2021年8月1日 · In this work, we reported two hitherto unreported dislocation walls in a cold compressed Fe 42 Mn 38 Co 10 Cr 10 HEA. Both walls are located at the interfaces between parallel and juxtaposed martensite lamellae having different stacking sequences.

1983年9月1日 · Recent experimental work has shown, however, that long-range internal stresses prevail also in crystals containing dislocation wall or cell structures which have so far been considered as energetically favourable dislocation patterns of negligible internal stress.

1993年7月1日 · INTRODUCTION Since Frank [1] proposed a dislocation wall model for the description of a low angle grain boundary, dislocation walls have been widely observed in many physical situations: low and large angle boundaries, epitaxial growth, walls in …

2019年10月23日 · The in-situ observation during the deformation demonstrates that the plastic deformation is accommodated by the pronounced planar dislocation gliding followed by the formation of slip bands (SBs)...

2025年2月21日 · Acetabulum fractures are pelvis fractures that involve the articular surface of the hip joint and may involve one or two columns, one or two walls, or the roof within the pelvis. Diagnosis can be made radiographically with dedicated pelvis radiographs (including Judet views) but frequently require CT pelvis for surgical planning.

2012年1月1日 · The two grains share a common axis about which both are rotated, defining the angle θ. By joining these two crystals to a bi-crystal, a dislocation wall is formed by an array of dislocations and each dislocation has the same sign and Burgers vector.

1997年12月31日 · In order to investigate the ability to characterize such spacing distributions for near-planar boundaries a model has been developed allowing the construction of a series of dislocation walls that can be sectioned in any plane allowing spacing distributions of the …

2008年4月18日 · The deformation response and texture evolution of aluminum alloyed Hadfield steel polycrystals is explored in the presence of high-density dislocation walls.

2020年10月1日 · Dislocation dynamics simulation is used to investigate the true stress field of GND facets. The geometry, dimension and dislocation density of three generic types of GND facets (twist, tilt and epitaxial facets) are systematically studied.

2020年1月10日 · In this paper, we develop further the deterministic ap-proach proposed by Groma et al. [25] that is able to display the spontaneous formation of dislocation walls through a dynamical transition [14], and can be used to establish basic constitutive rules for continuum dis-location plasticity theories. The key ingredients are: a.