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A comprehensive methodology to investigate heat flux in a ring-on-ring tribometer is presented. Thermal fluxes under high contact pressures and temperature differences were evaluated through an experimental campaign and by a numerical procedure of inverse analysis applied to surface temperature measurements. An approximation of a two-dimensional time-dependent analytical solution for the temperature...
Powder metallurgy (PM) processing of steels typically results in a material characterized by residual porosity reducing the mechanical strength of the material. That is why mechanical components produced from PM steels for high demanding applications often require a surface hardening in order to improve both the fatigue and the wear resistance. Among the surface treatments, gas nitriding assures economic...
Powder metallurgy processing of steels typically results in materials characterized by residual porosity, whose sizes and morphology, together with the microstructure, strongly affect the fatigue crack growth behaviour of the materials.Prismatic specimens were pressed at 7.0g/cm 3 density from Astaloy CrM powder and sintered under different conditions, varying the sintering temperature and...
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