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Sub-eutectoid aged Mg-PSZ alloy with enhanced thermal up-shock resistance

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Abstract

Mg-PSZ samples prepared in the as-fired condition were strong (550 to 600 MPa) but had poor thermal up-shock resistance in that they shattered during a standard test. However, ageing at 1100‡ C enabled 70% of their original strength to be retained after thermal up-shock damage. This marked improvement in thermal shock resistance was attributed to the conversion of tetragonal precipitates to the monoclinic state by a process other than particle growth. It is proposed that the precipitate/matrix interface which governs the crystal structure of a precipitate at room temperature was altered by a type of solid state reaction, not previously reported, which occurs during ageing at 1100‡ C.

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Authors and Affiliations

  1. CSIRO Division of Materials Science, Advanced Materials Laboratory, PO Box 4331, 3001, Melbourne, Victoria, Australia

    R. H. J. Hannink & R. C. Garvie

Authors
  1. R. H. J. Hannink
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  2. R. C. Garvie
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Hannink, R.H.J., Garvie, R.C. Sub-eutectoid aged Mg-PSZ alloy with enhanced thermal up-shock resistance. J Mater Sci 17, 2637–2643 (1982). https://doi.org/10.1007/BF00543898

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  • DOI: https://doi.org/10.1007/BF00543898

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