Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
EVALUATION OF THE ELECTRICAL AND MECHANICAL PROPERTIES OF ALLOY AL-0.25%CU-0.7%SI-1.0%MG-0.2%FE FOR DETERMINATION OF TERMORRESISTIVITY
Submission Author:
BEATRIZ SEABRA MELO , PA
Co-Authors:
BEATRIZ SEABRA MELO, Vinicius Silva, Andrey Coelho das Neves, Gustavo Rebelo, Carlos Vinícius de Paes Santos, Marielle Vital, JOSÉ MARIA DO VALE QUARESMA
Presenter: Andrey Coelho das Neves
doi://10.26678/ABCM.COBEM2019.COB2019-1983
Abstract
The growing demand for electricity makes it necessary to increase the degree of efficiency in the generation, transmission and distribution of electricity. The high electrical conductivity of aluminum, coupled with low specific gravity and reasonable mechanical resistance, classifies it as potential material to meet the needs of the current context. The present work proposes to characterize the electrical and mechanical behavior of alloy 0.25%Cu-0.7%Si1.0%Mg-0.2%Fe in order to classify it as thermoresistant or not. The alloy was solidified into a U-shaped metal mold and, after being demolded, was cut to pass through machining and rolling until it became a 3 mm diameter wire. One part of the wires was maintained without heat treatment and the other part was subjected to 1-hour heat treatment in the oven following two normative conditions: the COPPEL protocol and ASTM B941 in the temperatures of 230ºC and 280ºC, respectively; then the electric conductivity and tensile tests were performed. The results showed that the sample with the best mechanical performance was without heat treatment, and the most satisfactory performance for the electrical conductivity occurred when the proof body was submitted to 230ºC for 1 hour.
Keywords
Aluminium Alloy, Termorresistivity, Rolling, Electrical Conductivity, Tensile Test
