The role of pores and microstructural heterogeneity on the tooth root fatigue strength of sintered spur gears
The automotive industry employs a considerable amount of sintered parts, mainly as transmission and engine components.Gears are the parts that mostly benefit, in terms of cost saving, from the near net shape P/M technology.However, the porosity along with the heterogeneous microstructure can detrimentally affect the mechanical behaviour, especially