Details

Autor(en) / Beteiligte

• Zhang, J.Y.
• Liu, Y.
• Chen, J.
• Chen, Y.
• Liu, G.
• Zhang, X.
• Sun, J.

Titel

Mechanical properties of crystalline Cu/Zr and crystal–amorphous Cu/Cu–Zr multilayers

Ist Teil von

• Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2012-08, Vol.552, p.392-398

Ort / Verlag

Kidlington: Elsevier B.V

Erscheinungsjahr

2012

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• ► The C/C and C/A multilayers show the almost identical hardness at large h 5nm. ► The C/A multilayers exhibit saturation hardness at small h<5nm. ► The C/C multilayers soften at small h<5nm. ► ACIs have a lower sliding resistance than that of CCIs. We compare the indentation hardness of crystal/crystal (C/C) Cu/Zr multilayers and the crystal/amorphous (C/A) Cu/Cu–Zr multilayers with equal individual layer thicknesses spanning from 1 to 200nm. Both systems show similar layer thickness dependent evolution of hardness. At smaller layer thickness the C/C multilayers show softening, while no softening is observed in the C/A multilayers. The layer thickness dependent hardness is quantitatively estimated by using dislocation models. The significance of crystalline (Zr) layer and amorphous (Cu–Zr) layer on plastic deformation mechanisms is discussed.