Rapid hardening induced by electric pulse annealing in nanostructured pure aluminum

Publication: Research - peer-reviewJournal article – Annual report year: 2011

  • Author: Zeng, Wei

    State Key Lab. of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University (CN)

  • Author: Shen, Yao

    State Key Lab. of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University (CN)

  • Author: Zhang, Ning

    State Key Lab. of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University (CN)

  • Author: Huang, Xiaoxu

    Metal Structures in Four Dimensions, Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark, Denmark

  • Author: Wang, Jeff

    General Motors China Science Laboratory (CN)

  • Author: Shan, Aidang

    State Key Lab. of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University (CN)

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Nanostructured pure aluminum was fabricated by heavy cold-rolling and then subjected to recovery annealing either by applying electric pulse annealing or by traditional air furnace annealing. Both annealing treatments resulted in an increase in yield strength due to the occurrence of a “dislocation source-limited hardening” mechanism. However, the hardening kinetics was substantially faster for the electric pulse annealed material. Detailed microstructural characterization suggested that the rapid hardening during electric pulse annealing is related to an enhanced rate of recovery of dislocation structures.
Original languageEnglish
JournalScripta Materialia
Publication date2012
Volume66
Issue3-4
Pages147-150
ISSN1359-6462
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 2

Keywords

  • Materials characterization and modeling
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