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钛基复合材料的选择性激光熔化:材料、微观结构、缺陷及力学性能的深入分析

Selective laser melting of titanium matrix composites: An in-depth analysis of materials, microstructures, defects, and mechanical properties.

作者信息

Fang Jun, Tan Yong Chai, Tai Vin Cent, Janasekaran Shamini, Kee Chia Ching, Wang Dongsheng, Yang Youwen

机构信息

School of Mechanical Engineering, Tongling University, Tongling, AnHui, 244100, China.

Center for Modelling and Simulation, Faculty of Engineering, Built Environment and Information Technology, SEGi University, Jalan Teknologi, Kota Damansara, 47810, Petaling Jaya, Selangor Darul Ehsan, Malaysia.

出版信息

Heliyon. 2024 Nov 8;10(22):e40200. doi: 10.1016/j.heliyon.2024.e40200. eCollection 2024 Nov 30.

DOI:10.1016/j.heliyon.2024.e40200
PMID:39641018
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11617749/
Abstract

This paper provides an in-depth review of the advancements and challenges associated with Titanium Matrix Composites (TMCs) in Selective Laser Melting (SLM). Material selection, SLM processing parameters, and their influence on the microstructure and properties of TMCs are discussed. The relationship between processing parameters, material characteristics, and the development of defects such as balling, porosity, and cracking is examined. Critical factors influencing the evolution of microstructure and defect formation in TMCs processed by SLM are highlighted. Strengthening mechanisms such as dislocation movements, grain refinement, the Orowan process, and load-bearing capacity are analyzed, and their roles in enhancing hardness, tensile strength, corrosion resistance, and wear resistance are explored. It is indicated by key findings that less than 5 % reinforcement content by volume can significantly enhance mechanical properties, achieving maximum hardness values of approximately 1000 HV and tensile strength close to 1500 MPa. However, this improvement is accompanied by a notable decrease in elongation. The importance of optimizing SLM parameters such as laser power, scan speed, hatch distance, layer thickness, and particle contents to minimize defects and enhance material performance is underscored. Existing research gaps in defect management and material distribution are identified. Future research directions on improving TMCs performance through advanced SLM techniques are suggested.

摘要

本文深入综述了选择性激光熔化(SLM)中钛基复合材料(TMCs)的进展与挑战。讨论了材料选择、SLM工艺参数及其对TMCs微观结构和性能的影响。研究了工艺参数、材料特性与诸如球化、孔隙率和裂纹等缺陷形成之间的关系。强调了影响SLM加工的TMCs微观结构演变和缺陷形成的关键因素。分析了诸如位错运动、晶粒细化、奥罗万过程和承载能力等强化机制,并探讨了它们在提高硬度、拉伸强度、耐腐蚀性和耐磨性方面的作用。关键研究结果表明,体积增强含量低于5%可显著提高力学性能,实现约1000 HV的最大硬度值和接近1500 MPa的拉伸强度。然而,这种改进伴随着伸长率的显著降低。强调了优化SLM参数(如激光功率、扫描速度、扫描间距、层厚和颗粒含量)以最小化缺陷并提高材料性能的重要性。识别了缺陷管理和材料分布方面现有的研究差距。提出了通过先进的SLM技术改善TMCs性能的未来研究方向。

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