Microstructure and mechanical properties of a high strength bearing steel SAE 52100 produced by spray deposition

摘要

Spray depositing allows the production of steels having a struc- ture which is free of any macro-segregation, homogeneous and equiaxed. Nevertheless the spray deposition of steels shows some effects that have to be regarded as disadvantages. A porous region at the billet border and a rather coarse-grained microstruc- ture can be noticed. As a result, in the presented work the influence of a subsequent hot rolling and a following heat treatment on mi- crostructure and mechanical properties has been investigated.