Structural Evolution during Milling, Annealing, and Rapid Consolidation of Nanocrystalline Fe–10Cr–3Al Powder
Copyright policy )Structural Evolution during Milling, Annealing, and Rapid Consolidation of Nanocrystalline Fe–10Cr–3Al Powder
Structural changes during the deformation-induced synthesis of nanocrystalline Fe–10Cr–3Al alloy powder via high-energy ball milling followed by annealing and rapid consolidation by spark plasma sintering were investigated. Reduction in crystallite size was observed during the synthesis, which was associated with the lattice expansion and rise in dislocation density, reflecting the generation of the excess grain boundary interfacial energy and the excess free volume. Subsequent annealing led to the exponential growth of the crystallites with a concomitant drop in the dislocation density. The rapid consolidation of the as-synthesized nanocrystalline alloy powder by the spark plasma sintering, on the other hand, showed only a limited grain growth due to the reduction of processing time for the consolidation by about 95% when compared to annealing at the same temperature.
Technology, Thermodynamic Properties, Pure Iron, Article, Grain-Growth, High-Energy Ball Milling, X-Ray Diffraction, Nanocrystalline Materials, Oxidation, Microstructure Evolution, high-energy ball milling, grain growth, Al-Alloys, Mechanical Attrition, Crystallite Size, Lattice-Parameter Variation, high-energy ball milling; nanocrystalline materials; X-ray diffraction; crystallite size; grain growth; activation energy; modified Williamson-Hall method, crystallite size, Microscopy, QC120-168.85, T, QH201-278.5, Grain Growth, Activation Energy, Engineering (General). Civil engineering (General), Fe, X-ray diffraction, TK1-9971, activation energy, Descriptive and experimental mechanics, 669, Modified Williamson-Hall Method, nanocrystalline materials, Electrical engineering. Electronics. Nuclear engineering, modified Williamson-Hall method, TA1-2040
Technology, Thermodynamic Properties, Pure Iron, Article, Grain-Growth, High-Energy Ball Milling, X-Ray Diffraction, Nanocrystalline Materials, Oxidation, Microstructure Evolution, high-energy ball milling, grain growth, Al-Alloys, Mechanical Attrition, Crystallite Size, Lattice-Parameter Variation, high-energy ball milling; nanocrystalline materials; X-ray diffraction; crystallite size; grain growth; activation energy; modified Williamson-Hall method, crystallite size, Microscopy, QC120-168.85, T, QH201-278.5, Grain Growth, Activation Energy, Engineering (General). Civil engineering (General), Fe, X-ray diffraction, TK1-9971, activation energy, Descriptive and experimental mechanics, 669, Modified Williamson-Hall Method, nanocrystalline materials, Electrical engineering. Electronics. Nuclear engineering, modified Williamson-Hall method, TA1-2040
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