Experimental and Numerical Fatigue Life Assessment of Ti–5Al–2.5Sn Reinforced Tungsten Particle Composites

IF 1.6 4区材料科学 Q2 Materials Science Transactions of The Indian Institute of Metals Pub Date : 2024-07-23 DOI:10.1007/s12666-024-03407-8

M. Giridharadhayalan, T. Ramkumar, M. Selvakumar, S. Parveen

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Abstract

The aim of this study is to assess the fatigue load-carrying characteristics of Ti–5Al–2.5Sn alloy reinforced with tungsten particles and determine its appropriateness for aerospace and other commercial uses. Ti–5Al–2.5Sn composite samples were produced using five distinct weight percentages of tungsten particles (0.5%, 1.0%, 1.5%, 2.0%, and 2.5%) reinforcement through the microwave sintering technique. Five ASTM standard test samples were subjected to fatigue tests along with field emission scanning electron microscope (FE-SEM) analysis to examine the impact of tungsten reinforcement in a titanium alloy matrix. Analysis of crack propagation and failure study was conducted using finite element analysis (FEA) software. The experiment and FEA simulation results indicate that 0.5 wt% of tungsten-reinforced matrix (Ti–5Al–2.5Sn) composites show significant improvement in fatigue performance. Crack initiation begins in the matrix region due to cyclic stress, and the particle-breaking mechanism occurs under heavy loading conditions and was examined using FE-SEM. The results revealed that Ti–3Al–2.5Sn–2W composites acquire experimental fatigue strength of 384 MPa and 406 MPa which is 3.92% and 1% higher than that of the Ti–5Al–2.5Sn matrix. However, the finite element fatigue strength of 398 MPa and 412 MPa are 4.87% and 1% higher than that of the Ti–5Al–2.5Sn matrix.

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Ti-5Al-2.5Sn 增强钨粒子复合材料的实验和数值疲劳寿命评估

本研究旨在评估用钨颗粒增强的 Ti-5Al-2.5Sn 合金的疲劳承载特性，并确定其是否适合航空航天和其他商业用途。通过微波烧结技术，使用五种不同重量百分比的钨颗粒（0.5%、1.0%、1.5%、2.0% 和 2.5%）增强材料制作了 Ti-5Al-2.5Sn 复合材料样品。对五个 ASTM 标准测试样品进行了疲劳测试和场发射扫描电子显微镜（FE-SEM）分析，以研究钛合金基体中钨增强材料的影响。使用有限元分析（FEA）软件进行了裂纹扩展分析和失效研究。实验和有限元分析模拟结果表明，0.5 wt% 的钨增强基体（Ti-5Al-2.5Sn）复合材料的疲劳性能有显著改善。在循环应力的作用下，裂纹从基体区域开始出现，在重载条件下出现颗粒断裂机制，并使用 FE-SEM 对其进行了检验。结果表明，Ti-3Al-2.5Sn-2W 复合材料的实验疲劳强度分别为 384 兆帕和 406 兆帕，比 Ti-5Al-2.5Sn 基体分别高出 3.92% 和 1%。然而，有限元疲劳强度分别为 398 兆帕和 412 兆帕，比 Ti-5Al-2.5Sn 基体分别高出 4.87% 和 1%。

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来源期刊

Transactions of The Indian Institute of Metals Materials Science-Metals and Alloys

CiteScore

2.60

自引率

6.20%

发文量

期刊介绍： Transactions of the Indian Institute of Metals publishes original research articles and reviews on ferrous and non-ferrous process metallurgy, structural and functional materials development, physical, chemical and mechanical metallurgy, welding science and technology, metal forming, particulate technologies, surface engineering, characterization of materials, thermodynamics and kinetics, materials modelling and other allied branches of Metallurgy and Materials Engineering. Transactions of the Indian Institute of Metals also serves as a forum for rapid publication of recent advances in all the branches of Metallurgy and Materials Engineering. The technical content of the journal is scrutinized by the Editorial Board composed of experts from various disciplines of Metallurgy and Materials Engineering. Editorial Advisory Board provides valuable advice on technical matters related to the publication of Transactions.