Residual stress relief in Al-Zn-Mg-Cu alloy by a new multistage interrupted artificial aging treatment

Yishan Sun, Fulin Jiang, Hui Zhang, Jian Su, Wuhua Yuan

    Research output: Contribution to journalArticlepeer-review

    28 Citations (Scopus)

    Abstract

    A novel multistage interrupted artificial aging treatment was designed for reducing residual stresses in quenched Al-Zn-Mg-Cu alloy thick plates. The results show that residual stress magnitudes were reduced significantly and even eliminated completely by this novel treatment while the conventional artificial aging only contributed to a reduction 10%-35%, because an inverse stress was ingeniously employed during rapid heating to release the internal residual stress. Meanwhile, the mechanical properties were maintained, and the corrosion resistance was improved comparing to conventional artificial aging. The maintained mechanical property and improved corrosion resistance were resulted from rearranging of dislocations and precipitates characters in multistage interrupted artificial aged alloys.

    Original languageEnglish
    Pages (from-to)281-287
    Number of pages7
    JournalMaterials and Design
    Volume92
    DOIs
    Publication statusPublished - Feb 15 2016

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Mechanics of Materials
    • Mechanical Engineering

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