Enhanced wear resistance of AISI 1045 steel by TiAlN/CrN gradient coatings via toughness-hardness synergy

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films Pub Date : 2025-07-30 DOI:10.1016/j.tsf.2025.140756

Qinqin Wei , Xin Wang , Yun Lu , Zhineng Cheng , Haoran Dong , Xiao Wang , Guoqiang Luo , Qiang Shen

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引用次数: 0

Abstract

The rotating flange of vehicle chassis AISI 1045 steel is prone to friction-induced failure under high-speed and heavy-load conditions, leading to seal deterioration. This work provides a strategy to enhance the wear resistance by depositing multilayered TiAlN/CrN gradient coating on AISI 1045 steel substrates via arc ion plating. The microstructure, mechanical properties, and tribological behavior of the coating were systematically analyzed. The TiAlN/CrN gradient coating consists of CrN layer, TiAlN/CrN multilayer structure, and TiAlN layer, exhibiting high hardness (38.72 GPa) and elastic modulus (374.83 GPa), along with low residual stress (-448.5 MPa) and average friction coefficient (0.72). The maximum wear scar depth remains below the thickness of the TiAlN surface layer, with abrasive wear identified as the dominant mechanism. The gradient architecture effectively alleviates interfacial stress concentration and reduces residual stress through synergistic effects: ductile buffering by the CrN layer, hardness gradient transition via TiAlN/CrN multilayer, and surface hardening by the TiAlN surface layer. This innovative structural design provides a promising surface engineering solution for enhancing wear resistance of metallic materials under heavy-load operating conditions.

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TiAlN/CrN梯度涂层增强AISI 1045钢的耐磨性

汽车底盘AISI 1045钢的旋转法兰在高速、重载工况下容易发生摩擦失效，导致密封劣化。本研究提供了一种通过电弧离子镀在AISI 1045钢基体上沉积多层TiAlN/CrN梯度涂层以提高其耐磨性的策略。系统地分析了涂层的显微组织、力学性能和摩擦学性能。TiAlN/CrN梯度涂层由CrN层、TiAlN/CrN多层结构和TiAlN层组成，具有较高的硬度（38.72 GPa）和弹性模量（374.83 GPa）、较低的残余应力（-448.5 MPa）和平均摩擦系数（0.72）。最大磨损疤痕深度仍低于TiAlN表层厚度，磨粒磨损是主要的磨损机制。梯度结构通过协同效应：CrN层的韧性缓冲，TiAlN/CrN多层的硬度梯度转变，TiAlN表面层的表面硬化，有效地缓解了界面应力集中，降低了残余应力。这种创新的结构设计为提高金属材料在重载工况下的耐磨性提供了一种有前途的表面工程解决方案。

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

Thin Solid Films 工程技术-材料科学：膜

CiteScore

4.00

自引率

4.80%

发文量

381

审稿时长

7.5 months

期刊介绍： Thin Solid Films is an international journal which serves scientists and engineers working in the fields of thin-film synthesis, characterization, and applications. The field of thin films, which can be defined as the confluence of materials science, surface science, and applied physics, has become an identifiable unified discipline of scientific endeavor.