Evolution of cold-rolled microstructures of biomedical Co-Cr-Mo alloys with and without N doping

▶ Reserach highlights ▶ The effects of nitrogen doping on microstructural evolution have been investigated. ▶ Nitrogen doping improved the cold workability of this alloy system. ▶ Initiation of edge cracks was observed for a 30% cold rolling reduction in the alloy. ▶ The primary deformation mechanism is the strain-induced martensitic transformation. ▶ The SIMT is responsible for the limited cold workability of the alloys.