温度和应变速率对Ti-5Mo-5Cu合金生物材料拉伸性能影响的分子动力学模拟研究

IF 3.1 Q2 MATERIALS SCIENCE, COMPOSITES Functional Composites and Structures Pub Date : 2023-09-01 DOI:10.1088/2631-6331/acf848
GOWTHAMAN S
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引用次数: 0

摘要

高效生物医学骨组织植入物的开发对生物医学研究领域产生了重大影响,并有助于老年人的康复。本研究采用分子动力学方法研究了植入材料(Ti-5Mo-5Cu合金)在不同温度和应变速率下的力学特性,以了解其物理现象。通过本研究,发现应变速率对材料的屈服应力和屈服应变等特性具有复杂的有益影响。由于其对各原子间的抑制行为和与温度效应有关的应变增韧效应的影响较大。此外,剪切应变和点缺陷分析证实了组织改变和多重位错的建立导致了Ti-5Mo-5Cu生物材料合金的变形行为。此外,径向分布分析表明,引入较高的环境温度会导致触发多种位错,这些位错负责变形行为并导致拉伸性能的主要降低。
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Study on the Influence of Temperature and Strain Rate on the Tensile Behavior of Ti-5Mo-5Cu alloy Biomaterial Alloy:A Molecular Dynamics Simulation
Abstract The development of efficient biomedical bone tissue implants has invoked significant impact in the biomedical research fields and aids the aged populated peoples. In this examination, the mechanical features of implant material (Ti–5Mo–5Cu alloy) has been investigated using the molecular dynamics method under varying temperature and strain rate to understand its physical phenomenon and through this study, it is found that the strain rate has offered a complex beneficial impact over the material characteristics such as yield stress and yield strain, owing to its higher impact over the restraining behavior between various atoms and strain toughening effect related to the temperature effect. Furthermore, the shear strain and point defect analysis has confirmed that the structural alteration and the establishment of multiple dislocations lead to induce the deformation behavior of Ti–5Mo–5Cu biomaterial alloy. Additionally, the radial distribution analysis has stated that the introduction of higher ambient temperature leads to invoking multiple dislocations which are responsible for the deformation behavior and cause the major reduction in tensile properties.
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来源期刊
Functional Composites and Structures
Functional Composites and Structures Materials Science-Materials Science (miscellaneous)
CiteScore
4.80
自引率
10.70%
发文量
33
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