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<p>In the present study, (Ti, Nb)B reinforced Ti-Nb-Zr-Mn alloys were successfully fabricated through ball milling and spark plasma sintering (SPS) process with the addition of TiB<sub>2</sub>. The microstructure, mechanical behavior, and corrosion resistance in simulated body fluid of the as-prepared alloys were systematically investigated. It was found that (Ti, Nb)B phases were in situ formed through reaction between the Ti-Nb-Zr-Mn matrix and TiB<sub>2</sub> particles, which significantly enhanced the mechanical strength of the alloys. As the TiB<sub>2</sub> with equivalent B mass fractions increased from 0 to 1 wt.%, the ultimate tensile strength of the alloys improved significantly from 945 ± 13&#xa0;MPa to 1259 ± 8&#xa0;MPa, while the elongation reduced sharply from 20.2 ± 2.2% to 1.9 ± 0.5%. Microhardness tests showed that the materials’ hardness increased as the fraction of the (Ti, Nb)B phase increased. Notably, the elastic modulus increased from 77.1 ± 0.5&#xa0;GPa to 93.7 ± 0.7&#xa0;GPa. Moreover, the appropriate introduction of B was beneficial to the corrosion resistance of the alloy in simulated body fluids.</p>

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Effect of B addition on the microstructure, mechanical properties, and corrosion behavior of Ti-24Nb-4Zr-2Mn alloys

  • 期刊论文

  • 发表日期：

    2025年10月8日

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  • Bo Chen,
  • Zheng Cai,
  • Xuguang An,
  • Jing Zhang,
  • Weitang Yao,
  • Daoyong Cong,
  • Qingyuan Wang,
  • Qingquan Kong

摘要

In the present study, (Ti, Nb)B reinforced Ti-Nb-Zr-Mn alloys were successfully fabricated through ball milling and spark plasma sintering (SPS) process with the addition of TiB2. The microstructure, mechanical behavior, and corrosion resistance in simulated body fluid of the as-prepared alloys were systematically investigated. It was found that (Ti, Nb)B phases were in situ formed through reaction between the Ti-Nb-Zr-Mn matrix and TiB2 particles, which significantly enhanced the mechanical strength of the alloys. As the TiB2 with equivalent B mass fractions increased from 0 to 1 wt.%, the ultimate tensile strength of the alloys improved significantly from 945 ± 13 MPa to 1259 ± 8 MPa, while the elongation reduced sharply from 20.2 ± 2.2% to 1.9 ± 0.5%. Microhardness tests showed that the materials’ hardness increased as the fraction of the (Ti, Nb)B phase increased. Notably, the elastic modulus increased from 77.1 ± 0.5 GPa to 93.7 ± 0.7 GPa. Moreover, the appropriate introduction of B was beneficial to the corrosion resistance of the alloy in simulated body fluids.