Cutting path-dependent machinability of SiCp/Al composite under multi-step ultra-precision diamond cutting

Lu, Shijin; Zhang, Junjie; Li, Zengqiang; Zhang, Jianguo; Wang, Xiaohui; Hartmaier, Alexander; Xu, Jianfeng; Yan, Yongda; Sun, Tao

doi:10.1016/j.cja.2020.07.039

Cited by 50 publications

(11 citation statements)

References 29 publications

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“…This method of calculating hardness conforms to the traditional definition of hardness, that is, the hardness is the work needed to cause plastic deformation of the unit volume of the material, which reflects the ability of the material to resist plastic deformation. The formula is shown in equation (7) as follows…”

Section: Principle and Methods Of Hardness Calculationmentioning

confidence: 99%

“…On the basis of the experimental results of material characterization, the reconstruction of materials and the study of mechanical properties in the finite element (FE) environment can solve the above problems well. Zhang et al 6,7 built a twodimensional microstructure model of RB-SiC based on scanning electron microscope (SEM) images and performed a FE simulation to study the critical cutting depth of RB-SiC brittleness-ductility transition. The simulation results were consistent with the experimental data of diamond notching.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on hardness testing of cemented carbide tool based on finite element method

Gao

Zheng

Chen

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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Hardness is a critical mechanical property of cutting tools, which significantly affects the cutting performance and wear resistance. Therefore, it is of great significance to obtain the hardness of the tool surface accurately. This paper presents a method based on finite element method (FEM) for studying the hardness of carbide tools. The microstructure of the carbide tool is obtained by scanning electron microscope(SEM). Combined with stereo principle, and secondary treatment, a three-dimensional multi-crystal model of carbide tool and indentation is established, and the model and hardness value obtained by different calculation methods are verified by microhardness test. The results show that the real hardness of the cemented carbide tool can be obtained by the indentation FEM model. The hardness values of cemented carbide tools are then calculated by the traditional method, Oliver-Pharr (OP) method and indentation method, respectively. It is found that the hardness value of the traditional method is the largest and fluctuates greatly, while the hardness values calculated by the OP method and indentation method are similar, and the fluctuation range of the hardness value calculated by the OP method is larger. In conclusion, the hardness calculated by the indentation work method is the best.

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Section: Principle and Methods Of Hardness Calculationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation on hardness testing of cemented carbide tool based on finite element method

Gao

Zheng

Chen

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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show abstract

“…Fig. 3 shows the microstructure of high volume fraction 70% SiCp/Al composite with the size of 20×15×10mm 3 . By comparing the shape and distribution of SiC particles in the metallographic photos of SiCp/Al composite, the model of SiC particles showed in Fig.…”

Section: Finite Element Simulation Modelmentioning

confidence: 99%

“…SiCp/Al composites own excellent properties of high specific strength, specific stiffness, specific modulus, good wear resistance and low heat expansion coefficient. So they are widely used in military, aerospace and electronic packaging [1][2][3][4]. However, It's difficult to machine because SiCp/Al composites have high brittleness and low toughness.…”

Section: Introductionmentioning

confidence: 99%

Study on the edge defects of high volume fraction 70% SiCp/Al composites in ultrasonic-assisted milling

Peng

Xiang

Lei

et al. 2022

Int J Adv Manuf Technol

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Directing at the hard machinability of high volume fraction 70% SiCp/Al composites， a longitudinal and torsional ultrasonic-assisted milling method is proposed to improve the edge quality and machining efficiency. By observing the metallographic structure of the material, the three-dimensional finite element model of SiC particles with spherical, ellipsoidal and random polyhedra is established and analyzed by ABAQUS simulation software. The formation mechanism of edge defects, stress distribution, defect characteristics and the effect of machining parameters on milling force are investigated during ultrasonic-assisted milling. The results show that the edge defects appear at the inlet, outlet and middle edge position, especiallyis more serious at the outlet position. The SiC particles failure modes mainly include particle pullout, particle shearing, crushing, and the edge defects mainly include matrix tearing, edge breakage, burrs, bulgesandpits. In a certain range of ultrasonic amplitude, ultrasonic-assisted milling can effectively reduce the surface fragmentation rate and milling force, slow down the expansion of cracks, increase the plastic flow of material, and obtain better edge quality compared with traditional machining method. By comparing the results of finite element simulation and experimental tests, it shows that the simulation results are in good agreement with the experimental tests.

show abstract

Section: Introductionmentioning

confidence: 99%

Study On The Edge Defects of High Volume Fraction 70% SiCp/Al Composites In Ultrasonic-Assisted Milling

Peng

Xiang

Lei

et al. 2021

Preprint

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Directing at the hard machinability of high volume fraction 70% SiCp/Al composites，a longitudinal and torsional ultrasonic-assisted milling method is proposed to improve the edge quality and machining efficiency. By observing the metallographic structure of the material, the three-dimensional finite element model of SiC particles with spherical, ellipsoidal and random polyhedra is established and analyzed by ABAQUS simulation software. The formation mechanism of edge defects, stress distribution, defect characteristics and the effect of machining parameters on milling force are investigated during ultrasonic-assisted milling. The results show that the edge defects appear at the inlet, outlet and middle edge position, especiallyis more serious at the outlet position. The SiC particles failure modes mainly include particle pullout, particle shearing, crushing, and the edge defects mainly include matrix tearing, edge breakage, burrs, bulgesandpits. In a certain range of ultrasonic amplitude, ultrasonic-assisted milling can effectively reduce the surface fragmentation rate and milling force, slow down the expansion of cracks, increase the plastic flow of material, and obtain better edge quality compared with traditional machining method. By comparing the results of finite element simulation and experimental tests, it shows that the simulation results are in good agreement with the experimental tests.

show abstract

Cutting path-dependent machinability of SiCp/Al composite under multi-step ultra-precision diamond cutting

Cited by 50 publications

References 29 publications

Investigation on hardness testing of cemented carbide tool based on finite element method

Investigation on hardness testing of cemented carbide tool based on finite element method

Study on the edge defects of high volume fraction 70% SiCp/Al composites in ultrasonic-assisted milling

Study On The Edge Defects of High Volume Fraction 70% SiCp/Al Composites In Ultrasonic-Assisted Milling

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