Evaluation of Precipitates Type in Brasses as a Function of Charge Material

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Trial series of cast alloy MO59 obtained from qualified scrap was investigated. SEM and TEM of resulting precipitates were conducted. The SEM analysis demonstrated the dependence of silicon, phosphorus, iron, chromium and nickel in the composition of the so-called hard precipitates. TEM analysis showed the formation of phase AlFeSi and AlCr. Made studies have shown the important role of the composition of the batch melts brass CuZn39Pb2 type. The analysis of SEM and TEM resulting precipitates pointed to the formation of various forms of divisions, only one of which was described in the literature character of the so-called hard inclusions. The SEM studies demonstrated the dependence of the occurrence of inclusions rich in silicon, phosphorus, iron, chromium and nickel. In contrast, additional TEM analysis indicated the formation of AlFeSi phase type and AlCr. The results of the analyses referred to the structure of the batch. Due to the difficulty of obtaining recycled materials that do not contain these elements necessary to carry out further analyzes in the direction of defining the role of phosphorus in the formation of the so-called hard inclusions.

[1] Biernat, S. & Bydałek, A.W. (2014). Optimization of the brass melting. Archives of Foundry Engineering. 14(3), 5-10. ISSN (1897-3310).

[2] Bydałek, A.W. & Bydałek, A. (2014). The results of the brass refining process in the reducer conditions. Archives of Foundry Engineering. 14(1), 21-24. ISSN (1897-3310).

[3] Bydałek, A.W. & Biernat, S. (2012). The estimation of quality refining slag for the brass gas – slag refining.

[4] Bydałek, A.W., Paul, H., Najman, K., Balcerek, D. & Janas, K. (2006). Intermatalic phasis in the brass in the continous casting. Archives of Foundry. 6(18), 251-256. ISSN 1642-5308. (in Polish).

[5] Romankiewicz, F. (1994). Materials of the Conference of Dolnośląskiej, Szklarska Poręba, 213.

[6] Wierzbicka, B. & Czyż, M. (1999). Acta Metallurgica Slovaca. 5(2), 443.

[7] Bydałek, A.W. (2001). Conf. Proced. Technologia 2001, Bratyslawa, 663.

[8] Ellner, M. & Predel, B. (1995). Intermetallic Compounds, Principles and Practice, J.H. Westbrook and R. Fleischer (eds.), John Wiley & Sons Ltd, 1 (91).

[9] Stolarz, S. (1974). Compounds and high-melting phases. Katowice: Publisher Śląsk.

[10] Biernat, S., Bydałek, A.W., Wołczyński, W. & Najman, K. Analysis of the possibility of calculating the mass on the example of brass. Archives of Foundry Engineering. (in print).

[11] Kondracki, M. & Szajnar, J. (2007). Possibilities for leaded brass replacement with multi-component brass. Archives of Foundry Engineering. 7(2), 57-64. ISSN 1897-3310.

[12] Kondracki, M., Gawroński, J. & Szajnar, J. (2006). TDA method application for structure evaluation of non-leaded fixture brasses. Archives of Foundry. 6(19), 149-156. ISSN1642-5308.

Archives of Foundry Engineering

The Journal of Polish Academy of Sciences

Journal Information

CiteScore 2016: 0.42

SCImago Journal Rank (SJR) 2016: 0.192
Source Normalized Impact per Paper (SNIP) 2016: 0.316


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