Characterization of Mechanical Properties and Machining Performances of New Malleable Iron Powder Grades

摘要

A new iron powder grade has been developed to reach 7.5 g/cm~3 after sintering. This grade is a malleable iron powder, MIP, in which the carbon is dispersed as graphite nodules in a ferritic matrix. This material achieves almost 100% densification through liquid phase sintering. The shape of the graphite particles can be controlled through proper admixed additions and adjustment of the sintering temperature profile. This material also shows good machining performances.This paper describes the static and dynamic properties of pearlitic MIP materials. Also, the face turning performances were compared to those achieved with DI 80-55-06 and a powder forged FC-0205 material with 0.3% MnS.