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Microstructure regulation of titanium-oxygen alloy with high strength and excellent ductility for biomedical applications
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DOI：10.1016/j.intermet.2022.107648.png)
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Abstract
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Oxygen solid solution reinforced Ti-O alloys with high strengths and good ductility were designed and synthesized via mechanical milling and spark plasma sintering (SPS) processes. The grain size and dispersion state of the Ti-O alloys were optimized by regulating the milling time of the composite powders. Outstanding properties were achieved by 4 h milling with a yield strength of 1082 MPa, 100% higher than that of commercially pure titanium (CP-Ti). According to the quantified results of the strengthening mechanism, fine grains are responsible for the balance of superior strength and ductility of the Ti-O alloy.
Keywords:
Ti -O alloy
Yield strength
Ductility
Solid solution strengthening
Grain refinement
Biocompatibility
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