Multislip tests on copper crystals: A junctions hardening effect

摘要: Abstract Tensile tests along symmetrical axes are performed on Copper single crystals with a special regard to the slip systems combinations preferably activated in small strain range. From combined micrographic observations and Kossel local lattice rotation measurements, these initially active identified as those whose pairs interactions do not lead junctions formation, what reveals importance of hardening effect junctions. A previous law derived from latent tests, dislocations densities coefficients main parameters, remain valid for multislip situations even at if created included it. The whole results, supported by theoretical approach situations, underline strong dependance between anisotropy (which can no more be thought fixed once all), that distribution either or easy glide systems) applied stress state through shear stresses systems.