Reinforcing potential of MWCNTs on mechanical and machining performance of hot-pressed ZTA-MgO ceramic cutting inserts

Prajapati, Prabhat Kumar; Biswas, Pritam; Singh, Bipin Kumar; Bapanapalle, Chandra Obulesu; Ghosh, Ranajit; Mandal, Nilrudra

doi:10.1016/j.diamond.2023.110202

Cited by 10 publications

(4 citation statements)

References 46 publications

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“…Therefore, all variables are dependent only on the normal coordinates along this range. These variables are determined by the thermodynamic behavior of the material, the cutting conditions, the thickness shear angle, and the average friction coefficient of the front tool face [11]. Furthermore, the shear in the band is adiabatic, and the normal shear angle is determined by minimizing the minimum of the basic cutting energy.…”

Section: Elemental Cutting Force Modelingmentioning

confidence: 99%

“…The shear stress can be calculated using Equation (11). It is important to focus on the fact that the shear strain only occurs within the shear zone, and therefore, the boundary conditions for this shear strain are as follows:…”

Section: Elemental Cutting Force Modelingmentioning

confidence: 99%

“…Most researchers have carried out research on how to improve the strength of aluminum alloys [8,9]. However, the component has plane, hole, and other cutting structures, resulting in a direct impact on the service performance of the component in the application process [10,11]. Therefore, it is of great practical significance and engineering value to carry out research on the machinability of aluminum alloys.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic Analysis Based on the ZL205A Alloy Milling Force Model Study

Cui,

Shen,

Xin

et al. 2023

Lubricants

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The ZL205A aluminum alloy is mostly used in automobiles, aircraft, aerospace, and other mechanical components, but now, it focuses on the study of its casting performance, and there is still a lack of research on its cutting performance. In this paper, the milling ZL205A aluminum alloy was milled for testing and simulation analysis. The milling test showed that the impact of the axial cutting depth, radial cutting depth, feed, and cutting speed on the milling force was successively reduced. A thermodynamic analysis model is proposed to evaluate the cutting force and tool design in milling. The model considers the front angle and friction angle of the tool, in which the friction angle is adjusted by the friction coefficient, the variable is the cutting parameter, the constant is fitted through the milling experiment, and the effectiveness of the model is verified to predict the milling force. The pre-grinding test was carried out before the experiment, and the stability of the test was proved by observing the macroscopic shape of the chip and the wear of the cutting edge. The model comprehensively considers the tool angle and quickly calculates the minimum load on the milling cutter based on the optimal geometric parameters, which can be used to optimize the milling cutter structure and provide a theoretical basis for the preparation of ZL205A aluminum alloy mechanical components.

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Section: Elemental Cutting Force Modelingmentioning

confidence: 99%

Section: Elemental Cutting Force Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Thermodynamic Analysis Based on the ZL205A Alloy Milling Force Model Study

Cui,

Shen,

Xin

et al. 2023

Lubricants

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“…added 10% zirconia to alumina, the Vickers hardness and fracture toughness of ceramics increased from 11.6 GPa and 3.2 MPa m 1/2 to 16.8 GPa and 4.9 MPa m 1/2 , respectively. Therefore, composite ceramics of Al 2 O 3 and ZrO 2 exhibit both high hardness and high fracture toughness, commonly considered for the application of cutting tools [ 11 , 12 ], dies [ 13 ] and orthopedic implants [ 14 ], this composite ceramic material is known as ZTA (zirconia toughen alumina) ceramic.…”

Section: Introductionmentioning

confidence: 99%

Zirconia Toughened Alumina Ceramics via Forming Intragranular Structure

Li,

Cai,

Luo

et al. 2024

Materials

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The distribution of second phase particles in the microstructure of composite ceramics affects the mechanical properties, and the intragranular structures often result in better properties compared to the intergranular structures. However, it is difficult to obtain composite ceramics with intragranular structure by conventional route. To produce composite ceramics with an intragranular structure in a simpler route. In this work, starting powders with different phase compositions were obtained by the co-precipitation method, and zirconia toughened alumina (ZTA) composite ceramics were prepared with these starting powders by spark plasma sintering (SPS). The results show that it is easier to fabricate ZTA composite ceramics with an intragranular structure by using composite powders containing amorphous or transition phase Al2O3 as starting materials. The phase composition of the powder prepared by the co-precipitation method after calcination at 1100 °C is θ-Al2O3 and t-ZrO2, and the average grain size after sintering at 1500 °C is 1.04 ± 0.28 µm, and the maximum Vickers hardness and fracture toughness of the specimens reach 19.37 ± 0.43 GPa and 6.18 ± 0.06 MPa·m1/2, respectively. The ZrO2 particles were the core of crystallization and grow together with the Al2O3 matrix, forming the intragranular structure of ZTA ceramics. This work may provide a new idea for preparing composite ceramics with intragranular structure.

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