Polycrystal orientation maps from TEM

Texture and Microtexture of Pure (6N) and Commercially Pure Aluminum after Deformation by Extrusion with Forward-Backward Rotating Die (Kobo)

“…In presented investigation additional information from TEM was used. OM in TEM are not so commonly used, there exist only few systems [11][12][13][14][15][16][17], most of them not commercially available. In this research OM in TEM was performed on TECNAI G20 in OML Skawina.…”

Microstructure – Properties Relationships in Carbide-free Bainitic Steels

“…Transmission electron microscopy should be more suitable to characterize nanoscale films of retained austenite. 25,26) For AT = Ms-50°C, the matrix was mainly constituted of self-tempered martensite (~ 65%). The bainitic transformation led to approximately 20% of bainitic ferrite until the stasis is reached, which ensured that the carbon enrichment of the austenite would be sufficient to stabilize it at room temperature.…”

Electron Diffraction Re-Explained (The Intense Magnetic Fields Interactions within Crystals)

“…The crystal is a homogeneous solid that possess long-range, three dimensions internal order, and the unit cell is the smallest unit of the structure (or lattice) that can be indefinitely repeated to generate the whole structure (lattice) [30], and a single crystal is composed of unit cells of the Bravais lattices, represents a structural unit or building block that can describe the crystal structure [21], [31], the structure repeats itself periodically in each of the three dimensions [8], thou the white diagonal strips of lights seen to connect the bright spots within the structure shown in Fig.2-A [27], is similar to the enlarged Kikuchi lines shown in Fig.2-C [30], and thought to be formed in diffraction patterns by diffusely scattered electrons [32], the Kikuchi Lines appear in pairs, being parallel to one another, the black lines (refers to difference of intensity), often passes through a spots, and is then perpendicular to the line joining the spot to the origin [8], it moves during tilt as if they are affixed to the bottom of the crystal [30], the Kikuchi patterns have been used to determine the orientation [33], as they are fixed within the crystal [34] so far the part played by electron forward-focusing effect in Kikuchi band formation remained undisclosed [35], although Kikuch interpreted these lines as the amount of diffuse scattering of the entering beam, reflected from various sets of planes with which they make the Bragg angle, but it doesn't account for the production of the diffuse scattering which is a loophole in this theory [8]; however the Kikuchi lines which are presented in form of stereographically projection of two dimensional scattered electron intensity map in polar and azimuthally takeoff angles [35], is perceived as if representing what a fisheye lenses camera can shoot while inside such crystals, and since the intersection of Kikuchi lines near a spot, caused partial suppression to the spot, suggesting an interference between the rays forming the spots and those forming the line [8], thus giving evidence for a links between the spots and Kikuchi lines, hence the spots are interpreted as Nucleus Spinning Magnetic Field (NSMF) [36] and Kikuchi lines as Spinning Magnetic Lines of Forces (SMLF), similar to sunspots magnetic lines of force seen in extreme ultraviolet wavelength [37], therefore both NSMF and SMLF are suggested to form a mechanism bonding atoms to form crystals cells, in which the Kikuchi bands mark orientation space with well-defined intersections [32], known also as Kikuchi poles [38], or zones as well as paths con...…”