The low Young's modulus of Ti-alloys is of particular importance for biomedical applications to prevent or reduce the occurrence of stress shielding. This paper shows some ways that are used to produce new Ti-alloys with low Young's modulus for biomedical applications. The different factors that affect the Young's modulus such as the phase's stability, role of alloying elements, plastic deformation, and texturing are discussed. The low-cost and low-Young's modulus Ti-alloys (i.e., alloys composed mainly of the common elements and/or contains a minimum amount of the high-cost rare elements) are also discussed.
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