Study of surface quality in high speed turning of Inconel 718 with uncoated and coated CBN tools

Zhou, Jinming; Bushlya, Volodymyr; Avdovic, Pajazit; Ståhl, Jan Eric

doi:10.1007/s00170-011-3374-7

Cited by 113 publications

(48 citation statements)

References 17 publications

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“…The uncut material is distributed over the machined surface and is ploughed towards the minor cutting edge in the form of side-flow [14,15], which increases the roughness. As expected from the calculation data ( Fig.…”

Section: Methodsmentioning

confidence: 99%

Performance and wear mechanisms of whisker-reinforced alumina, coated and uncoated PCBN tools when high-speed turning aged Inconel 718

Bushlya

Zhou

Avdovic

et al. 2012

Int J Adv Manuf Technol

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Section: Methodsmentioning

confidence: 99%

Performance and wear mechanisms of whisker-reinforced alumina, coated and uncoated PCBN tools when high-speed turning aged Inconel 718

Bushlya

Zhou

Avdovic

et al. 2012

Int J Adv Manuf Technol

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“…As a consequence, the generated temperature due to the cutting process will be elevated at the rake face. Also, a high cutting speed reduces the time to dissipate the temperature during the cutting process, and material plastic flow resulted [22,23]. In addition, because the AL-6XN SASS alloy is characterised by its low thermal conductivity, the temperature value in the shear zone will create a welding process between the International Journal of Manufacturing Engineering cutting edge and the removed material to form the BUE.…”

Section: Tool Wear and Built-up Edge Investigation Using Scanningmentioning

confidence: 99%

Impacts of Wear and Geometry Response of the Cutting Tool on Machinability of Super Austenitic Stainless Steel

Alabdullah

Polishetty

Littlefair

2016

International Journal of Manufacturing Engineering

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This paper presents a study of tool wear and geometry response when machinability tests were applied under milling operations on the Super Austenitic Stainless Steel alloy AL-6XN. Eight milling trials were executed under two cutting speeds, two feed rates, and two depths of cuts. Cutting edge profile measurements were performed to reveal response of cutting edge geometry to the cutting parameters and wear. A scanning electron microscope (SEM) was used to inspect the cutting edges. Results showed the presence of various types of wear such as adhesion wear and abrasion wear on the tool rake and flank faces. Adhesion wear represents the formation of the built-up edge, crater wear, and chipping, whereas abrasion wear represents flank wear. The commonly formed wear was crater wear. Therefore, the optimum tool life among the executed cutting trails was identified according to minimum length and depth of the crater wear. The profile measurements showed the formation of new geometries for the worn cutting edges due to adhesion and abrasion wear and the cutting parameters. The formation of the built-up edge was observed on the rake face of the cutting tool. The microstructure of the built-up edge was investigated using SEM. The built-up edge was found to have the austenite shear lamellar structure which is identical to the formed shear lamellae of the produced chip.

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“…The distortions were arranged in parallel bands which have a size range of 12.5-25 m. For trial 4 position 3 ( Figure 6(f)), the distortion sizes increased up to 62 m in some areas. Effects of the BUE and chipping wear deposit remarkably lead to large distortions, as reported by Zhou et al [16], of 196 m in size above the machined surface and cause the roughness values to increase.…”

Section: Microstructural Inspection Of the Microstructure Of Thementioning

confidence: 67%

Microstructural and Surface Texture Analysis due to Machining in Super Austenitic Stainless Steel

Alabdullah

Polishetty

Littlefair

2016

Journal of Metallurgy

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Inferior surface quality is a significant problem faced by machinist. The purpose of this study is to present a surface texture analysis undertaken as part of machinability assessment of Super Austenitic Stainless Steel alloy-AL6XN. The surface texture analysis includes measuring the surface roughness and investigating the microstructural behaviour of the machined surfaces. Eight milling trials were conducted using combination of cutting parameters under wet machining. An optical profilometer (noncontact) was used to evaluate the surface texture at three positions. The surface texture was represented using the parameter, average surface roughness. Scanning Electron Microscope was utilised to inspect the machined surface microstructure and correlate the microstructure with the surface roughness. Results showed that maximum roughness values recorded at the three positions in the longitudinal direction (perpendicular to the machining grooves) were 1.21 m (trial 1), 1.63 m (trial 6), and 1.68 m (trial 7), respectively, whereas the roughness values were greatly reduced in the lateral direction. Also, results showed that the feed rate parameter significantly influences the roughness values compared to the other cutting parameters. The microstructure of the machined surfaces was distorted by the existence of cracks, deformed edges, and bands and wear deposition due to machining process.

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Study of surface quality in high speed turning of Inconel 718 with uncoated and coated CBN tools

Cited by 113 publications

References 17 publications

Performance and wear mechanisms of whisker-reinforced alumina, coated and uncoated PCBN tools when high-speed turning aged Inconel 718

Performance and wear mechanisms of whisker-reinforced alumina, coated and uncoated PCBN tools when high-speed turning aged Inconel 718

Impacts of Wear and Geometry Response of the Cutting Tool on Machinability of Super Austenitic Stainless Steel

Microstructural and Surface Texture Analysis due to Machining in Super Austenitic Stainless Steel

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