Das Primärgefüge sprühkompaktierter Stähle

Spray forming is known as a production procedure recently developed for technical materials, specially for the production of high-grade steels. The advantages of disintegration of the pouring into small droplets associated with rapid cooling leads to remarkable improvements of homogeneity by forming the primary microstructure in comparison to conventionally cast material. These goals are also found in all semi-finished products after thermo-mechanical treatments. Studies of the very homogeneously formed microstructure of a ball bearing steel (100Cr6) and a high-speed steel (HS6-5-2C) show also the avoiding of pores by high consolidation and the elimination of macro-segregations.