Relation between Porosity and Mechanical Properties of Al-Si Alloys Produced by Low- Pressure Casting

• Autorzy: Cais J. , Weiss V. , Svobodova J.
• Języki publikacji: EN

Abstrakty

EN

The aim of the research was to evaluate influence of porosity size on mechanical properties of AlSi7Mg0.3 (EN AC 42 100) alloy before and after thermal treatment. The castings from the same production type (forms used for tires production) were used for the analysis. They were casted using low-pressure casting technology. Since the negative influence of porosity on mechanical properties of Al alloys is generally known that there is no quantitative assessment. The relation of porosity size in the structure of AlSi7Mg0.3 alloy and its mechanical properties is verified and quantified in this research. Static tensile testing has proven the relation between porosity size in a structure of an Al material and its mechanical properties. The image analysis was applied in quantitative measurement of the porosity. The measurement was performed on prepared metallographic specimens. Porosity size is considered as a fraction of pore area to the total area of the analyzed specimen and is taken in percentage. As far as the theoretical part of the issue the possible causes of porosity formation and its influence on particular Al alloy types are described [1, 2, 3].

Słowa kluczowe

EN

mechanical properties; castings defects; porosity; alloy AlSi7Mg; intermetallic phases

PL

wady odlewów; właściwości mechaniczne; porowatość; stop AlSi7Mg; faza międzymetaliczna

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2014
• Tom: Vol. 14, iss. 1 spec.
• Strony: 97--102
• Opis fizyczny: Bibliogr. 13 poz., rys., tab., wykr.

Twórcy

autor

Cais J.

• Department of Technology and Material Engineering, J.E. Purkyně University in Ústí nad Labem , Pasteurova 7, 400 01 Ústí nad Labem, Czech Republic

autor

Weiss V.

• Department of Technology and Material Engineering, J.E. Purkyně University in Ústí nad Labem , Pasteurova 7, 400 01 Ústí nad Labem, Czech Republic

autor

Svobodova J.

• Department of Technology and Material Engineering, J.E. Purkyně University in Ústí nad Labem , Pasteurova 7, 400 01 Ústí nad Labem, Czech Republic

Bibliografia

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