Effect of cold rolling on the structure and hydrogen properties of AZ91. and AM6OD magnesium alloys processed by ECAP

Autor(es)

Jorge, Jr., Alberto Moreira ; Prolzofiev, Egor ; Martins Triques, Maria Regina ; Roche, Virginie ; Botta, Walter Jose ; Kiminami, Claudio Shyinti ; Raab, Georgy I. ; Valiev, Ruslan Z. ; Langdon, Terence G.

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 42, n. 34, p. 21822-21831, AUG 24 2017.
• Citações Web of Science: 4

Resumo

This investigation was conducted to evaluate the effect of cold rolling on the structure and hydrogen properties of two magnesium alloys, AZ91 and AM60D, after processing by equal channel angular pressing (ECAP). The results show that the use of cold rolling after ECAP significantly increases the preferential texture for hydrogenation and increases the potential for the use of these alloys as hydrogen storage materials. The ECAP was performed through two different numbers of passes in order to give different grain sizes and both materials were subsequently cold-rolled through the same numbers of passes for a comparison of the hydrogenation absorption. It is shown that the hydriding properties are enhanced by an (0001) texture which improves the kinetics primarily in the initial stages of hydrogenation. The results demonstrate that optimum sorption properties may be acquired through a combination of fine grains and appropriate texture. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 10/11477-4 - Processamento de ligas de Mg por deformação plástica severa para armazenamento de hidrogênio
• Beneficiário: Gisele Ferreira de Lima Andreani
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/05987-8 - Processamento e caracterização de ligas metálicas amorfas, metaestáveis e nano-estruturadas
• Beneficiário: Claudio Shyinti Kiminami
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 12/13179-6 - Estudo de ligas metálicas amorfas, metaestáveis e nano-estruturadas com ênfase em novas aplicações tecnológicas
• Beneficiário: Alberto Moreira Jorge Junior
• Modalidade de apoio: Bolsas no Exterior - Pesquisa
• Processo FAPESP: 11/51245-8 - Grain refinement and properties of ultrafine-grained AI, Mg and Ti alloys produced by equal-channel angular pressing with back-pressure
• Beneficiário: Alberto Moreira Jorge Junior
• Modalidade de apoio: Auxílio à Pesquisa - Regular