... optical microscopy, scanning electron microscopy, and wavelength dispersive spectroscopy. Oxygen concentration in the consolidated sample was 13.55% less than in the as-received powders. The flexure strength, fracture toughness, Young’s modulus, and Vickers hardness of the consolidated specimens were...

...E. A. Baxevani; A. E. Giannakopoulos The present paper presents a relation between the vickers hardness HV and the loading stiffness C of instrumented vickers indentation of metal substrates. The relation is based on the fact that the nonaxisymmetry of the plastic deformation of the vickers...

... in dynamic equilibrium, leading to the growth of relatively thick nanoporous alumina films. Hardness measurements were conducted on surfaces with both open and closed pores. Vickers hardness was calculated as the applied load F over the projected contact area. The projected contact area...

...J. J. Ahn; S. Ochiai Mechanical properties of silicon carbide particle reinforced aluminum alloy 6061 composites with 5% and 10% SiCp / Al as well as aluminum alloy 6061 (AA6061) degraded by neutral 3.5% NaCl solution were examined by tensile tests and micro Vickers hardness measurement...

... is the consequence of the PLC effect as it is reproduced also by a phenomenological numerical model. Portevin-Le Chatelier effect grain boundaries dislocation drag dislocation pile-ups indentation Vickers hardness The Portevin-Le Cha^telier effect (PLC) is a kind of plastic instability which...

.... Johnson. 27 April 1999 13 February 2001 piezoceramics indentation fracture fracture toughness finite element analysis fracture mechanics crazing stress analysis electric field effects penny-shaped cracks lead compounds Vickers hardness Due to their intrinsic electro...