Compaction of AISI M2+10%vol. NbC Processed by High Energy Mill

Evolutions during synthesis of Al–AlN-nanostructured composite powder by mechanical alloying

“…Previously, Fogagnolo et al [39] reported the compressibility of a similar system in the range of 200-500 MPa (the latter stage of compaction). By applying the Panelli and Ambrosio Filho equation [40] they showed that the green density decreases with AlN addition.…”

Study of the densification of a nanostructured composite powder

“…For instance, Fogagnolo et al [18] reported the effect of mechanical milling on morphology of powders. They related compaction behavior of powders to the microstructural evolutions occurred during milling and applied Panelli-Ambrosio Filho equation [19].…”

Influence of Annealing on the Microstructure and Mechanical Properties of Electrodeposited Nanocrystalline Nickel

“…4). The reason is not completely clear; however, given the abundant evidence revealed from experiments [9][10][11][12][13][14][15] as well as simulations [16][17][18], it is now generally acknowledged that the change of slopes corresponds to a change in the dominate deformation mechanisms with decreasing grain size. In coarse-grained metals plastic deformation is governed by dislocation-mediated processes (nucleation, multiplication, motion and interaction etc.…”

“…The reverse Hall−Petch behaviour observed at the finest nanoscale grain sizes is complicated and still in debate. It has been revealed by simulations [17,18] that the strength of NC Cu decreases with decreasing grain size in the grain size range of 3.28 to 6.56 nm, where the NC Cu deforms via a large number of small "sliding" events of atomic planes at grain boundaries, with only a minor part being caused by dislocation activity in grains. The reason for this softening at small grain sizes is due to a large fraction of atoms at grain boundaries.…”