The Change of Microstructure and Hardness of Duo-Casted Al3003/Al4004 Clad Material during Extrusion Process release_gtm4fuutkvc6pk7vc7zerqpucq

by Jin-Kyung Lee, Sang-Pill Lee, Jong-Sup Lee, Sangmok Lee, Ilguk Jo, Dong-Su Bae

Published in Metals by MDPI AG.

2020   Volume 10, Issue 12, p1648

Abstract

This study was carried out to observe and measure the microstructure, distance between dendrite arms, aspect ratio, and Knoop hardness change of extruded material formed by the hydro co-extrusion of Al3003/Al4004 clad material manufactured by the duo-casting method. The specimen of duo-casted Al3003/Al4004 clad materials was circle shaped; it was composed of Al3003 (outside) and Al4004 (inside) materials. The manufacturing conditions of the hydro co-extruded specimen were 423 K temperature and 6.5 ratio of extrusion. At the interface of the duo-casted Al3003/Al4004 clad material, a non-junction at the interface and non-metallic inclusions of Si- and Mn-based oxides were observed. Al3003 exhibits equiaxed crystals; Al4004 has a casted structure with dendrites before extrusion, showed slight deformation during extrusion, and then finally exhibited completely deformed structures after extrusion. In the cast material, the distance between dendrite arms increased, and the aspect ratio of dendrites tended to decrease from the surface to the center. However, in the case of the extruded material, neither Al3003 nor Al4004 changed significantly from the surface to the inside. As extrusion progressed, the Knoop hardness value at the interface of Al3003/Al4004 increased rapidly compared with those of Al3003 and Al4004 matrixes.
In application/xml+jats format

Archived Files and Locations

application/pdf  6.6 MB
file_36qtqq32vzhwpm6okehxoskv2m
res.mdpi.com (publisher)
web.archive.org (webarchive)
Read Archived PDF
Preserved and Accessible
Type  article-journal
Stage   published
Date   2020-12-07
Language   en ?
Container Metadata
Open Access Publication
In DOAJ
In ISSN ROAD
In Keepers Registry
ISSN-L:  2075-4701
Work Entity
access all versions, variants, and formats of this works (eg, pre-prints)
Catalog Record
Revision: 85d41c0a-5324-4048-879d-106f808a8a8b
API URL: JSON