... dislocation characterization is applied to a well-annealed nickel specimen and the results including visualizations of mesoscale structures are presented. annealing dislocation density dislocation structure nickel plasticity dislocations dipoles EBSD OIM plasticity mesoscale In 1934...

... in the subsequent cyclic loading. Under asymmetric cyclic loading with a mean stress, the cyclic plastic deformation was accompanied by noticeable inhomogeneous ratcheting deformation. TEM was used to analyze the distribution and evolution of the dislocation structures at different locations of the specimen...

... developments and also developments in microstructure, but a comprehensive understanding remains incomplete 14 17 . carbon steel forming processes softening texture work hardening plastic deformation X-ray diffraction rolling simulation dislocation structure 12 August 2002 27...

... array with a single Burgers vector, showing a sharp contrast change in the TEM picture on the top, indicating a large rotation although no misorientation measurements were conducted for this cell boundary. A close examination of the dislocation structure for the cell boundaries labeled AB, BC...

...Mohammed Cherkaoui, Professor; La´szlo´ S. To´th, Professor micromechanics plasticity dislocation motion twinning internal stresses inclusions elastoplasticity viscoplasticity grain size martensitic transformations dislocation structure crystal microstructure grain boundaries...

.... , and Kova´cs , I. , 1986 , “ Dislocation structure and work hardening in polycrystalline OFHC copper rods deformed by torsion and extension ,” Acta Metall. , 34 , pp. 1257 – 1267 . Unga´r , T. , Groma , I. , and Wilkens , M. , 1989 , “ Asymmetric X-ray line broadening of plastically...

... by the Materials Division February 20, 2001; revised manuscript received May 21, 2001. Guest Editors: Mohammed Cherkaoui and La´slo´ S. To´th. 20 February 2001 21 May 2001 dislocation structure plastic deformation X-ray diffraction crystallites Fourier transforms edge dislocations...

... in a simple extended Taylor scheme of polycrystal plasticity to achieve a retardation of texture development that is consistent with experimental results. 10 October 2000 10 May 2001 copper X-ray diffraction dislocation structure compressibility shear deformation torsion plastic...

... fracture mechanics alloys continuum mechanics voids (solid) grain growth dislocation structure The requirement for high temperature power plant to operate efficiently and safely for very long periods (up to 30 to 40 years), often in conditions of variable loading, places extreme demands...

... dislocation structure dislocation interactions 22 July 1999 18 December 1999 Contributed by the Materials Division for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY . Manuscript received by the Materials Division July 22, 1999; revised manuscript received December 18...

...Xiao Lin Macroscopic response and microscopic dislocation structures of Zr-4 subjected to biaxial fatigue under different phase angles of 30°, 60°, 90° and different equivalent strain ranges of 0.8%, 0.6%, 0.4% were studied. The testing results show that the delay angle between the stress deviators...