Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
CHARACTERIZATION OF AL-6%MG MODIFIED WITH 0.15% OF ZR ALLOY AND SUBMITTED STRAIN RELIEF THE 400°C/1H
Submission Author:
Brenda Daniel , PA
Co-Authors:
Brenda Daniel, BEATRIZ SEABRA MELO, Marcus Vinícius Wanderley, Ricardo França , Natália Luiza Abucater Brum, JOSÉ MARIA DO VALE QUARESMA
Presenter: BEATRIZ SEABRA MELO
doi://10.26678/ABCM.COBEM2019.COB2019-2427
Abstract
The work aims to analyze the mechanical and electrical characteristics of Al-6% Mg alloy with the addition of 0.15% of Zr and the influence of the thermal stress relief treatment. The alloys were cast and cast in Cu (section of the Properzi wheel section) cooled in water. Cross sections of the ingot were obtained for metallographic characterization. It was divided into two groups: the CTT and the STT, the heat treatment was at 400 ° C for 1 hour. The tensile and electrical resistance tests were performed for mechanical and electrical characterization, respectively. The results showed that the addition of Zr generated grain refining in the structure. Through the electrical conductivity test, an average value of 30.34% IACS was obtained. The limit of tensile strength and the elongation of the alloys before and after the heat treatment were evaluated. The treatment resulted in loss of LRT and real deformation gain of the samples. In the curves resulting from the tensile tests, it was noted that the alloys were in the plastic zone. For the STT alloys the addition of Zr decreased the occurrence of this phenomenon. However, the CTT alloys had their plastic zones extended and the serrations were more evident.
Keywords
alluminum alloys, strain relief, mechanical and electrical characterization
