Mechanical properties of the binary titanium‐zirconium alloys and their potential for biomedical materials

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Abstract
Mechanical properties of titanium‐zirconium binary alloys were investigated in order to reveal their possible use for new biomedical materials and to collect useful data for alloy design through a hardness test, a tensile test, and optical microscopy. The hardness of the alloy containing 50% zirconium was approximately 2.5 times as large as the hardness of pure titanium and pure zirconium. Tensile tests showed a similar tendency. No changes between hardness of as cast specimens and as homogenized specimens were observed, nor were changes in microstructures noted. Comparisons between the Ti‐6Al‐4V alloy and the Ti‐Zr‐6Al‐4V alloy indicated that a titanium‐zirconium alloy could provide a base material for a new biomedical alloy. From these results, it was concluded that new alloys for biomedical materials should be designed as titanium‐zirconium base alloys. © 1995 John Wiley & Sons, Inc.