Effect of inoculation on high temperature plastic properties of the centrifugally cast Cr-Ni-Nb steel

• Autorzy: Tęcza G. , Głownia J.
• Języki publikacji: EN

Abstrakty

EN

From the centrifugally cast sleeve segments, in direction parallel to the axis, the specimens for mechanical tests were cut out in a way such as to get in one batch of the specimens a structure composed of columnar crystals and in another batch of the specimens a structure composed of equiaxial crystals. The specimens were subjected to a tensile test at the temperature of 820°C. It has been observed that the two zones of crystals differ quite considerably in the values of elongation, while preserving similar tensile strength levels.

Słowa kluczowe

EN

high temperature mechanical properties; austenitic Cr-Ni-Nb cast steel; centrifugal casting; columnar and equiaxial structure

PL

właściwości mechaniczne; staliwo austenityczne Cr-Ni-Nb; odlewanie odśrodkowe

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 4
• Strony: 209--212
• Opis fizyczny: Bibliogr. 6 poz., rys., tab.

Twórcy

autor

Tęcza G.

autor

Głownia J.

• AGH, Faculty of Foundry Engineering, Department of Cast Alloys and Composites Engineering, Reymonta St. 23, 30-059 Cracow, Poland,

Bibliografia

• [1] Z. Bojarski i in., Exploitation problems of steam reformer catalytic tubes, Praca naukowa Uniwersytetu Śląskiego nr 266, Ed. of the Silesian University (1978) (in Polish).
• [2] J. Łabanowski, Examination of degradation process of catalytic tubes during exploitation in reformer methane, Wydawnictwo Politechniki Gdańskiej, Gdańsk (2003) (in Polish).
• [3] J. Barcik, Alloys on tubes. Chemical compositions; structure and exploitation properties. Ed. of the Silesian University, Katowice (1995).
• [4] R. Zapała, J. Głownia, W. Ratuszek, G. Tęcza, Microstructural investigations of Cr-Ni-Nb cast steel with microelements used as tubes for petrochemical installations. Polska Metalurgia w latach 2002-2006, Wydawnictwo Naukowe Akapit, Kraków 2006, 431-436.
• [5] M. Garbniak, B. Piekarski, Microstructure of as-cast austenitic cast steel type G-X30NiCrSi30.18 with additions of Nb and Ti. Proc. Int. Conf. EUROMAT'94, Hungary (1994), 555-559.
• [6] G. Tęcza, J. Głownia, G. Boczkal, R. Zapała, Yield strenght and structural characterization of Cr25-Ni32-Nb steel modified by Ti, Zr, Ce and cast by centrifugal method. Polska Metalurgia w latach 2002-2006, Wydawnictwo Naukowe Akapit, Kraków 2006, 329-334 (in Polish).