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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Microstructural evolution of AA7050 al alloy processed by ECAP

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Autor(es):
Cardoso, E. K. [1] ; Guido, V. [1] ; Silva, G. [1] ; Botta Filho, W. [2] ; Jorge Junior, A. [2]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] UNIVAP, Sao Jose Dos Campos - Brazil
[2] Univ Fed Sao Carlos, Sao Carlos, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: MATERIA-RIO DE JANEIRO; v. 15, n. 2, p. 325-333, 2010.
Citações Web of Science: 0
Resumo

This work aimed to study the microstructural evolution of commercial aluminum alloy AA7050 in the solution treated condition (W) processed by equal channel angular pressing - ECAP. The analyses were made considering the effects of process parameters as temperature (Tamb and 150°C), processing route (A and B C) and number of passes. Optical microscopy (OM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used for microstructural characterization, and hardness tests for a preliminary assessment of mechanical properties. The results show that the refining of the microstructure by ECAP occurred by the formation of deformation bands, with the formation of dislocations cells and subgrains within these bands. The increase of the ECAP temperature led to the formation of more defined subgrains contours and intense precipitation of η phase in the form of spherical particles. The samples processed by Route B C present a more refined microstructure. (AU)

Processo FAPESP: 05/03440-5 - Processamento de ligas de alumínio por prensagem angular de seção transversal constante - ECAP
Beneficiário:Kátia Regina Cardoso
Modalidade de apoio: Auxílio à Pesquisa - Regular