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Molybdenum Alloy Dispersion Enhanced Mechanisms

What is molybdenum alloy dispersion strengthening mechanisms?

In the multi-molybdenum alloy, the added titanium, zirconium, hafnium and other active elements of the reaction of the carbon-molybdenum carbide refractory grain boundary precipitates, forming a semi-coherent low energy grain boundaries, the grain boundaries to improve the binding force ; at high temperatures in the presence of fine dispersed phase, play a dispersion strengthened role in enhancing the strength of molybdenum and molybdenum alloys and improved ductility of molybdenum and molybdenum alloys.

molybdenum alloy products

Studies suggest that fine particle rare earth oxide dispersion strengthened reinforced stronger than carbide. Doped molybdenum dispersion strengthening mechanism of solid particles together with the parent metal deformation, grain boundary diffusion particles effectively impede movement axially recrystallized grain boundary migration of drag is much smaller than the radial direction along the wire, the grain boundaries in the axial direction rapid migration, slow migration in the radial direction, eventually forming a large aspect ratio of the lap tissue to improve the toughness of the material after recrystallization, and the recrystallization temperature is increased significantly.

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