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Interaction of Precipitation and Creep in Mg-Al Alloys

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Abstract

Microstructural studies of a Mg-10.3 pet Al alloy showed that discontinuous precipitation during aging multiplies the grain boundary area available for easy deformation in elevated temperature creep. An increase of strain rate for a 6.2 pet Al alloy at 400°F, where precipitation and creep are concurrent, caused an increase in the volume percentage discontinuously precipitated at the completion of the process. The relatively poor elevated temperature creep resistance of heat treated alloys of the Mg-AI-Zn type was explained in these structural terms.

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References

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Authors and Affiliations

  1. Metallurgical Laboratories, Dow Chemical Co., Midland, Mich., USA

    C. S. Roberts (Junior Member AIME)

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  1. C. S. Roberts
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Additional information

Discussion of this paper, TP 4110E, may be sent, 2 copies, to AIME by Apr. 1, 1956. Manuscript, Nov. 29, 1954. Philadelphia Meeting, October 1955.

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Roberts, C.S. Interaction of Precipitation and Creep in Mg-Al Alloys. JOM 8, 146–148 (1956). https://doi.org/10.1007/BF03377660

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  • DOI: https://doi.org/10.1007/BF03377660

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