree on the solidification parameters of AlSi17CuNiMg silumin. Archives of Foundry, vol. 10, issue 2, 2010, p. 103-107.
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