X-Ray Diffraction Analysis on Crystallite Development of Nanostructured Aluminium

Elisabeth Meijer; Nicholas Armstrong; Wing Yiu Yeung

doi:10.4028/www.scientific.net/SSP.118.53

Paper Titles

Effect of Annealing Temperature on Mechanical Properties of Cold Drawn Pearlitic Steel Wires
p.31

Heat Treatment Behavior of Tungsten Heavy Alloy
p.35

Aging Precipitation Behavior of Cu-Ag-Cr Alloy
p.41

Influence of Thermo-Mechanical Heat Treatment on the Thermoelectric Properties of Ag Added Bi₁Sb₃Te₆ Compounds
p.47

X-Ray Diffraction Analysis on Crystallite Development of Nanostructured Aluminium
p.53

Microstructural Change and Martensitic Transformation in a Rapidly Solidified Cu-Al-Ni Based SMA Ribbons with Heat Treatment
p.59

Change of Microstructures of Directionally Solidified Ni Base Superalloy GTD-111 at High Temperature
p.65

Effects of Modified Solution Heat Treatment on δ- Phase and Low Cycle Fatigue Properties of Inconel 718 Alloy
p.71

Effect of Annealing Conditions on the Microstructure and Corrosion Characteristics of Zr-xNb Alloys
p.77

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X-Ray Diffraction Analysis on Crystallite Development of Nanostructured Aluminium

Abstract:

This study is to investigate the crystallite development in nanostructured aluminium using x-ray line broadening analysis. Nanostructured aluminium was produced by equal channel angular extrusion at room temperature to a total deformation strain of ~17. Samples of the extruded metal were then heat treated at temperatures up to 300oC. High order diffraction peaks were obtained using Mo radiation and the integral breadth was determined. It was found that as the annealing temperature increased, the integral breadth of the peak reflections decreased. By establishing the modified Williamson-Hall plots (integral breadth vs contract factor) after instrumental correction, it was determined that the crystallite size of the metal was maintained ~80 nm at 100oC. As the annealing temperature increased to 200oC, the crystallite size increased to ~118 nm. With increasing annealing temperature, the hardness of the metal decreased from ~60 HV to ~45 HV.