Creep behavior of Mg-11Y-5Gd-2Zn-0.5Zr (wt.%) at 573K

D. D. Yin, Q. D. Wang, C. J. Boehlert, V. Janik, Y. Gao, W. J. Ding

    Research output: Contribution to journalArticle

    • 17 Citations

    Abstract

    The effect of microstructure on the tensile-creep behavior of Mg-11Y-5Gd-2Zn-0.5Zr (wt.%) (WGZ1152) at 573K (0.64T m) and stresses between 30MPa and 140MPa was investigated. The minimum creep rate of the peak-aged (T6) alloy was almost two orders of magnitude lower than that for a WE54-T6 (Mg-5.2Y-3.6RE-0.5Zr (wt.%)) alloy. The peak-aged condition (T6) exhibited slightly greater creep resistance than the as-cast condition. The solution treated (T4) material exhibited the lowest creep resistance. The creep stress exponent (∼5) suggested that dislocation creep was the dominant secondary creep mechanism. The minimum creep rate and time-to-fracture could be described by the Monkman-Grant equation. An in-situ creep experiment indicated that intergranular cracking was prevalent in the tertiary creep regime and the crack propagation path tended to follow the grain boundaries.

    Original languageEnglish (US)
    Pages (from-to)239-247
    Number of pages9
    JournalMaterials Science and Engineering A
    Volume546
    DOIs
    StatePublished - Jun 1 2012

    Profile

    creep strength
    Creep
    tensile creep
    crack propagation
    casts
    grain boundaries
    exponents
    microstructure
    Addison Disease
    Temporal Lobe Epilepsy
    Creep resistance
    Common Bile Duct Diseases
    Traffic Accidents
    Cimetidine
    Crack propagation
    Grain boundaries
    Microstructure
    Experiments

    Keywords

    • Creep
    • In-situ
    • Intergranular cracking
    • Long period stacking ordered (LPSO)
    • Mg-RE alloy

    ASJC Scopus subject areas

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

    Cite this

    Yin, D. D., Wang, Q. D., Boehlert, C. J., Janik, V., Gao, Y., & Ding, W. J. (2012). Creep behavior of Mg-11Y-5Gd-2Zn-0.5Zr (wt.%) at 573K. Materials Science and Engineering A, 546, 239-247. DOI: 10.1016/j.msea.2012.03.060

    Creep behavior of Mg-11Y-5Gd-2Zn-0.5Zr (wt.%) at 573K. / Yin, D. D.; Wang, Q. D.; Boehlert, C. J.; Janik, V.; Gao, Y.; Ding, W. J.

    In: Materials Science and Engineering A, Vol. 546, 01.06.2012, p. 239-247.

    Research output: Contribution to journalArticle

    Yin DD, Wang QD, Boehlert CJ, Janik V, Gao Y, Ding WJ. Creep behavior of Mg-11Y-5Gd-2Zn-0.5Zr (wt.%) at 573K. Materials Science and Engineering A. 2012 Jun 1;546:239-247. Available from, DOI: 10.1016/j.msea.2012.03.060

    Yin, D. D.; Wang, Q. D.; Boehlert, C. J.; Janik, V.; Gao, Y.; Ding, W. J. / Creep behavior of Mg-11Y-5Gd-2Zn-0.5Zr (wt.%) at 573K.

    In: Materials Science and Engineering A, Vol. 546, 01.06.2012, p. 239-247.

    Research output: Contribution to journalArticle

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