Research on production of microgroove arrays on TiAl intermetallic alloy by micro milling

IF 1.9 3区 工程技术 Q3 ENGINEERING, MANUFACTURING
H. Xia, G. Zhao, Yang Zhang, Liang Li, Ning He, Hans Nørgaard Hansen
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引用次数: 0

Abstract

TiAl intermetallic alloy is a superior lightweight material with excellent performance, and its micro features or components have promising applications in manufacturing fields. In this work, an investigation of micro milling of microgroove arrays on TiAl alloy was studied. The effects of cutting parameters including the feed per tooth (fz) and depth of cut ( ap) on the milling force, surface morphology, surface roughness and burr size of the micro-slots were investigated. The wear types and mechanisms of the micro end mills were also studied. The results showed that the optimal cutting parameters were fz = 3.5 μm/z and ap = 4 μm, which provided the best surface roughness Sa of 152 nm, top-burr heights on up- and down-milling sides of 19 and 19.5 μm respectively. Using the optimized cutting parameters, microgrooves with a width of 500 μm, aspect ratio of 5 and array period of 10 were fabricated successfully. Surface topography, dimensional accuracy and perpendicularity of the microgroove arrays were characterized. Results demonstrated that an increase in the microgroove number, microgroove edge chipping as well as burrs of the entrance and exit increased gradually. The dimensional error between the obtained width and the designed width of the microgroove was less than 2%, and the slope of the sidewalls reached more than 89°. The wear mechanisms of the micro end mills were abrasive wear and adhesive wear, and wear types were coating delamination, cutting edge chipping, and tool nose breakage.
利用微铣在 TiAl 金属间合金上制作微槽阵列的研究
TiAl 金属间合金是一种性能优越的轻质材料,其微特征或组件在制造领域具有广阔的应用前景。在这项工作中,对 TiAl 合金微槽阵列的微铣削进行了研究。研究了切削参数(包括每齿进给量(fz)和切削深度(ap))对微槽的铣削力、表面形态、表面粗糙度和毛刺尺寸的影响。此外,还研究了微型立铣刀的磨损类型和机理。结果表明,最佳切削参数为 fz = 3.5 μm/z 和 ap = 4 μm,其最佳表面粗糙度 Sa 为 152 nm,上铣边和下铣边的毛刺高度分别为 19 μm 和 19.5 μm。利用优化的切削参数,成功制造出了宽度为 500 μm、纵横比为 5、阵列周期为 10 的微槽。对微槽阵列的表面形貌、尺寸精度和垂直度进行了表征。结果表明,随着微槽数量的增加,微槽边缘的崩裂以及入口和出口的毛刺逐渐增加。获得的微槽宽度与设计宽度之间的尺寸误差小于 2%,侧壁斜度大于 89°。微型立铣刀的磨损机理为磨料磨损和粘着磨损,磨损类型为涂层脱层、切削刃崩裂和刀头断裂。
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来源期刊
CiteScore
5.10
自引率
30.80%
发文量
167
审稿时长
5.1 months
期刊介绍: Manufacturing industries throughout the world are changing very rapidly. New concepts and methods are being developed and exploited to enable efficient and effective manufacturing. Existing manufacturing processes are being improved to meet the requirements of lean and agile manufacturing. The aim of the Journal of Engineering Manufacture is to provide a focus for these developments in engineering manufacture by publishing original papers and review papers covering technological and scientific research, developments and management implementation in manufacturing. This journal is also peer reviewed. Contributions are welcomed in the broad areas of manufacturing processes, manufacturing technology and factory automation, digital manufacturing, design and manufacturing systems including management relevant to engineering manufacture. Of particular interest at the present time would be papers concerned with digital manufacturing, metrology enabled manufacturing, smart factory, additive manufacturing and composites as well as specialist manufacturing fields like nanotechnology, sustainable & clean manufacturing and bio-manufacturing. Articles may be Research Papers, Reviews, Technical Notes, or Short Communications.
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