Comparative hot deformation characters of Al-Mn-Mg-RE alloy and Al-Mn-Mg-RE-Ti alloy

Fulin Jiang, Hui Zhang, Xiankun Ji, Xianna Meng, Luoxing Li

    Research output: Contribution to journalArticlepeer-review

    9 Citations (Scopus)

    Abstract

    The hot deformation characters of two Al-Mn-Mg-RE alloys (without and with Ti addition, respectively) were studied by hot compression tests, and the deformed microstructures were observed by optical microscopy and transmission electron microscopy, respectively. The results show that the flow stress, hot deformation activation energy and stress exponent were higher with the addition of Ti during hot deformation. Less indistinct subgrain boundaries were also obtained with addition of Ti. The main enriched rare earth constituent particles could make positive purifying effects on impurity elements of Fe and Si in the Al-Mn-Mg-RE alloy. While the addition of Ti not only promoted the formation of a more stable Ti2 Al20 (Cex, La1-x) phase, but also resulted in more refined and dispersive constituent particles, which could improve the hot workability of the alloy.

    Original languageEnglish
    Pages (from-to)10-17
    Number of pages8
    JournalMaterials Science and Engineering A
    Volume595
    DOIs
    Publication statusPublished - Feb 10 2014

    All Science Journal Classification (ASJC) codes

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

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