Thin Wall Austempered Ductile Iron (TWADI)

• Autorzy: Fraś, E. , Górny, M.
• Języki publikacji: EN

Abstrakty

EN

In this paper the analysis of thin walled castings made of ductile iron is considered. It is shown that thin wall austempered ductile iron can be obtained by means of short-term heat treatment of thin wall castings without addition of alloying elements. Metallographic examinations of 2 mm thin walled castings along with casting with thicker wall thickness (20x28 mm) after different austempring conditions are presented. It has been proved that short-term heat treatment amounted 20 minutes of austenitizing at 880 oC followed by holding at 400 oC for 5 minutes causes ausferrite matrix in 2 mm wall thickness castings, while casting with thicker wall thickness remain untransformed and martensite is still present in a matrix. Finally there are shown that thin wall ductile iron is an excellent base material for austempering heat treatments. As a result high mechanical properties received in thin wall plates made of austempered ductile iron.

Słowa kluczowe

PL

innowacyjne technologie odlewnicze; innowacyjne materiały odlewnicze; metalografia; odlewanie cienkościenne; żeliwo sferoidalne

EN

innovative foundry technologies; innovative foundry materials; metallography; thin wall ductile iron

• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2009
• Tom: Vol. 9, iss. 3
• Strony: 45-48
• Opis fizyczny: Bibliogr. 13 poz., rys., wykr.

Twórcy

autor

Fraś, E.

autor

Górny, M.

• Department of Cast Alloys and Composites Engineering, AGH University of Science and Technology, Reymonta 23, 30-065 Kraków, Poland,

Bibliografia

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