Effects of equal channel angular extrusion on microstructure, strength and ballistic performance of AA5754 plates

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Abstract

The microstructure, hardness, tensile properties and ballistic performance have been investigated in thick plates of the AA5754 alloy both in a coarse-grained as-received condition and after 4 passes of equal channel angular extrusion (ECAE) conducted at elevated temperatures. It is found that ECAE refines the microstructure to an average subgrain size of 0.3 μm, which results in significantly increased hardness and strength. Although ductility decreases due to ECAE, the uniform elongation is still fairly large, ~10%. The ballistic performance of the ECAE-processed material is found to be substantially better than that of the as-received condition.
Original languageEnglish
JournalProceedings of the Risø International Symposium on Materials Science
Volume35
Pages (from-to)389-395
ISSN0907-0079
Publication statusPublished - 2014
Event35th Risø International Symposium on Materials Science : New Frontiers of Nanometals - DTU, Risø Campus, Roskilde, Denmark
Duration: 1 Sep 20145 Sep 2014
Conference number: 35

Conference

Conference35th Risø International Symposium on Materials Science : New Frontiers of Nanometals
Number35
LocationDTU, Risø Campus
CountryDenmark
CityRoskilde
Period01/09/201405/09/2014

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