Effect of Extrusion Route on Grain Refinement during ECAP Process

The effect of the extrusion route (A, C and BC) on grain refinement during ECAP process in 99.9995% (5N5) high pure aluminum using a die with a channel-intersection angle 90° was investigated. It was found through experiment that, the grain was very coarse in the cast ingot of 5N5 high pure aluminum...

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Bibliographic Details
Published inAdvanced materials research Vol. 790; pp. 90 - 93
Main Authors Gao, Hai Tao, Ban, Chun Yan, Han, Dong, Li, Chuan Qiang, Cui, Jian Zhong
Format Journal Article
LanguageEnglish
Published Trans Tech Publications Ltd 04.09.2013
Subjects
ECAP
High Pure Aluminium
Extrusion Route
Grain Refinement
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Summary:The effect of the extrusion route (A, C and BC) on grain refinement during ECAP process in 99.9995% (5N5) high pure aluminum using a die with a channel-intersection angle 90° was investigated. It was found through experiment that, the grain was very coarse in the cast ingot of 5N5 high pure aluminum, and the average grain size is about 50~60mm. After two ECAP passes, the average grain size is 300μm, 550μm and 200μm respectively with the extrusion route of Route A, C and BC. After eight ECAP passes, the average grain size is 100μm, 100μm and 30μm respectively with the extrusion route of Route A, C and BC. It indicates that the route BC is more effective than Route A and C. TEM micrograph of 5N5 high pure Al with different ECAP pass under Route BC was studied.
Bibliography:Selected, peer reviewed papers from the 2013 International Conference on Advanced Engineering Materials and Architecture Science (ICAEMAS 2013), July 27-28, 2013, Xi’an, Shaanxi, China
ISSN:1022-6680
1662-8985
1662-8985
DOI:10.4028/www.scientific.net/AMR.790.90