Effect of heat treatment on the microstructure and mechanical properties of biocompatible Ti–Ta–Nb–Zr alloys prepared by selective laser melting

IF 0.7 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

International Journal of Materials Research Pub Date : 2024-04-04 DOI:10.1515/ijmr-2022-0467

Kai Zhang, Ning Zhong, Xianjin Zhang, Chen Wen, Yun Zhou, Shangwen Lu

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Abstract

In this paper, a low elastic modulus, non-cytotoxic Ti-10Ta-2Nb-2Zr titanium alloy was prepared by selective laser melting additive manufacturing. The effect of annealing and solution heat treatment on the structure, mechanical properties, and tribological behavior were investigated. The results show that the microstructure was composed of the main α′ phase and a small amount of β phase. Heat treatment improved strength and elongation. The ultimate tensile strength (UTS) and elongation of the deposited specimen were 807 ± 8.74 MPa and 6.6 ± 0.75 %, respectively. After annealing, the UTS was nearly the same, but the elongation increased to 15.3 ± 0.95 %. After solution and aging, the UTS and elongation increased to 873 ∼ 813 MPa and 9.25–11.9 %, respectively. The elastic modulus of the deposited specimen was 120 ± 6.81 GPa. The elastic moduli of heat treated specimens ranged from 74 ± 4.04 to 96 ± 5.13 GPa. The elastic moduli of heat treated specimens were close to that of β-type titanium alloys. The wear mechanism was mainly abrasive wear and oxidative wear. Compared with the deposited and annealed specimens, the solution and age treated specimens had low friction coefficients and much better wear resistance. In terms of properties and cost, the designed alloy has great potential in the medical implant field.

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热处理对选择性激光熔化制备的生物相容性钛-钽-铌-锆合金微观结构和机械性能的影响

本文通过选择性激光熔融增材制造技术制备了一种低弹性模量、无细胞毒性的 Ti-10Ta-2Nb-2Zr 钛合金。研究了退火和固溶热处理对其结构、力学性能和摩擦学行为的影响。结果表明，微观结构由主要的 α′ 相和少量的 β 相组成。热处理提高了强度和伸长率。沉积试样的极限拉伸强度（UTS）和伸长率分别为 807 ± 8.74 兆帕和 6.6 ± 0.75 %。退火后，UTS 几乎不变，但伸长率增至 15.3 ± 0.95 %。固溶和老化后，UTS 和伸长率分别增至 873 ∼ 813 MPa 和 9.25-11.9%。沉积试样的弹性模量为 120 ± 6.81 GPa。热处理试样的弹性模量范围为 74 ± 4.04 至 96 ± 5.13 GPa。热处理试样的弹性模量接近于 β 型钛合金的弹性模量。磨损机理主要是磨料磨损和氧化磨损。与沉积和退火试样相比，固溶和时效处理试样的摩擦系数较低，耐磨性更好。就性能和成本而言，所设计的合金在医疗植入领域具有很大的潜力。

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来源期刊

International Journal of Materials Research 工程技术-冶金工程

CiteScore

1.30

自引率

12.50%

发文量

119

审稿时长

6.4 months

期刊介绍： The International Journal of Materials Research (IJMR) publishes original high quality experimental and theoretical papers and reviews on basic and applied research in the field of materials science and engineering, with focus on synthesis, processing, constitution, and properties of all classes of materials. Particular emphasis is placed on microstructural design, phase relations, computational thermodynamics, and kinetics at the nano to macro scale. Contributions may also focus on progress in advanced characterization techniques. All articles are subject to thorough, independent peer review.