Investigations on deformation and fracture behavior of workpiece material during high speed machining of 7050-T7451 aluminum alloy

Wang, Qingqing

doi:10.1016/j.cirpj.2016.05.007

Cited by 39 publications

(13 citation statements)

References 33 publications

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“…Feed force at chip load of 0.013 mm/tooth in half-immersion up-milling and feed force at chip load of 0.016 mm/tooth in both half-immersions (as shown in Figure 2), normal force at chip load of 0.016 mm/tooth and 0.019 mm/tooth in both half-immersions (as depicted in Figure 3), axial force at chip load of 0.013 mm/tooth in both immersions and axial force at chip load of 0.016 mm/tooth in half-immersion up-milling (as presented in Figure 4), and resultant force at chip load of 0.013 mm/tooth and 0.016 mm/tooth in both half-immersions (as illustrated in Figure 5) all had an obvious U-shaped behaviour. Furthermore, the phenomenon in which the cutting force initially decreased and subsequently increased in metal machining might be associated with the ductile-to-brittle transition, which journal.ump.edu.my/ijame ◄ caused the machined materials to become brittle at a high strain rate or at low temperature due to the material's ability to absorb a specific amount of energy during machining operations [20][21][22][23]. In addition, the cutting force for the transition period from the ductile regime to the brittle regime will decrease when the spindle speed is increased.…”

Section: Resultsmentioning

confidence: 99%

Effect of Increasing Spindle Speed at a Constant Chip Load on Cutting Force Behaviour of Hastelloy X

Nor¹,

Baharudin²,

Ghani³

et al. 2021

IJAME

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Cutting force is vital in machining nickel-based superalloys due to their excellent mechanical properties, thus creating difficulty in cutting. In the current scenario of metal machining, milling processes require high spindle speed and low chip load, which result in a low cutting force. However, low chip load not only result in low cutting force but also result in a low material removal rate (MRR). It is contrary to the ultimate high-speed machining (HSM) goal, which is to improve productivity and cost-effectiveness. Therefore, the emergence of an approach for achieving simultaneous low cutting force and high MRR is crucial. This paper presents the effect of increasing spindle speed at a constant chip load on the cutting force of Hastelloy X during half-immersion up-milling and half-immersion down-milling. In both half-immersions, the simulation results and experimental results are in good agreement. The percentage contribution of feed force, normal force and axial force to the resultant force can be arranged descendingly from high to low as axial force > normal force > axial force. Moreover, feed force, normal force, axial force and resultant force have a U-shaped behaviour. The spindle speed of 24,100 rpm and a chip load of 0.019 mm/tooth were found to achieve both low cutting force and high MRR.

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Section: Resultsmentioning

confidence: 99%

Effect of Increasing Spindle Speed at a Constant Chip Load on Cutting Force Behaviour of Hastelloy X

Nor¹,

Baharudin²,

Ghani³

et al. 2021

IJAME

View full text Add to dashboard Cite

show abstract

“…Different types of specimens, including standard cylindrical specimens [61,62], hat-shaped specimens [63,64], and pressure-shear plates [65,66], have been attempted in SHPB tests to study material dynamic deformation behavior. Nevertheless, with the cutting speed increasing further to UHSMC range, the strain rate of material deformation can be higher than 10 6 /s [67] approaching that in high-speed impact test.…”

Section: Materials Dynamic Properties Under High Speed Loadingmentioning

confidence: 92%

Advancements in material removal mechanism and surface integrity of high speed metal cutting: A review

Wang

Cai

Luo

et al. 2021

International Journal of Machine Tools and Manufacture

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159

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“…This closeness of marks is due to the lesser nose radius of the PCD tool insert. From the SEM images (figure 11) of chip underface, it was observed that the chips go under severe plastic deformation, which causes ductile tearing and this goes on increasing with increasing velocity [39]. The uniform surface profile obtained during turning by shear mode of cutting with PCD.…”

Section: Chip Under-face and Chip Morphology Studymentioning

confidence: 97%

Influence of cutting parameters on cutting forces and surface roughness in dry turning of Al using PCD and different coated tools

et al. 2019

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Aluminium (Al) is the suitable material for aerospace and automotive industries due its light weight, corrosion resistance, weldability, non-magnetic and mechanical properties. But, machining of Al and its alloy and finding the suitable tool is really a big challenge because of its formation of BUE (Built-up Edge) and BUL (Built-up Layer). This paper presents the influence of cutting parameters (speed, feed and depth of cut) and its effect on the cutting force and the surface finish. Five different advanced cutting tool inserts (SPUN WC, SPGN WC, PCD, WC ? TiN and WC ? Ti(C, N) TiN ? Al 2 O 3 ) at different cutting speed (V c ) ranging between 300 m/min and 700 m/min and feed rate (f) of 0.045, 0.06, 0.09 and 0.125 mm/rev at a depth of cut of 0.2 mm (constant throughout the experiment) were taken for the experiment. Tool inserts were characterized by Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) analysis. The cutting forces were measured using Kistler force dynamometer. Amongst all tools, PCD provided a better result in all aspects but surprisingly WC tool provided a better surface finish with lesser tool wear. For all cutting conditions, high speed (670 m/min) and low feed rate (0.045 mm/rev) were recommended. adhana(0123456789().,-volV)FT3 ](0123456789().,-volV)

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Investigations on deformation and fracture behavior of workpiece material during high speed machining of 7050-T7451 aluminum alloy

Cited by 39 publications

References 33 publications

Effect of Increasing Spindle Speed at a Constant Chip Load on Cutting Force Behaviour of Hastelloy X

Effect of Increasing Spindle Speed at a Constant Chip Load on Cutting Force Behaviour of Hastelloy X

Advancements in material removal mechanism and surface integrity of high speed metal cutting: A review

Influence of cutting parameters on cutting forces and surface roughness in dry turning of Al using PCD and different coated tools

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