The microstructure, tensile properties, and creep behavior of Mg-Zn alloys containing 0-4.4 wt.% Zn

C. J. Boehlert, K. Knittel

    Research output: Contribution to journalArticle

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    Abstract

    This paper describes the microstructure, tensile, and tensile-creep behavior of a series of Mg-Zn alloys ranging from 0 to 4.4 wt.% Zn. The microstructures consisted of equiaxed hexagonal-close-packed grains with fine precipitates preferentially located at grain boundaries. Some of the microstructures contained fine laths within the equiaxed grains. The finest grain sizes were observed for a Zn composition of 4 wt.%. Tensile experiments were performed at room temperature and 150 °C while creep experiments were conducted at 150 °C for applied stresses between 30 and 50 MPa. The greatest tensile and creep resistance was exhibited by Mg-4.1Zn which contained 0.2 wt.% Y. The measured creep exponent for the Mg-4.1Zn alloy was 4.2, suggesting dislocation climb as the dominant creep mechanism. Overall, Zn proved to be a potent grain refiner and strengthener for Mg where 4 wt.% appeared to be the optimal Zn content for tensile and creep strengthening over the range of alloying additions examined.

    Original languageEnglish (US)
    Pages (from-to)315-321
    Number of pages7
    JournalMaterials Science and Engineering A
    Volume417
    Issue number1-2
    DOIs
    StatePublished - Feb 15 2006

    Profile

    microstructure
    Creep
    Microstructure
    tensile creep
    Common Bile Duct Diseases
    Experiments
    creep strength
    tensile properties
    alloying
    precipitates
    grain boundaries
    grain size
    exponents
    room temperature
    Acetanilides
    African horse sickness virus
    Aortitis
    Addison Disease
    Temporal Lobe Epilepsy
    Epinephrine

    Keywords

    • Creep
    • Lightweight alloys
    • Magnesium
    • Microstructure
    • Tension

    ASJC Scopus subject areas

    • Materials Science(all)

    Cite this

    The microstructure, tensile properties, and creep behavior of Mg-Zn alloys containing 0-4.4 wt.% Zn. / Boehlert, C. J.; Knittel, K.

    In: Materials Science and Engineering A, Vol. 417, No. 1-2, 15.02.2006, p. 315-321.

    Research output: Contribution to journalArticle

    Boehlert, C. J.; Knittel, K. / The microstructure, tensile properties, and creep behavior of Mg-Zn alloys containing 0-4.4 wt.% Zn.

    In: Materials Science and Engineering A, Vol. 417, No. 1-2, 15.02.2006, p. 315-321.

    Research output: Contribution to journalArticle

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    abstract = "This paper describes the microstructure, tensile, and tensile-creep behavior of a series of Mg-Zn alloys ranging from 0 to 4.4 wt.% Zn. The microstructures consisted of equiaxed hexagonal-close-packed grains with fine precipitates preferentially located at grain boundaries. Some of the microstructures contained fine laths within the equiaxed grains. The finest grain sizes were observed for a Zn composition of 4 wt.%. Tensile experiments were performed at room temperature and 150 °C while creep experiments were conducted at 150 °C for applied stresses between 30 and 50 MPa. The greatest tensile and creep resistance was exhibited by Mg-4.1Zn which contained 0.2 wt.% Y. The measured creep exponent for the Mg-4.1Zn alloy was 4.2, suggesting dislocation climb as the dominant creep mechanism. Overall, Zn proved to be a potent grain refiner and strengthener for Mg where 4 wt.% appeared to be the optimal Zn content for tensile and creep strengthening over the range of alloying additions examined.",
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