Nanostructuring of the titanium alloy Ti-13Nb-13Zr (NanoTNZ) for osteosynthesis implants by continuous multidirectional swaging

IF 4.6 2区 工程技术 Q2 ENGINEERING, MANUFACTURING
Lukas Kluy , Peter Groche , Lina Klinge , Carsten Siemers , Christopher Spiegel
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引用次数: 0

Abstract

Musculoskeletal traumata involving damaged bones can reduce patients’ mobility and be life-threatening due to fracture-related infections. Osteosynthesis implants are increasingly vital for stabilizing fractures, especially with the growing prevalence of osteoporotic fractures in the aging population. However, advancements in manufacturing research are crucial for enhancing the biomechanical properties of these implants, improving healing outcomes, and enabling large-scale production. This study focuses on the development of a novel manufacturing process for the nanostructured titanium alloy Ti-13Nb-13Zr (NanoTNZ) using continuous multidirectional swaging (CMDS) followed by recrystallization and ageing. Various thermomechanical parameters were explored to ensure homogeneous strain and hardness distribution and fully nanostructure the alloy. Process limitations such as chevron cracks and shear bands were overcome by applying counter pressure for hydrostatic compression stress, enabling damage-free forming. Ageing of CMDS-TNZ leads to partial α''-martensite decomposition into finer structures of αs and β phase resulting in a microstructure with substructures smaller than 100 nm. NanoTNZ exhibits a Young's modulus of 92 GPa, an ultimate tensile strength of 981 MPa, and 8 % elongation at rupture. A bone plate of NanoTNZ was manufactured to demonstrate the efficacy of this continuous thermomechanical nanostructuring technique to produce next generation osteosynthesis implants.
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来源期刊
CIRP Journal of Manufacturing Science and Technology
CIRP Journal of Manufacturing Science and Technology Engineering-Industrial and Manufacturing Engineering
CiteScore
9.10
自引率
6.20%
发文量
166
审稿时长
63 days
期刊介绍: The CIRP Journal of Manufacturing Science and Technology (CIRP-JMST) publishes fundamental papers on manufacturing processes, production equipment and automation, product design, manufacturing systems and production organisations up to the level of the production networks, including all the related technical, human and economic factors. Preference is given to contributions describing research results whose feasibility has been demonstrated either in a laboratory or in the industrial praxis. Case studies and review papers on specific issues in manufacturing science and technology are equally encouraged.
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