Effect of the T6 Heat Treatment on Microhardness of a Directionally Solidified Aluminum-Based 319 Alloy
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 sol...
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2017-11-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000800662&tlng=en |
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| author | Igor Alexsander Barbosa Magno Fabricio Vinicius Andrade de Souza André dos Santos Barros Marlo Oliveira Costa Jacson Malcher Nascimento Thiago Antônio Paixão de Sousa Costa Otávio Fernandes Lima da Rocha |
| author_facet | Igor Alexsander Barbosa Magno Fabricio Vinicius Andrade de Souza André dos Santos Barros Marlo Oliveira Costa Jacson Malcher Nascimento Thiago Antônio Paixão de Sousa Costa Otávio Fernandes Lima da Rocha |
| author_sort | Igor Alexsander Barbosa Magno |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-11T16:39:29Z |
| format | Article |
| id | doaj.art-980c1e8090d64902a180bfe9eb32e243 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-04-11T16:39:29Z |
| publishDate | 2017-11-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-980c1e8090d64902a180bfe9eb32e2432022-12-22T04:13:43ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392017-11-0120suppl 266266610.1590/1980-5373-mr-2016-0961Effect of the T6 Heat Treatment on Microhardness of a Directionally Solidified Aluminum-Based 319 AlloyIgor Alexsander Barbosa MagnoFabricio Vinicius Andrade de SouzaAndré dos Santos BarrosMarlo Oliveira CostaJacson Malcher NascimentoThiago Antônio Paixão de Sousa CostaOtávio Fernandes Lima da RochaAluminum 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000800662&tlng=enT6 Heat TreatmentMicrostructureAl-Cu-Si Alloys |
| spellingShingle | Igor Alexsander Barbosa Magno Fabricio Vinicius Andrade de Souza André dos Santos Barros Marlo Oliveira Costa Jacson Malcher Nascimento Thiago Antônio Paixão de Sousa Costa Otávio Fernandes Lima da Rocha Effect of the T6 Heat Treatment on Microhardness of a Directionally Solidified Aluminum-Based 319 Alloy Materials Research T6 Heat Treatment Microstructure Al-Cu-Si Alloys |
| title | Effect of the T6 Heat Treatment on Microhardness of a Directionally Solidified Aluminum-Based 319 Alloy |
| title_full | Effect of the T6 Heat Treatment on Microhardness of a Directionally Solidified Aluminum-Based 319 Alloy |
| title_fullStr | Effect of the T6 Heat Treatment on Microhardness of a Directionally Solidified Aluminum-Based 319 Alloy |
| title_full_unstemmed | Effect of the T6 Heat Treatment on Microhardness of a Directionally Solidified Aluminum-Based 319 Alloy |
| title_short | Effect of the T6 Heat Treatment on Microhardness of a Directionally Solidified Aluminum-Based 319 Alloy |
| title_sort | effect of the t6 heat treatment on microhardness of a directionally solidified aluminum based 319 alloy |
| topic | T6 Heat Treatment Microstructure Al-Cu-Si Alloys |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000800662&tlng=en |
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