Unique microstructure and property of a 2024 aluminum alloy subjected to upsetting extrusion multiple processing

  • Xiaoqiang Li*
  • , Yuanyuan Li
  • , Weiping Chen
  • , Yan Long
  • , Lianxi Hu
  • , Erde Wang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The microstructure and hardness of a 2024 aluminum alloy subjected to multi-pass upsetting extrusion at ambient temperature were studied. Experimental results indicated that with the number of upsetting extrusion passes increasing, the grains of the alloy are gradually refined and the hardness increases correspondingly. After ten passes of upsetting extrusion processing, the grain size decreases to less than 200 nm in diameter and the sample maintains its original shape, while the hardness is double owing to equal-axial ultrafine grains and work hardening effect caused by large plastic deformation.

Original languageEnglish
Pages (from-to)74-78
Number of pages5
JournalRare Metals
Volume23
Issue number1
StatePublished - Mar 2004
Externally publishedYes

Keywords

  • Metal
  • Microstructure
  • Property
  • Upsetting extrusion multiple processing

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