Influence of the Microstructure of the Composite Ceramic Tools on their Performance when Machining Nickel Alloys

Vigneau, J.; Bordel, P.; Leonard, Andrew; Geslot, R.

doi:10.1016/s0007-8506(07)62543-8

Cited by 40 publications

(11 citation statements)

References 6 publications

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“…Exploring higher cutting speeds depends to a great extent on the cutting tool material [1]. General information on operating parameters employed when turning nickel-based alloys are available in both academic [2][3][4][5] and industrial literature [6,7]. From the very beginning, the development of an adequate predictive theory of the process was a major concern for all researchers.…”

Section: Introductionmentioning

confidence: 99%

Study of cutting speed on surface roughness and chip formation when machining nickel-based alloy

Khidhir

Mohamed

2010

J Mech Sci Technol

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Nickel-based alloy is difficult-to-machine because of its low thermal diffusive property and high strength at higher temperature. The machinability of nickel-based Hastelloy C-276 in turning operations has been carried out using different types of inserts under dry conditions on a computer numerical control (CNC) turning machine at different stages of cutting speed. The effects of cutting speed on surface roughness have been investigated. This study explores the types of wear caused by the effect of cutting speed on coated and uncoated carbide inserts. In addition, the effect of burr formation is investigated. The chip burr is found to have different shapes at lower speeds. Triangles and squares have been noticed for both coated and uncoated tips as well. The conclusion from this study is that the transition from thick continuous chip to wider discontinuous chip is caused by different types of inserts. The chip burr has a significant effect on tool damage starting in the line of depth-of-cut. For the coated insert tips, the burr disappears when the speed increases to above 150 m/min with the improvement of surface roughness; increasing the speed above the same limit for uncoated insert tips increases the chip burr size. The results of this study showed that the surface finish of nickel-based alloy is highly affected by the insert type with respect to cutting speed changes and its effect on chip burr formation and tool failure.

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Section: Introductionmentioning

confidence: 99%

Study of cutting speed on surface roughness and chip formation when machining nickel-based alloy

Khidhir

Mohamed

2010

J Mech Sci Technol

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“…However, the product will have high surface roughness value (Chou et al,2002 ;Suhail et al, 2010) Low feeding rate value and depth of cut will minimize the efficiency of turning process but the product will have low surface roughness value. Besides the main three parameters, length of cut is also one of the factors which may affect the result of turning process (Vigneau et al,1987;Arunachalam et al, 2004 ;Prasad et al, 2009). Large cutting length lengthens the time of feeding process and makes the work piece's surface rougher which is caused by the chipsthat pileon the tool'sedge during the feeding process.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Cutting Parameter towards Surface Roughness in Conventional Turning

Wijaya¹,

Gapsari²

2017

ijetst

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“…Formation of the DOC notch is considered to be determined by high gradient of thermal and mechanical stresses [10]. Other mechanisms involve adhesive wear associated with micro welds accompanied by tool material pluck out [11] and attrition wear, both by work-hardened edges of chips [12] and burrs formed at DOC line [13]. Minor notch is also an inherent wear mode when turning Alloy 718 with pure and whisker reinforced alumina [8], mixed alumina and Si 3 N 4 based ceramics [1].…”

Section: Introductionmentioning

confidence: 99%

Wear mechanisms of silicon carbide-whisker-reinforced alumina (Al2O3–SiCw) cutting tools when high-speed machining aged Alloy 718

Bushlya

Zhou

Avdovic

et al. 2013

Int J Adv Manuf Technol

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Link to publicationCitation for published version (APA): Bushlya, V., Zhou, J., Avdovic, P., & Ståhl, J-E. (2013). Wear mechanisms of silicon carbide-whisker-reinforced alumina (Al2O3-SiCw) cutting tools when high-speed machining aged Alloy 718. International Journal of Advanced Manufacturing Technology, 68(5-8), 1083 -1093 . DOI: 10.1007 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal Bushlya, V., Zhou, J., Avdovic, P., Ståhl, J. AbstractThe paper is aimed on identification and characterization of wear mechanisms of SiC whisker reinforced alumina when turning aged Alloy 718 under different cutting conditions and when machining dry and with coolant. Secondary and back-scatter electron microscopy accompanied by focus ion beam milling and EDX techniques were used for analysis of worn-out tools. Notch wear on the major cutting edge was found to consist of two notches: depth-of-cut notch and secondary notch located outside the chip area. The last was found to be governed by adhesion and attrition associated with adverse chip flow conditions. Formation of minor notch was related to attrition by the defects found on the machined surface. Diffusion of Ni, Fe and Cr into SiC whiskers was found to degrade them and facilitate adhesion. Chemical wear mechanisms were found to be responsible for degradation and decomposition of whiskers and formation of tribolayer on tool surfaces, which in turn was related to the reduced adhesion of Alloy 718 on the tool. Cracking on the tool rake and localized plastic deformation were found to further accelerate tool deterioration.

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Influence of the Microstructure of the Composite Ceramic Tools on their Performance when Machining Nickel Alloys

Cited by 40 publications

References 6 publications

Study of cutting speed on surface roughness and chip formation when machining nickel-based alloy

Study of cutting speed on surface roughness and chip formation when machining nickel-based alloy

The Effect of Cutting Parameter towards Surface Roughness in Conventional Turning

Wear mechanisms of silicon carbide-whisker-reinforced alumina (Al2O3–SiCw) cutting tools when high-speed machining aged Alloy 718

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