Abstract
This paper reviews severe plastic deformation (SPD) techniques for producing ultrafine-grained (UFG) and nanostructured commercial pure titanium (CP-Ti) for biomedical applications as the best alternative to titanium alloys. SPD processes, effective parameters, and advantages of nanostructured CP-Ti over coarse-grained (CG) material and Ti alloys are briefly reviewed. It is reported that nanostructured CP-Ti processed via SPD exhibits higher mechanical strength comparable to Ti alloys but better biological response and superior biocompatibility. Also, different surface modification techniques offer different results on UFG and CG CP-Ti, leading to nanoscale surface topography in UFG samples. Overall, it is reported that nanostructured CP-Ti processed by SPD could be considered to be the best candidate for biomedical implants.
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