Impact of Equal Channel Angular Pressing (ECAP) on the machinability of an aluminium alloy (EN AW-6082)

Wiesinger, Gerhard; Baumann, Christian; Krystian, Maciej

doi:10.1016/j.matpr.2018.08.131

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…This effect may be related to the critical microstructure refinement of titanium below 500 nm mentioned by Lapovok 34 . The effects of microstructure refinement on machinability were also observed in titanium alloys 38 , 39 , but also in other materials such as aluminum alloy 40 , 41 and copper 42 , 43 characterized by a refinement microstructure obtained by plastic deformation processes with severe deformations. After a cutting depth increase to a p = 0.7 mm, component F c characteristics as a function of cutting speed were reversed relative to those for lower cutting depths ( a p = 0.3 and 0.5 mm).…”

Section: Resultsmentioning

confidence: 80%

The impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine-grained Ti grade 2 intended for fasteners

Skiba

Kulczyk

Przybysz-Gloc

et al. 2022

Sci Rep

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The study aimed to examine the effect of the hydrostatic extrusion (HE) process on the machinability of Ti grade 2 (Ti) in the turning process. After the deformation with true strain ɛ = 2.28, the microstructure was significantly refined to a grain size of 100 nm, resulting in an increase in the mechanical properties, UTS strength by 190%, YS yield strength by 230%Cutting forces for Ti in the initial state and after HE were analyzed at cutting depths ap = 0.3 mm and 0.5 mm, the variables were cutting speed Vc (20, 30 and 50 m/min) and feed rate f (0.08 and 0.13 m/s).The impact of the microstructure refinement in Ti after HE on the high cutting depth machinability deterioration (ap = 0.7 mm) was identified. This phenomenon is particularly noticeable at lower cutting speeds Vc = 20 and 30 m/min at which cutting forces are higher. Application tests of Ti after HE showed a significantly lower susceptibility to buckling during threading. As a result of the tests carried out for the Ti in the initial state, it was not possible to achieve the tolerance of pitch diameter of the thread required by standards, d2 at two of the three cutting depths tested. In turn, for the Ti after HE, the thread tolerances required by the standards were achieved for all tested cutting depths.

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Section: Resultsmentioning

confidence: 80%

The impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine-grained Ti grade 2 intended for fasteners

Skiba

Kulczyk

Przybysz-Gloc

et al. 2022

Sci Rep

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The impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine-grained AA5083 alloy

Skiba

Kossakowska

Kulczyk

et al. 2020

Journal of Manufacturing Processes

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Modeling and Analysis of Machining Parameters of Ecap Processed Commercial Pure Aluminum Using RSM and Ann

2021

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Equal channel angular pressing (ECAP) processed materials have higher grain refinement and strength, and they exhibit more surface roughness when they are machined. This enhancement in the properties highly influences the surface roughness and material removal rate of the materials. The commercial pure aluminum has a wide variety of applications when it is enhanced with high strength properties. In this paper, the machinability of commercially pure aluminum processed through ECAP is investigated in turning operations. Different ECAP processes are carried out to study the microstructural characterization and mechanical properties of the material. The material removal rate and surface roughness are tested by performing the turning operation in the CNC lathe with chemical vapor deposited carbide tool such that the feed rate, spindle speed and depth of cut are considered as the machining variables. To create a hypothesis for the experimentation, the empirical models are developed for the objective functions using the statistical technique response surface methodology (RSM) such that the response models are the objective functions and the model variables are the machining parameters. The response models are verified for the adequacy through ANOVA and [Formula: see text]-test, and also verified for the closeness with the experimental results. Artificial neural network (ANN)-based empirical equations are also developed for the objective functions using the RSM design matrix and the results of both the RSM and ANN are compared for the suitability.

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Impact of Equal Channel Angular Pressing (ECAP) on the machinability of an aluminium alloy (EN AW-6082)

Cited by 3 publications

References 2 publications

The impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine-grained Ti grade 2 intended for fasteners

The impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine-grained Ti grade 2 intended for fasteners

The impact of severe plastic deformations obtained by hydrostatic extrusion on the machinability of ultrafine-grained AA5083 alloy

Modeling and Analysis of Machining Parameters of Ecap Processed Commercial Pure Aluminum Using RSM and Ann

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