Additive-subtractive hybrid manufacturing of Ti6Al4V surfaces with graphite-B4C composite coatings

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2025-05-11 DOI:10.1016/j.triboint.2025.110795

Yuan Hong , Cong Sun , Junchao Feng , He Zhang , Changhong Cao , Yanhui Tao , Liang Ma , Zhanlong Yang , Chengjie Yang

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引用次数: 0

Abstract

The additive-subtractive hybrid manufacturing is replacing the traditional coating technology, enabling performance-precision synergistic of Ti6Al4V surface. Therefore, a laser alloying grinding applicable to graphite-B₄C composite coating is proposed. Comparative experiments show that Graphite-25 % B₄C coating has excellent thermal conductivity, leading to a flat alloyed grinding surface (roughness S_a=3.3μm) with uniform microphase composition. The precipitation of granular TiC and acicular TiB₂ leads to a surface hardness of 900 HV, transforming the abrasive wear into fatigue wear and increasing the wear resistance. Acicular TiB₂ connected into a mesh increases the corrosion resistance of the surface with a 60 % reduction in i_corr. Laser alloying grinding enables performance-accuracy synergistic manufacturing of Ti6Al4V surfaces, which is vitally important in anti-fatigue manufacturing.

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石墨- b4c复合涂层Ti6Al4V表面增减复合制备

增减混合制造技术正在取代传统的涂层技术，实现Ti6Al4V表面的性能-精度协同。为此，提出了一种适用于石墨- b4c复合涂层的激光合金化磨削方法。对比实验表明，石墨-25 % B4C涂层具有良好的导热性，磨削表面平整，微相组成均匀，粗糙度Sa=3.3μm。颗粒状TiC和针状TiB2的析出使表面硬度达到900 HV，磨粒磨损转化为疲劳磨损，耐磨性提高。针状TiB2连接成网格增加了表面的耐腐蚀性，减少60% %的icorr。激光合金化磨削能够实现Ti6Al4V表面的性能-精度协同加工，这在抗疲劳制造中至关重要。

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

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

期刊介绍： Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.