Cracks in high-manganese cast steel

• Autorzy: Chojecki A. , Telejko I.
• Języki publikacji: EN

Abstrakty

EN

The reasons which account for the formation of in service cracks in castings made from Hadfield steel were discussed. To explain the source of existence of the nuclei of brittle fractures, the properties of cast steel were examined within the range of solidification temperatures, remembering that feeding of this material is specially difficult, causing microporosity in hot spots. This creates conditions promoting the formation of microcracks which tend to propagate during service conditions involving high dynamic stresses, and explains why the cracks are mainly characterized by a brittle nature. The reason for crack formation in service are micro-porosities formed during casting solidification.

Słowa kluczowe

EN

Hadfield cast steel; hot cracking; solidification brittleness

PL

staliwo Hadfielda; pękanie gorące; kruchość krzepnięcia

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2009
• Tom: Vol. 9, iss. 4
• Strony: 17--22
• Opis fizyczny: Bibliogr. 7 poz., rys., tab., wykr.

Twórcy

autor

Chojecki A.

autor

Telejko I.

• University of Sciences and Technology, 30-059 Kraków Reymonta 23 Poland,

Bibliografia

• [1] Kniaginin G.: Staliwo. Metalurgia i Odlewnictwo. Ed. Śląsk, 1977.
• [2] Chojecki A., Telejko I.: Odlewnictwo staliwa. Ed. Akapit, Kraków 2003.
• [3] Chojecki A., Telejko I., Kozelsky P.: Liquid metal embrittlement phenomena within the solidification range. In:: New Challenges in Mesomechanics, v.1, pp 175-181, Aalborg Univ., Aalborg 2002.
• [4] Telejko I., Chojecki A., Dobosz S.: Hot tearing formation in cast steel: In: New Challenges in Mesomechanics, v.2, pp 482-501, Aalborg Univ., Aalborg 2002.
• [5] Chojecki A., Telejko I., Tasak E., Kozelsky P. : Ocena skłonności do pęknięć odlewów w zakresie temperatury krzepnięcia. Materialove inzinierstvo ( Materials Engineering) v. 10, nr 3, 2003, pp. 31-34.
• [6] Chojecki A., Telejko I., Kozelsky P.: Oddziaływanie fazy ciekłej jako przyczyna kruchości stopów w zakresie temperatur krzepnięcia. Trans. of XIII Konf. Sprawozdawczej Komitetu Metalurgii PAN, Krynica 2002, t.2, pp.98-102.
• [7] Rappaz, M. et al.: Metall. and Materials Trans., 30, 1999, ser.A.