Hot deformation of biomedical titanium alloys: a review of deformation mechanisms, constitutive modeling and processing maps analysis

IF 2.6 3区材料科学 Q2 ENGINEERING, MANUFACTURING

International Journal of Material Forming Pub Date : 2025-10-14 DOI:10.1007/s12289-025-01949-w

Sodiq Abiodun Kareem, Justus Uchenna Anaele, Olajesu Favor Olanrewaju, Emmanuel Omosegunfunmi Aikulola, Nkemakolam Chikodinaka Osondu-Okoro, Esther Dolapo Adewale, Samuel Ranti Oke, Michael Oluwatosin Bodunrin

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引用次数: 0

Abstract

Biomedical titanium alloys provide a unique mix of favorable biomechanical and biocorrosion characteristics and are lightweight, non-toxic, and highly biocompatible. These qualities make them highly desirable for the fabrication of medical implants. Hot working methods are crucial in producing titanium components as they break down the lamellar microstructure into a finer structure. This phase is essential in shaping the final microstructure and determining the qualities of the components. This review delved into the hot deformability, phase and microstructural evolution, and related constitutive equations used in biomedical titanium flow stress modelling. It describes the counteractive effect of the dynamic recrystallisation (DRX) and dynamic recovery (DRV) deformation mechanisms on the working hardening behaviour of the biomedical titanium alloys after hot deformation processing. It also discusses the effect of forming necklace structures and lamellar kinking structures. Notably, in biomedical titanium alloys, the hot deformation behaviour and dynamic softening effect are significantly influenced by the alloy composition and microstructural characteristics like dislocation movement and grain boundary diffusion. The use of processing maps to identify the instability regime—which includes cracks, flaws and flow instabilities that may arise as the biomedical titanium alloys are undergoing hot processing and to ascertain the best processing conditions is covered in the article. Finally, the article's conclusion includes suggestions for possible future research directions.

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生物医用钛合金热变形：变形机理、本构建模和加工图分析综述

生物医用钛合金具有良好的生物力学和生物腐蚀特性，并且重量轻，无毒，具有高度的生物相容性。这些特性使其成为制造医疗植入物的理想材料。热加工方法是生产钛部件的关键，因为热加工方法可以将层状微观结构分解成更精细的结构。这一阶段对于形成最终的微观结构和决定部件的质量至关重要。本文综述了生物医用钛流变应力模型中热变形性能、物相和微观组织演变以及相关的本构方程。研究了动态再结晶（DRX）和动态恢复（DRV）变形机制对医用钛合金热变形后加工硬化行为的抑制作用。讨论了形成项链结构和层状扭结结构的影响。值得注意的是，在医用钛合金中，合金成分和位错运动、晶界扩散等微观组织特征对热变形行为和动态软化效果有显著影响。使用加工图来识别不稳定状态，包括裂缝、缺陷和流动不稳定，这些可能在生物医用钛合金进行热加工时出现，并确定最佳加工条件。最后，文章的结论部分对未来可能的研究方向提出了建议。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Material Forming ENGINEERING, MANUFACTURING-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

5.10

自引率

4.20%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal publishes and disseminates original research in the field of material forming. The research should constitute major achievements in the understanding, modeling or simulation of material forming processes. In this respect ‘forming’ implies a deliberate deformation of material. The journal establishes a platform of communication between engineers and scientists, covering all forming processes, including sheet forming, bulk forming, powder forming, forming in near-melt conditions (injection moulding, thixoforming, film blowing etc.), micro-forming, hydro-forming, thermo-forming, incremental forming etc. Other manufacturing technologies like machining and cutting can be included if the focus of the work is on plastic deformations. All materials (metals, ceramics, polymers, composites, glass, wood, fibre reinforced materials, materials in food processing, biomaterials, nano-materials, shape memory alloys etc.) and approaches (micro-macro modelling, thermo-mechanical modelling, numerical simulation including new and advanced numerical strategies, experimental analysis, inverse analysis, model identification, optimization, design and control of forming tools and machines, wear and friction, mechanical behavior and formability of materials etc.) are concerned.