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1 Journal of Achievements in Materials and Manufacturing Engineering

1 2015

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Evaluation of microstructure and chosen properties of zinc and its alloys

Jonda E., Labisz K., Dobrzański L. A., Siomin Ł.

Journal of Achievements in Materials and Manufacturing Engineering

2015

Vol. 70, nr 1

22--28

Purpose: This paper presents especially the results of microstructure and properties investigation results of selected zinc (Zn) and zinc alloys (ZnAl15). In the frame work of this paper were performed investigations of the microstructure using light and scanning electron microscopy as well as analysis of the chemical composition of the tested materials, there are also carried out. Design/methodology/approach: The investigations were performed on samples of pure Zn as well as of zinc-aluminium alloy ZnAl115 with the chemical composition conforming with the commercial standard. Material for the investigation was provided in the form of a wire having a diameter of 3 mm and a length of 80 mm, 130 mm and 180mm respectively, subjected to cold working consisting in pulling. Findings: The presented tests results carried out using light microscopy allowed the determination of the microstructures obtained after the production process of materials from pure zinc and selected zinc alloys. The observations made using the scanning electron microscope revealed that the decohesion after the static tensile strength test the investigated materials are characterized by a regular (circular) fracture. Pure zinc is characterized by the predominance of mixed fracture with the dominance of brittle fracture areas, whereas the zinc alloys reveals rather a ductile fracture. Practical implications: This paper deal with the investigations concerning structure an properties of pure zinc and zinc alloys with additional elements as well as impurities coming from possible recycling procedure or environmental pollution source and its appliance for further application. Originality/value: Zinc is the fourth most widely used metal in the world after iron, aluminium and copper.