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metadata.dc.type: Artigo de Periódico
Issue Date: Nov-2017
metadata.dc.creator: MAGNO, Igor Alexsander Barbosa
SOUZA, Fabricio Vinicius Andrade de
BARROS, André dos Santos
COSTA, Marlo Oliveira
NASCIMENTO, Jacson Malcher
COSTA, Thiago Antônio Paixão de Sousa
ROCHA, Otávio Fernandes Lima da
metadata.dc.description.affiliation: MAGNO, I. A. B.; SOUZA, F. V. A.; BARROS, A. S.;NASCIMENTO, J. M.; ROCHA, O. F. L. Universidade Federa do Pará
Title: Effect of the T6 Heat Treatment on Microhardness of a Directionally Solidified Aluminum-Based 319 Alloy
Citation: MAGNO, Igor Alexsander Barbosa et al . Effect of the T6 Heat Treatment on Microhardness of a Directionally Solidified Aluminum-Based 319 Alloy. Materials Research, São Carlos, v. 20, supl. 2, p. 662-666, 2017. Disponível em: Acesso em;.
Abstract: Aluminum alloys of the ANSI series 319 present Si and Cu as the main alloying elements and the mechanical strength of these alloys can be improved by the precipitation of the metastable Al2Cu phase during the ageing heat treatment. In this paper, the Al-5.5wt.%Si-3wt.%Cu alloy was elaborated and solidified in a water-cooled horizontal directional solidification device. The as-cast ingot was subjected to the precipitation hardening heat treatment (T6 heat treatment), which consisted of: solution for 5 h at 490°C±2°C, followed by quenching in water at 60°C±2°C and ageing for 3 h at 155°C±2°C, and cooling-air. Secondary dendrite arm spacing (λ2) measurements were carried out before and after T6 heat treatment. The mechanical strength of the alloy was investigated by the microhardness test. It has been found that the heat treatment did not influence the λ2 values, however, highest HV values have been observed for the heat-treated samples.
Keywords: T6 Heat Treatment
Al-Cu-Si Alloys
Series/Report no.: Materials Research
ISSN: 1980-5373 Brasil
Publisher: Universidade Federal do Pará
metadata.dc.publisher.initials: UFPA
metadata.dc.rights: Acesso Aberto
Appears in Collections:Artigos Científicos - ITEC

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