Structure and properties of new ecological copper alloys for fittings

• Autorzy: Juszczyk B. , Kulasa J. , Cwolek B. , Malec W. , Wierzbicki Ł.
• Języki publikacji: EN

Abstrakty

EN

The article presents the results of studies concerning the selection of the chemical composition of the new ecological copper alloys for fittings. It was analyzed, among other things, the impact of the content of bismuth, aluminum, iron and boron. Their solidification process was characterized on the grounds of thermal and derivative analysis (TDA). Also the microstructure and mechanical properties were analyzed. Casting properties were determined by the castability spiral test. It was found that zinc is an essential component of the tested group of alloys, determining the course of their crystallization, phase composition and microstructure. There was no significant effect from the other elements on the course of crystallization. The obtained results revealed that bismuth is the element of the strongest impact on the castability changes. The formulated alloys surpass the commonly used standardized alloy intended for components of fittings, namely MO59, in terms of casting and mechanical (hardness) properties.

Słowa kluczowe

EN

innovative casting material; innovative casting technology; ecological brass; thermal derivative analysis

PL

innowacyjny materiał odlewniczy; innowacyjna technologia odlewnicza; mosiądz ekologiczny; analiza termiczna; analiza derywacyjna

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2011
• Tom: Vol. 11, iss. 3 spec.
• Strony: 97--102
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Juszczyk B.

• Institute of Non-Ferrous Metals, Sowińskiego 5, 44-100 Gliwice, Poland

autor

Kulasa J.

• Institute of Non-Ferrous Metals, Sowińskiego 5, 44-100 Gliwice, Poland

autor

Cwolek B.

• Institute of Non-Ferrous Metals, Sowińskiego 5, 44-100 Gliwice, Poland

autor

Malec W.

• Institute of Non-Ferrous Metals, Sowińskiego 5, 44-100 Gliwice, Poland

autor

Wierzbicki Ł.

• Institute of Non-Ferrous Metals, Sowińskiego 5, 44-100 Gliwice, Poland

Bibliografia

• [1] www.mos.gov.pl “National Strategy for Reduction of Emissions of Heavy Metals” - 08.07.20011.
• [2] L. Ciura, B. Cwolek, W. Malec, Ł. Marchewka, Analysis of a possibility of lead elimination from the casting copper alloys, Rudy Metale, R 52, nr 5 (2007) 254-262.
• [3] Dyrektywa 98/83/EC z dnia 3 listopada 1998 “On the quality of water intended for human consumption”.
• [4] Z. Śmieszek, L. Ciura, B. Cwolek, W. Malec, B. Juszczyk, Structure and properties of copper ecological alloys designed for elements of fittings, Proceedings of Conference GDMB Copper 2010, vol. 1 - Downstream Fabrication, Application and New Products (2010) 255-270.
• [5] V.J. Keast, D.B. Williams, Quantitative compositional mapping of Bi segregation to grain boundaries in Cu, Acta Materialia, vol 47, No 15 (1999) 3999-4008.
• [6] Patent US 4879094.
• [7] M. Sadayappan, L.V. Whitin, M. Sahoo, A review of EnviroBrasses (SeBiLOY) containing bismuth and selenium for plumbing applications, Proceedings of the 65th World Foundry Congress, Korea (2002) 1061-1068.
• [8] S. Lassmann, W. Reif, Substitution von Blei durch Wismut in Rotgusslegierungen, Metall1, vol. 51, No 4 (1997) 186-189.
• [9] A. Janus, B. Ankudowicz B, Determination of the possibility of lead elimination in CuZn39Pb2 brass, Solidification of Metals and Alloys, v. 43 (2000) 291-296 (in Polish).
• [10] Z. Jura, Method for determining the spectral crystallization heat based on TDA test, Czestochowa University of Technology, Department of Metallurgy and Material Science, Częstochowa 1997 (doctor's dissertation) not published (in Polish).
• [11] A. Zyska, Z. Konopka, M. Łągiewka, M. Nadolski, Characteristics of squeeze cast AlZn5Mg alloy castings, Archives of Metallurgy and Materials, vol. 3, No 3 (2010).
• [12] F. Bińczyk, J. Śleziona, The ATD thermal analysis of selected nickel superalloys, v. 8, No 3 (2008) 5-8.
• [13] P. Villars, A. Prince, H. Okamoto, Handbook of ternary alloy phase diagrams, ASM International, 1997.
• [14] L. Ciura, B. Cwolek, W. Malec, Ł. Marchewka, Examination of castability, mechanical properties and structure of new ecological brasses for fittings, Rudy Metale, R 52, nr 5 (2007) 263-269.