Quality control of magnesium alloy casting and methods of restoration of cast products impermeability

Uridiya Z.P., Mukhina I.Y., Duyunova V.A., Kosarina E.I.
Uridiya Z.P., Mukhina I.Y., Duyunova V.A., Kosarina E.I. Quality control of magnesium alloy casting and methods of restoration of cast products impermeability // Proceedings of VIAM. 2014. No. 12. DOI: 10.18577/2307-6046-2014-0-12-4-4. URL: https://test.viam.ru/en/journal/2014/12/4
Abstract

Some of factors causing appearance of microporosity in magnesium alloy castings were researched. Many parts of different configuration and size with a variable degree of microporosity were studied. According to the analysis of data of ML5 alloy parts research, mechanical properties of castings in case of the steady production process depend, mainly, on the wall thickness of the tested part and on the microporosity degree. The degree of damage caused by microporosity is of a major significance. A scale of microporosity for castings made of ML5 and ML5c.p. magnesium alloys was created. The scale determines the relation between the microporosity image intensity when ML5 alloy casting is being x-rayed and mechanical properties of the casting (ultimate strength and elongation) in the damaged area. The new impregnation compounds Anakrol-90 and KP-GS55 for sealing of micropores and restoration of castings impermeability by vacuum-pressure method were suggested.

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