Manufacturing Technology 2017, 17(1):44-48 | DOI: 10.21062/ujep/x.2017/a/1213-2489/MT/17/1/44

Comparison of the Structure of CuZn40MnAl Alloy Casted into Sand and Metal Moulds

Pavel Kejzlar1, Jiří Machuta2, Iva Nová2
1 Institute for Nanomaterials, Advanced technologies and Innovation, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec, Czech Republic
2 Faculty of Mechanical Engineering, Technical University of Liberec, Studentská 2, 461 17 Liberec 1, Czech Republic

CuZn brasses are used for manufacturing highly stressed structural comonents. Their mechanical properties as e.g. strenth, toughness or wear resistance are affected not only by their chemical composition, but also by their structure. This paper is dedicated to the study and comparison of the structure of sand- and metal mould casted Cu40Zn alloy. Scanning electron microscopy supplied by energy dispersive spectroscopy and electron backscatter diffraction were used to evaluate the structure of both samples. Casting into the metal mould produces approximately five times finer grain structure compared to the sand mould. EBSD orientation mapping revealed a strong correlation between both matrix phases, αCu and β' phase. Also, the size of Fe2MnSi ternary precipitates is affected by the cooling rate.

Keywords: Brass, Structure, Casting, EBSD

Published: February 1, 2017  Show citation

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Kejzlar P, Machuta J, Nová I. Comparison of the Structure of CuZn40MnAl Alloy Casted into Sand and Metal Moulds. Manufacturing Technology. 2017;17(1):44-48. doi: 10.21062/ujep/x.2017/a/1213-2489/MT/17/1/44.
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