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<p>Magnesium alloys -- Testing<br />Hardness -- Testing<br />Metals -- Hardness<br />Magnesium alloys -- Microstructure</p>
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An Age Hardening Study Of Magnesium-Thorium-Manganese Alloys, Kuldip Singh Chopra
An Age Hardening Study Of Magnesium-Thorium-Manganese Alloys, Kuldip Singh Chopra
Doctoral Dissertations
"The age hardening processes in Mg-3.5 wt.% Th-1.0 wt.% Mn and Mg-1.0 wt.% Th-1.0 wt.% Mn alloys have been studied by light and electron microscopy, and by electron and X-ray diffraction. At aging temperatures of 300ºC and below, G.P. zone formation rapidly hardens these alloys followed by the precipitation of disc shaped plates during averaging. During aging above 300ºC, no G.P. zones form and the disc shaped precipitate grows to very large sizes. The combined results of X-ray and electron diffraction indicate that the disc shaped precipitate has a Mg₃Cd (DO₁₉) type structure. The basal plane of the Mg₃Th discs …