Study on the Effect of Production Parameters and Raw Materials Used on the Mechanical Properties of Leaded Brass (CuZn40Pb2) Alloy
| Autor: | M. Samuel, Abdulsalam A. Fadhil, Sami A. Ajeel, Tawakol A. Enab, Berlanty A. Iskander |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Machinability Alloy Metallurgy 02 engineering and technology Work hardening engineering.material 01 natural sciences Casting Brass 020303 mechanical engineering & transports 0203 mechanical engineering visual_art 0103 physical sciences Ultimate tensile strength engineering visual_art.visual_art_medium Extrusion Tensile testing |
| Zdroj: | ResearcherID |
| ISSN: | 2331-4249 2331-4222 |
| DOI: | 10.4236/wjet.2017.52028 |
| Popis: | Leaded brass alloys used progressively in many applications such as gas valves production owing to their excellent machinability, corrosion resistance and some other specifications. However, the production processes of these alloys involve some problems appearing in the last activities of production as a result of cumulative defects of previous production processes. Therefore, the current investigation studies the effect of process parameters during casting, hot extrusion and cold drawing production stages of CuZn40Pb2 leaded brass alloy on the mechanical properties. Starting with casting process, two types of charges were used. The first charge consists of 100% recycles while the second contains 30% of pure materials such as Cu, Zn and Pb in addition to the recycles. For each production stage, alloy hardness, micro-hardness, ultimate tensile strength and elongation were examined. The results illustrated that high hardness values are obtained during casting process due to some impurities such as iron and the effect of cooling rate through solidification. The hardness values decrease during extrusion process and then rise again by cold drawing for the charge of 30% pure materials. Micro-hardness values for the fractured tensile test samples appeared higher than others due to work hardening effect. The best mechanical properties as ultimate tensile strength of CuZn40Pb2 alloy products are appeared into cold forming samples with the 30% pure material added. |
| Databáze: | OpenAIRE |
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