Enhancement of strength and ductility of Al-Ag alloys processed by high-pressure torsion and aging

Seungwon Lee, Zenji Horita

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    This research was conducted by the application of high-pressure torsion (HPT) to Al-X wt pct Ag alloys (X = 5, 11, 20). Grain refinement was achieved to the size of ∼300 nm after HPT processing at room temperature. The aging behavior of the alloys after HPT processing was investigated using Vickers microhardness measurement, tensile testing, scanning electron microscopy, and transmission electron microscopy. This study confirms the dual effect of grain refinement and fine precipitation on the enhancement of the strength. It is also shown that at peak-aged condition, the tensile strength is enhanced while maintaining considerable ductility.

    Original languageEnglish
    Pages (from-to)3221-3231
    Number of pages11
    JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
    Volume44
    Issue number7
    DOIs
    Publication statusPublished - Jul 2013

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics
    • Mechanics of Materials
    • Metals and Alloys

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