Effects of Solution Treatments on Microstructure and Texture of Mg-Gd-Y-Nd-Zr Alloy Extruded Plate
Abstract: Effects of solution treatments on microstructure and texture of an extruded Mg-8Gd-4Y-Nd-Zr alloy plate were investigated using optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and texture testing. The results indicated that the grain growth occurred as the solution temperature increased and the solution time prolonged. The dynamic precipitates formed during extrusion dissolved into the matrix simultaneously as the solution processed. The grain growth rate was very low when the solution temperature was lower than 500˚C, while the grain growth rate increased rapidly when the sample solution treated at the temperature higher than 500˚C. The increase in grain growth rate was ascribed to the dissolution of dynamic precipitates, whose inhibiting effect on grain boundary migration decreased. The basal texture weakened while the prismatic texture strengthened as the solution processed. The strengthening in prismatic texture was attributed to the preferential growth of the prismatic texture component.
文章引用: 唐昌平 , 成声亮 , 李国栋 (2016) 固溶处理对Mg-Gd-Y-Nd-Zr合金挤压板材组织与织构的影响。 材料科学， 6， 277-284. doi: 10.12677/MS.2016.65036
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