Compressive behavior and deformation kinetics of ultrafine grained aluminum processed by equal channel angular pressing

Jin Su, Zhong bin Tang, Cun xian Wang, Tian Ye, Tao Suo, Yu long Li

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

In the present work, the uniaxial compressive mechanical proper\ties of ultrafine grained (UFG) aluminum produced by equal channel angular pressing method were investigated experimentally over a wide temperatures ranging from 77 to 473 K under both quasi-static and dynamic loading conditions. Based on the experimental results, the strain rate, temperature sensitivity, and the apparent activation volume were estimated. The coupling effects of both experimental temperature and applied strain rate on thermal-activated plastic deformation behavior were also investigated. Based on the thermal activation theory, the rate-controlling mechanisms for the UFG aluminum under both quasi-static and dynamic loading conditions were discussed.

Original languageEnglish
Pages (from-to)56-77
Number of pages22
JournalInternational Journal of Smart and Nano Materials
Volume8
Issue number1
DOIs
StatePublished - 2 Jan 2017

Keywords

  • mechanical behavior
  • rate-controlling mechanism
  • strain rate sensitivity
  • temperature sensitivity
  • Ultrafine-grained aluminum

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