Simultaneous enhancement of strength, ductility and wear resistance of TC4 matrix composites via boron nitride incorporation

IF 4.8 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization Pub Date : 2025-06-16 DOI:10.1016/j.matchar.2025.115302

Pengyuan Li , Le Liu , Liyuan Xue , Shoukai Xu , Jiantuo Zhao , Xueyan Feng , Yiya Zhang , Mingyang Li , Longlong Dong , Junjie Xu

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引用次数: 0

Abstract

TiB_w/TC4(N) composites were synthesized through a combined process of ball milling and spark plasma sintering (SPS). The investigation systematically characterized the microstructural evolution, tensile properties, and wear resistance of the composites as a function of BN addition. Experimental results demonstrated that BN decomposed into boron (B) and nitrogen (N) during the sintering process. B atoms reacted in situ with the matrix to form TiB whiskers (TiB_w), while N atoms were incorporated into the matrix, enhancing its strength through solid solution strengthening. Notably, the composites with 0.15 wt% BN exhibited an exceptional strength-ductility synergy (1240 MPa/14.7 %), achieving simultaneous improvements in strength and ductility compared to pure TC4 and surpassing the mechanical properties of previously reported TC4 composites in the literature. The superior mechanical performance of the composites results from a synergistic combination of grain refinement strengthening, solid solution strengthening, and load transfer mechanisms. In addition, the composites exhibited markedly enhanced wear resistance in comparison with the pure TC4 alloy. This study proposes an effective strategy for developing titanium matrix composites with improved strength, ductility, and wear resistance for advanced engineering applications.

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氮化硼的掺入提高TC4基复合材料的强度、延展性和耐磨性

采用球磨和放电等离子烧结相结合的方法合成了TiBw/TC4(N)复合材料。研究系统地表征了BN添加对复合材料显微组织演变、拉伸性能和耐磨性的影响。实验结果表明，BN在烧结过程中分解为硼(B)和氮(N)。B原子与基体原位反应生成TiB晶须（TiBw）， N原子加入基体，通过固溶体强化增强基体强度。值得注意的是，添加0.15 wt% BN的复合材料表现出了出色的强度-塑性协同效应（1240 MPa/ 14.7%），与纯TC4相比，强度和塑性同时得到改善，并且超过了文献中先前报道的TC4复合材料的机械性能。复合材料优异的力学性能是晶粒细化强化、固溶强化和载荷传递机制协同作用的结果。此外，与纯TC4合金相比，复合材料的耐磨性显著提高。本研究为开发具有更高强度、延展性和耐磨性的钛基复合材料提供了一种有效的策略。

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

Materials Characterization 工程技术-材料科学：表征与测试

CiteScore

7.60

自引率

8.50%

发文量

746

审稿时长

36 days

期刊介绍： Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials. The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal. The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include: Metals & Alloys Ceramics Nanomaterials Biomedical materials Optical materials Composites Natural Materials.