Experimental and theoretical studies of the hot tearing behavior of Al-xZn-2Mg-2Cu alloys

Y. Li, X. Gao, Z. R. Zhang, W. L. Xiao, H. X. Li*, Q. du, L. Katgerman, J. S. Zhang, L. Z. Zhuang

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    12 Citations (Scopus)


    The effect of Zn addition on the hot tearing susceptibilities of non-refined Al-xZn-2Mg-2Cu (x = 2-12 wt pct) alloys was investigated via direct crack observations and load response measurements. The obtained experimental results were compared with the predictions made using a modified Rappaz–Drezet–Gremaud (RDG) hot tearing model. Both the minimum crack width and load at the non-equilibrium solidus (NES) temperature (which served as a good indicator of hot tearing response) were observed at a Zn concentration of approximately 4 wt pct, and the formation of cracks was highly correlated with the predictions made via the modified RDG hot tearing model (although the obtained relationship critically depended on the magnitude of fraction solid at which solid coalescence was expected to occur). Furthermore, it was confirmed from the load development pattern that the addition of Zn into the matrix of Al-xZn-2Mg-2Cu alloys promoted the formation of coalesced networks, which decreased their corresponding coalescence fraction solids.

    Original languageEnglish
    Pages (from-to)4744-4754
    JournalMetallurgical and Materials Transactions A - Physical Metallurgy and Materials Science
    Issue number10
    Publication statusPublished - 2017


    Dive into the research topics of 'Experimental and theoretical studies of the hot tearing behavior of Al-xZn-2Mg-2Cu alloys'. Together they form a unique fingerprint.

    Cite this