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Solid state recycling of 5083 Al alloy by hot extrusion

Version 2 2024-06-17, 07:01
Version 1 2014-10-28, 08:59
journal contribution
posted on 2024-06-17, 07:01 authored by Y Chino, M Mabuchi, K Shimojima, H Hosokawa, Y Yamada, C Wen, H Iwasaki
The machined chips of 5083 Al alloy were recycled by hot extrusion at 723 K with an extrusion ratio of 44:1 in air. Corrosion and mechanical properties of the recycled specimens have been compared with those of a virgin extrusion which was processed from the ingot block. As a result of salt immersion tests, mass loss of the recycled specimen was not less than twice of that of the virgin extrusion. The deterioration in corrosion properties for the recycled specimen was attributed to the excessive contamination of Fe which promoted galvanic corrosion. As a result of tensile tests, the recycled specimen exhibited a good combination of high strength and high elongation to failure at room temperature. The excellent mechanical properties for the recycled specimen were attributed to the refined microstructure. However, the elongation to failure of the recycled specimen at elevated temperatures more than 573 K was lower than that of the virgin extrusion. The contamination of oxide particles is likely to be responsible for the lower elongation in the solid recycled specimen.

History

Journal

Transaction of the materials research society of japan

Volume

29

Pagination

1893-1896

Location

Tokyo, Japan

ISSN

1382-3469

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Issue

5

Publisher

Materials Research Society of Japan

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