Grain Refining Technique and Mechanical Properties of the Biomedical Co-Cr-Mo Alloy

Shingo Kurosu; Yun Ping Li; Hiroaki Matsumoto; Akihiko Chiba

doi:10.4028/www.scientific.net/MSF.654-656.2184

Paper Titles

MAO-Prepared Hydroxyapatite Coating on Ultrafine-Grained Titanium
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Pack Cementation Treatment of Titanium Using Tetracalcium Phosphate Powder for Biomedical Applications
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Phase and Morphology of Carbides in ASTM F75 Co-Cr-Mo-C Alloys Formed at 1473 to 1623 K
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Heat Treatment of ASTM F75 Co-Cr-Mo-C-Si-Mn Alloys
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Grain Refining Technique and Mechanical Properties of the Biomedical Co-Cr-Mo Alloy
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Effect of Temperature and Strain Rate on Microstructure of Dynamically Recrystallized Ni₄₅Co₅ Mn_36.7In_13.3 Alloy
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Biodegradable Mg-Ca and Mg-Ca-Y Alloys for Regenerative Medicine
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Calcium Phosphate Deposition on Magnesium Alloy for Bioimplant Applications
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Effect of Cu Content on Unique Hardening Behavior of Dental Ag-Pd-Au-Cu System Alloy Subjected to Solution Treatment
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HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Grain Refining Technique and Mechanical Properties...

Grain Refining Technique and Mechanical Properties of the Biomedical Co-Cr-Mo Alloy

Abstract:

Thermomechanical processes combined with reverse transformation from -hcp and M2N) dual-phase to -fcc phase of biomedical Co-Cr-Mo-N alloys were examined. According to XRD analysis, the reverse transformation from  to  is completed after heat treating at 1223 to 1373 K without deformation, while after heat treating at 1223 and 1273 K contained residual M2N particles in the  matrix. After the subsequent hot compression at condition at 1273 K and strain rate less than 1 s-1, and 1223 K and strain rate less than 10 s-1, ultra fine grains less than 1 m with residual M2N were obtained. Therefore, it is suggested that the residual M2N suppressed further growing of DRXed grain. The obtained microstructure with ultra fine grain dispersed with residual M2N was obtained to demonstrate both grain refining strengthening and precipitation strengthening.