Evaluation of porosity in Al alloy die castings
Abstract
Mechanical properties of an Al-alloy die casting depend significantly on its structural properties. Porosity in Al-alloy castings is one of the most frequent causes of waste castings. Gas pores are responsible for impaired mechanical-technological properties of cast materials. On the basis of a complex evaluation of experiments conducted on AlSi9Cu3 alloy samples taken from the upper engine block which was die- cast with and without local squeeze casting it can be said that castings manufactured without squeeze casting exhibit maximum porosity in the longitudinal section. The area without local squeeze casting exhibits a certain reduction in mechanical properties and porosity increased to as much as 5%. However, this still meets the norms set by SKODA AUTO a.s.
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Biology (General)
Materials of engineering and construction. Mechanics of materials
Technology (General)
Engineering (General). Civil engineering (General)
Technology
Computer applications to medicine. Medical informatics
manufactures
control engineering systems. automatic machinery (general)
mining engineering. metallurgy
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81193
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81193
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d175f5a97b85cd84423ca1f46299ebe8
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