The Influence of Zirconium and Titanium Nitride Based Coatings on Tribodeformation Processes of Friction While Cutting with Carbide Inserts

IF 0.5 4区 工程技术 Q4 ENGINEERING, MECHANICAL
E. V. Fominov, M. M. Aliev, K. G. Shuchev, A. V. Fomenko
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Abstract

The article is devoted to an experimental study of the influence of wear-resistant coatings ZrN, TiN + ZrN, (Ti–Zr)N, ZrN–(Ti–Zr)N–TiN, and TiN, deposited on T15K6 hard alloy inserts, on the tribological and deformation characteristics of the process of turning 45 and 12Kh18N10Т steel workpieces, and subsequent comparison of the calculated values of the maximum temperatures of the rake face of the lathe cutter. When processing 45 steel, a significant reduction in contact and average temperature in the cutting zone is ensured by a combination of tribological and deformation indicators when using TiN + ZrN and ZrN + (Ti,Zr)N + TiN compositions. When turning 12Kh18N10T stainless steel, the presence of coatings on carbide inserts had a lesser effect on the course of deformation processes. The main effect of modifying the working surfaces of the tool is to change the thickness of the zone of secondary plastic deformations and to reduce the length of contact between the chips and the rake face. In this case, the greatest effect in reducing surface temperatures due to the influence on the complex of tribostrain indicators and enhancing the thermodissipative capabilities of the contact zone is demonstrated by ZrN and ZrN + (Ti,Zr)N + TiN coatings. Based on the results of full-scale experiments and digital modeling using the obtained experimental data, it was established that the temperature distributions in the area of tribocoupling of chips with the surface of a hard alloy in the presence of a multilayer coating on it are associated with the wear of metal-cutting tools, which makes it possible to evaluate the impact of wear-resistant coatings through changes in the temperature regime in the contact zone. Such an influence of surface modification on a set of tribostrain indicators, which also determine the nature of the distribution of contact temperatures, should be taken into account when developing new compositions and structures of wear-resistant coatings along with their physical and mechanical properties at the microlevel.

Abstract Image

Abstract Image

基于锆和氮化钛的涂层对使用硬质合金刀片切削时摩擦变形过程的影响
摘要 本文主要通过实验研究在 T15K6 硬质合金刀片上沉积的耐磨涂层 ZrN、TiN + ZrN、(Ti-Zr)N、ZrN-(Ti-Zr)N-TiN 和 TiN 对车削 45 和 12Kh18N10Т 钢工件过程中的摩擦学和变形特性的影响,以及随后对车刀前刀面最高温度计算值的比较。在加工 45 号钢时,使用 TiN + ZrN 和 ZrN + (Ti,Zr)N + TiN 组合时,通过结合使用摩擦学和变形指标,可确保显著降低切削区的接触温度和平均温度。在车削 12Kh18N10T 不锈钢时,硬质合金刀片上涂层的存在对变形过程的影响较小。改变刀具工作表面的主要作用是改变二次塑性变形区的厚度,并减少切屑与耙面之间的接触长度。在这种情况下,ZrN 和 ZrN + (Ti,Zr)N + TiN 涂层对三应变指标复合体的影响以及增强接触区的热消散能力对降低表面温度的作用最大。根据全尺寸实验结果和利用所获实验数据建立的数字模型,确定了在硬质合金表面存在多层涂层的情况下,切屑与硬质合金表面摩擦耦合区域的温度分布与金属切削工具的磨损有关,这使得通过接触区温度机制的变化来评估耐磨涂层的影响成为可能。表面改性对一系列三应变指标的影响也决定了接触温度分布的性质,因此在开发耐磨涂层的新成分和结构时,应考虑到这些指标以及它们在微观层面上的物理和机械性能。
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来源期刊
Journal of Friction and Wear
Journal of Friction and Wear ENGINEERING, MECHANICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
1.50
自引率
28.60%
发文量
21
审稿时长
6-12 weeks
期刊介绍: Journal of Friction and Wear is intended to bring together researchers and practitioners working in tribology. It provides novel information on science, practice, and technology of lubrication, wear prevention, and friction control. Papers cover tribological problems of physics, chemistry, materials science, and mechanical engineering, discussing issues from a fundamental or technological point of view.
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