Bibliographic citations
Alvarado, E., Palacios, A. (2024). Efecto del porcentaje en peso de cobre en la aleación zinc – 22% aluminio (ZA-22) sobre la dureza, resistencia a la tracción, tensión de fluencia, ductilidad y resistencia al desgaste [Universidad Nacional de Trujillo]. https://hdl.handle.net/20.500.14414/21094
Alvarado, E., Palacios, A. Efecto del porcentaje en peso de cobre en la aleación zinc – 22% aluminio (ZA-22) sobre la dureza, resistencia a la tracción, tensión de fluencia, ductilidad y resistencia al desgaste []. PE: Universidad Nacional de Trujillo; 2024. https://hdl.handle.net/20.500.14414/21094
@misc{renati/1043527,
title = "Efecto del porcentaje en peso de cobre en la aleación zinc – 22% aluminio (ZA-22) sobre la dureza, resistencia a la tracción, tensión de fluencia, ductilidad y resistencia al desgaste",
author = "Palacios Mejia, Alex Ivan",
publisher = "Universidad Nacional de Trujillo",
year = "2024"
}
The effect of the weight percentages of copper in the ranges of 0.5 to 5.0% in the zinc – 22% aluminum alloys (ZA-22) was studied on their hardness, tensile strength, yield stress, ductility and resistance to the wear and tear. The alloys were produced in the form of a cylindrical bar with a diameter of 15 mm x 180 mm in length and discs with external diameters of 40 mm, internal diameters of 20 mm by 15 mm density that were cast in dry sand molds, where the specimen for tensile testing in accordance with ASTM E-8 standards, specimens for hardness tests in accordance with ASTM E-10 standards, and wear test specimen in accordance with ASTM G-77 standards. The result shows the percentages by weight of copper, ranging from 0.5 to 5.0%, greatly increase the hardness, tensile strength, yield stress, ductility and wear resistance, because the values obtained were higher than that of the zinc alloy – 22% aluminum without copper (0% Cu). The highest value obtained for the property under study was for the alloys, zinc – 22% aluminum with 2% by weight of copper. At values greater than 2.0% copper, the properties under study decrease slightly. Microstructurally, the zinc – 22% aluminum alloys with a copper weight percentage of 0.5 to 2.0% consist of dendrites formed by alpha phase (α) and gamma phase (), particles of stoichiometric CuZn5 compounds; and alloys greater than 2.0 to 5.0% Cu consist of pearlite (α + ) and interdendritic intermetallic compounds (CuZn4) y (Al4 – Cu3 – Zn), it is also observed that at percentages greater than 2% of copper in In zinc alloys - 22% aluminum (ZA-22) there is formation of pearlite (α + ), which means that the copper in the alloy is pearlizing. The result obtained was contrasted through statistical analysis, with confidence levels of 95%.
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