Gripless nanotension test for determination of nano-scale properties

On the state of deformation in a polycrystalline material in three-dimension: Elastic strains, lattice rotations, and deformation mechanisms

“…11). As expected, most of the plastic deformation for the model S4 is accommodate by prism (1-3) and basal (3)(4)(5)(6) systems whereas for the model S4Pa, prism (1-3), basal (4-6), and pyramidal <a> (7)(8)(9)(10)(11)(12)) are all active. The results presented in this paper for model S4Pa are for the case where the ratio of the CRSS for basal and prism slip systems is the same as that of model S4, however, we have tested other ratios, yet our conclusions did not change.…”

“…Mater., 373 (2008), 217-225]. There are however other studies concluding that at room temperature in Zr alloys pyramidal <a> slip systems are not active [4,5]. Similar ambiguities exist in the literature for the related Ti alloys.…”

“…For instance, at nano and micro scales, cantilever beams or pillars can be used to characterize mechanical properties of engineering materials. These experiments are mainly conducted by milling micro-beams which will be deflected while the force-displacement curve is recorded [1][2][3][4][5][6]. The measured force-displacement curve and the orientation of the pillar can then be compared to a crystal plasticity or dislocation dynamic simulation to extract critical resolved shear stress (CRSS) values of each individual active system.…”

Review on TEM analysis of growth twins in nanocrystalline palladium thin films: Toward better understanding of twin-related mechanisms in high stacking fault energy metals

“…These properties must be controlled or adapted to the working conditions, whether it is a flexible electronic device in which the metallic lines must survive large strains, MEMS microbridges, which must sustain high stresses without permanent bending or thin coatings, which must not scratch under mechanical loading to preserve functionality. Unfortunately, most thin nc films suffer from a lack of ductility . Ductility is related to the capacity for a material to keep plastic deformation homogenous and avoid localization in the form of diffuse or sharp necks.…”