On interface strengthening ability in metallic multilayers

Suppression of Premature Fracture of Silicon under Three‐Point Bending: Role of Nanoscale Localized Deformation of Metallic Multilayered Coating

“…Both of these values are very close to one third of the nanoindentation hardness (1.7 GPa) of the multilayer. [12] This result confirms that the fracture strength of the multilayer/substrate system basically depends on the strong and tough multilayer, even though the brittle substrate has quite low fracture strength.…”

Size effect on mechanical behavior of Al/Si3N4 multilayers by nanoindentation

“…For the semi-coherent interface, the situation becomes more complicated because of the dislocation system discontinuity. The lattice mismatch model reported by Li et al [71] has shown higher Hall-Petch constant in the metal/metal multilayers with larger lattice mismatch. Usually the Hall-Petch constant of fcc-metal/fcc-metal multilayers (Cu/Au, Cu/Ag) [66] is lower than that of fcc-metal/bcc-metal multilayers (Cu/Cr, Cu/Nb) [27], as shown in Fig.…”

Strengthening mechanism of super-hard nanoscale Cu/Al multilayers with negative enthalpy of mixing

“…This was a surprising result since the hardness of fcc/fcc system normally could only reach about 6.5 GPa as shown in Fig. 3(b), such as Cu/Ni, 26 Cu/Au, 27 Cu/Ag, 28 Ag/Ni, 29 Au/Ni, 30 Ag/Al, 31 Cu/Co, 16 and Ag/Co. 32 The latter two cases had the specialty in showing a metastable fcc Co phase, when the Co layer was thin enough.…”