相变和应力诱导扭转对 Ti-13Nb-13Zr-7Ag 抗菌性能和弹性模量的协同效应

IF 2.6 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Metals Pub Date : 2024-08-08 DOI:10.3390/met14080901

Diangeng Cai, Jiayu Wang, Lei Yang, Xiaocen Xu, Erlin Zhang

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引用次数: 0

摘要

钛-13Nb-13Zr-7Ag（TNZ-7Ag）具有低弹性模量和优异的抗菌性能，因此在生物医学应用方面具有很大的潜力。然而，要在低弹性模量和高抗菌性能之间取得平衡十分困难。本研究对 TNZ-7Ag 进行了预变形和老化处理，以避免这一问题。结果证明，应力诱导的孪晶引起了大范围的 Ti2Ag 粒子团聚，进而提高了含 Ag 钛合金的抗菌性能。而预变形过程中形成的孪晶马氏体促进了 Ti2Ag 相的析出，抑制了 α 相的生长。因此，通过这些处理获得了具有低弹性模量和强抗菌性能的 TNZ-7Ag。所有结果表明，基于时效处理协同效应的预变形是开发新型生物医学钛合金的有效策略。制备出的低弹性模量抗菌钛合金可用于新型生物医学钛合金的开发。

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Synergistic Effect of Phase Transformation and Stress-Induced Twinning on the Antibacterial Property and Elastic Modulus of Ti-13Nb-13Zr-7Ag

Ti-13Nb-13Zr-7Ag (TNZ-7Ag) has a great potential for biomedical application due to its low elastic modulus and excellent antibacterial properties. However, it is difficult to balance low elastic modulus and high antibacterial properties. In this study, the TNZ-7Ag was treated by a pre-deformation and aging treatment to avoid this problem. The results proved that the stress-induced twinning caused a large range of Ti2Ag particle agglomeration, and in turn enhanced the antibacterial performance of Ag-containing titanium alloys. And the twinned martensite formed during the pre-deformation promoted the precipitation of Ti2Ag phase and inhibited the growth of α phase. As a result, TNZ-7Ag with both low elastic modulus and strong antibacterial properties was obtained by the treatments. All results demonstrated that pre-deformation based on the synergistic effect of aging treatment was an effective strategy to develop novel biomedical titanium alloys. Low-elastic-modulus antibacterial titanium alloys, which can be used for the development of novel biomedical titanium alloys, were prepared.

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来源期刊

Metals MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

4.90

自引率

13.80%

发文量

1832

审稿时长

1.5 months

期刊介绍： Metals (ISSN 2075-4701) is an open access journal of related scientific research and technology development. It publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Metals provides a forum for publishing papers which advance the in-depth understanding of the relationship between the structure, the properties or the functions of all kinds of metals.