Aging behavior of Al-Li-Cu-Mg alloy processed by high-pressure torsion

Seungwon Lee, Daichi Akama, Zenji Horita, Tetsuya Masuda, Shoichi Hirosawa, Kenji Matsuda

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    This study presents an application of high-pressure torsion (HPT) to an Al-Li-Cu-Mg alloy (2091). The alloy was subjected to solid solution treatment at 505°C for 30 minutes and was processed by HPT under 6 GPa for 5 revolutions at room temperature. The hardness increased with straining and saturated to a constant level at 225 Hv. Aging was undertaken on the HPT-processed alloy at 100, 150 and 190°C for the total periods up to 9.3 days. The aging treatment led to a further increase in the hardness to ∼275 Hv. It is shown that the simultaneous strengthening of the alloy due to grain refinement and age hardening was successfully achieved by application of HPT and subsequent aging treatment. The enhancement of the strength is prominent when compared with the application of a conventional rolling process.

    Original languageEnglish
    Title of host publicationPRICM7
    Pages1243-1246
    Number of pages4
    DOIs
    Publication statusPublished - Aug 17 2010
    Event7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7 - Cairns, QLD, Australia
    Duration: Aug 2 2010Aug 6 2010

    Publication series

    NameMaterials Science Forum
    Volume654-656
    ISSN (Print)0255-5476

    Other

    Other7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7
    Country/TerritoryAustralia
    CityCairns, QLD
    Period8/2/108/6/10

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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