Enhancing the Structural and Mechanical Properties of Ti-Zr Alloy through Boron Doping

Year 2024, , 412 - 421, 01.03.2024

Kürşat İcin , Sefa Emre Sünbül , Raşit Sezer

https://doi.org/10.21597/jist.1301838

Abstract

This study aims to improve the structural strength of the commonly used Ti-15Zr alloy in dental applications by investigating the effects of low boron additions. Ti-15Zr alloys containing 1-4% boron have been produced by vacuum arc melting. The phase ratios in the microstructure of the produced alloys vary according to the boron content. With increasing boron content, the ratio of TiB compound in the phase structure increases. The hardness of Ti-Zr-B alloys exhibited a notable increase in correlation with rising boron content. Measured hardness values of 36.31, 39.50, 44.14, and 53.40 displayed a clear upward trend with higher boron percentages. The tensile strength of the Ti-Zr-B alloys exhibits a trend of initially increasing with boron content, reaching its highest value of 888 MPa at 1% boron. The yield strength follows a similar with tensile strengh, with an initial rise from 449 MPa at 0% boron to a peak of 562 MPa at 1% boron content. Beyond this point, the yield strength slightly decreases to 469 MPa at 2% boron but sharply drops to 186 MPa at 4% boron content. As boron content increases in the Ti-Zr-B alloys, the percentage elongation, indicating the material's plastic deformation capacity before fracture, consistently decreases from 17.03% at 0% boron to 0.70% at 4% boron content.

Keywords

Ti-15Zr, Boron Doping, Vacuum Arc, Melting, Mechanical properties

Supporting Institution

Karadeniz Technical University University Scientific Research Projects Coordination Unit

Project Number

FBA-2020-8810

Thanks

This study was supported by Karadeniz Technical University University Scientific Research Projects Coordination Unit with Project number of FBA-2020-8810.

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