The influence of wall thickness on the microstructure of bronze BA1055 with the additions of Si, Cr, Mo and/or W

• Autorzy: Pisarek B. P.
• Języki publikacji: EN

Abstrakty

EN

Aluminium bronzes belong to the high-grade constructional materials applied on the put under strongly load pieces of machines, about good sliding, resistant properties on corrosion both in the cast state how and after the thermal processing. It moves to them Cr and Si in the aim of the improvement of their usable proprieties. Additions Mo and/or W were not applied so far in the larger concentration, these elements were introduced to the melts of the copper as the components of modifiers. It was worked out therefore the new kind of bronzes casting including these elements. Make additions to the Cu-Al-Fe-Ni bronze of Si, Cr, Mo and/or W in the rise of these properties makes possible. The investigations of the influence of the wall thickness of the cast on size of crystallites were conducted: the primary phase [beta] and intermetallic phase ę and the width separates of the secondary phase [kappa] precipitate at phase boundary. It results from conducted investigations, that in the aluminium bronze BA1055 after simultaneous makes additions Si, Cr, Mo and in the primary phase [beta] it undergoes considerable reducing size [...]

Słowa kluczowe

EN

metallography; grain of microstructure; microstructure of bronze; aluminium bronzes; components; cast state; mechanical properties

PL

metalografia; ziarna mikrostruktury; brązy aluminiowe; komponenty

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 4
• Strony: 185--192
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Pisarek B. P.

• Technical University of Lodz, Department of Materials Engineering and Production Systems, 1/15 Stefanowskiego St. 90-924 Lodz, Poland,

Bibliografia

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• [2] F. Romankiewicz, Modification of cuprum and its alloys, Wydawnictwo Naukowe Komisji Nauki o Materiałach PAN, Poznań-Zielona Góra 1999.
• [3] J. Szala, Application of the methods of the computer scanning of image to the quantitative estimate of the structure of materials, Wydawnictwo Politechniki Śląskiej, 2001 (in Polish).
• [4] Computer Scanning Systems - Electronic Document - Text File - Mode of Access: http://www.multiscan.com.pl
• [5] J. Ryś, Stereology of materials, Fotobit Design, Krakow 1995 (in Polish).
• [6] B.P. Pisarek, Influence Cr on crystallization and the phase transformation of the Bronze BA1044, Archives of Foundry Engineering, Vol. 7, Issue 3, July-September 2007, 129-136.
• [7] B.P. Pisarek, The crystallization of the aluminium bronze with additions of Si, Cr, Mo and/or W, Archives of Materials Science and Engineering, Vol. 28, Iss. 8, 2007, 461-466.
• [8] B.P. Pisarek, Abrasive wear of BA1055 bronze with additives of Si, Cr, Mo and/or W, Archives of Materials Science and Engineering, Vol. 28, Iss. 8, august 2008, 467-471.
• [9] M. Cook, W.P. Fentiman, E. Davis, Observations on the Structure and properties of Wrought Copper-Aluminium-Nickel-Iron Alloys. J. Inst. Met., 80, 419-429, 1951/52.
• [10] P. Brezina: Giesserei-Forshung, 25, (1973)125-143.