Effects of cooling rate control during the solidification process on the microstructure and mechanical properties of cast Co-Cr-Mo alloy used for surgical implants

Structure–property relationships in a CoCrMo alloy at micro and nano-scales

“…However the effect of casting process variables on alloy hardness has been reported in several articles [34][35]. An as-cast CoCrMo alloy obtained using a metallic mould with water cooling was reported to have hardness 10% higher than the same alloy obtained using a sand mould with air cooling, which was attributed to the refinement of the microstructure due to the fast cooling rate of the former [34]. Heat treatment, e.g.…”

Effect of Carbon Addition on Microstructure and Mechanical Properties of a Wrought Co–Cr–Mo Implant Alloy

“…These defects bring about a poor ductility and lower fatigue strength, giving rise to doubt about the use for surgical implant applications. 4,5) On the other hand, wrought Co-CrMo alloys, fabricated by hot-forging process which have homogeneous structure and smaller grain size than cast CoCr-Mo alloys, will promise excellent mechanical properties. In forged condition, the tensile properties of wrought Co-CrMo alloy were greater than those of cast Co-Cr-Mo alloys.…”

Effect of Heat Treatment on Microstructure and Mechanical Properties of Ni- and C-Free Co–Cr–Mo Alloys for Medical Applications

“…1) However, in the as-cast condition, cast defects such as microporosity and cored matrix structure significantly decrease the alloy ductility. Several solutions to this problem have been proposed to improve the ductility and strength of this alloy.…”