Papers by Keyword: Inverse Pole Figure

Abstract: Single crystals of pure magnesium were fabricated in this study by employing the modified Bridgman method. To determine the exact orientation of crystals, electron back scattered diffraction (EBSD) method was employed in this study. Dimensions of single crystals were 10 mm in diameter and 120 mm in length. Single crystals with near basal, pyramidal, and near prismatic orientations were obtained, on which hardness and compression tests were conducted. It has been revealed that hardness and the strength strongly depended on the orientation. While the hardness of pyramidal orientation was highest and that of near prismatic orientation was lowest, the compressive strength along near prismatic orientation appeared to be highest and that along prismatic orientation was lowest.

Abstract: In this article presented, the maximum entropy method (MEM) assisted by the particle swarm optimization (PSO) algorithm with inertia weight factor was adopted to quantify the volume percentage of crystalline grains corresponding to the {100} fiber texture in high-purity Aluminum foils. The results derived from the inverse pole figures indicate a simpler and more convenient method than the ones derived by the conventional metallographic analysis in comparison, which possess a relative error less than 5% in general. In consideration of the measurement error relating to the metallographic method, this improved quantification is more accurate and acceptable.

Abstract: Electrodeposited Ni films were produced by using four types of electrodeposition methods, direct current without additive (DC), direct current with additive (AD), square pulse without additive (SP) and square pulse with additive (AS). The <100> texture was obtained by using the DC method at about 20 °C and by using the AD and the AS methods at about 80°C. The <110> texture was obtained by using the DC and the SP methods at about 80 °C. When using the AS method, the surface roughness of Ni deposit was lower than that of Ni deposits after using the other electrodepositon methods and the microstructure of Ni deposits showed nanocrystalline grain size. The <100> textures of Ni deposits using the DC and the AS methods remained unchanged after the recrystallization process. The <110> texture of Ni deposits using the SP method at about 80 °C changed to < 3 1 0> orientation after the recrystallization process.