刀具涂层和刀具磨损对Ti2AlNb金属间合金侧铣削表面和切屑形貌的影响

IF 4.2 2区 工程技术 Q2 ENGINEERING, MANUFACTURING
Xin Wang, Qing-Liao He, Biao Zhao, Wen-Feng Ding, Qi Liu, Dong-Dong Xu
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引用次数: 0

摘要

Ti2AlNb金属间合金属于钛铝(TiAl)家族,由于其具有低密度、高温强度和优异的抗氧化性等特殊性能,目前在航空航天工业中得到了广泛的研究和推广。然而,材料优异的断裂韧性导致其在加工过程中形成表面缺陷,从而影响加工表面的质量。在本研究中,对Ti2AlNb金属间合金进行了侧铣削试验,以研究刀具涂层和刀具磨损对加工表面质量和切屑形貌的影响。具体而言,对刀具寿命、加工表面粗糙度、表面形貌、表面缺陷和切屑形貌进行了详细研究。结果表明,刀具涂层具有保护作用,使涂层立铣刀的使用寿命比未涂层立铣刀提高了三倍。涂覆立铣刀产生了优越的加工表面形貌,这可以通过降低粗糙度和更一致的形貌来证明。刀具磨损对加工表面形貌有显著影响。随着刀具的磨损,材料碎片和进料痕迹的出现变得越来越严重。刀具涂层对切屑形貌影响不显著。刀具磨损导致沿切屑边缘的严重撕裂,非自由表面有明显的塑性流动,自由表面有明显的层状结构。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effects of tool coating and tool wear on the surface and chip morphology in side milling of Ti2AlNb intermetallic alloys

Effects of tool coating and tool wear on the surface and chip morphology in side milling of Ti2AlNb intermetallic alloys

Ti2AlNb intermetallic alloys, which belong to the titanium aluminum (TiAl) family, are currently being extensively researched and promoted in the aerospace industry because of their exceptional properties, including low density, high-temperature strength, and excellent oxidation resistance. However, the excellent fracture toughness of the material leads to the formation of surface defects during machining, thereby affecting the quality of the machined surface. In this study, Ti2AlNb intermetallic alloys were subjected to side-milling trials to investigate the influence of tool coating and tool wear on both the machined surface quality and chip morphology. Specifically, the tool life, machined surface roughness, surface morphology, surface defects, and chip morphology were investigated in detail. The results indicated that the tool coating provided a protective effect, resulting in a threefold increase in the service life of the coated end mill compared to that of the uncoated one. A coated end mill yields a superior machined surface topography, as evidenced by reduced roughness and a more consistent morphology. Tool wear has a significant effect on the morphology of machined surfaces. The occurrence of material debris and feed marks became increasingly severe as the tool wore off. The chip morphology was not significantly affected by the tool coating. However, tool wear results in severe tearing along the chip edge, obvious plastic flow on the non-free surface, and a distinct lamellar structure on the free surface.

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来源期刊
Advances in Manufacturing
Advances in Manufacturing Materials Science-Polymers and Plastics
CiteScore
9.10
自引率
3.80%
发文量
274
期刊介绍: As an innovative, fundamental and scientific journal, Advances in Manufacturing aims to describe the latest regional and global research results and forefront developments in advanced manufacturing field. As such, it serves as an international platform for academic exchange between experts, scholars and researchers in this field. All articles in Advances in Manufacturing are peer reviewed. Respected scholars from the fields of advanced manufacturing fields will be invited to write some comments. We also encourage and give priority to research papers that have made major breakthroughs or innovations in the fundamental theory. The targeted fields include: manufacturing automation, mechatronics and robotics, precision manufacturing and control, micro-nano-manufacturing, green manufacturing, design in manufacturing, metallic and nonmetallic materials in manufacturing, metallurgical process, etc. The forms of articles include (but not limited to): academic articles, research reports, and general reviews.
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