A study of regularly spaced shear bands and morphology of serrated chip formation in microcutting process
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Microstructure evaluation of shear bands of microcutting chips in AA6061 alloy under the mechanochemical effect
2021, Journal of Materials Science and TechnologyA new geometric model of serrated chip formation in high-speed machining
2021, Journal of Manufacturing ProcessesCitation Excerpt :Then, the specific geometry of serrated chip can be determined by using those geometric characterization parameters. Wang et al. [23] observed shear band and regular distribution in serrated chips. Where, the spacing of shear bands affected the fluctuation of the cutting force, the temperature rise and cutting energy.
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2020, Journal of Manufacturing SystemsCurrent understanding of surface effects in microcutting
2020, Materials and DesignCitation Excerpt :The phenomenon reflected differences in the stress-strain curves where shear testing displayed indications of the approaching failure point and tensile testing abruptly ended without warning. This perspective of shearing can be applied to the shearing process during chip formation [115] to explain the continuity in material flow under external pressures instead of submission to brittle failure. It is good to note that the hydrostatic pressure has a large influence on the mechanical properties on various types of engineering materials such as plastics [116,117] and metals [118,119].
Investigation on the microstructure and machinability of ASTM A131 steel manufactured by directed energy deposition
2020, Journal of Materials Processing TechnologyCitation Excerpt :When the stress in the shear band exceeds the limit of elastic deformation, the relative movement between the chip and workpiece happens and the serrated chips are produced. A theoretical model has been developed in our previous works by Wang et al. (2010a) and Wang et al. (2010b). Grain size is one of the influencing factors on the location of relative movement.
Crystal plasticity finite element modeling and simulation of diamond cutting of polycrystalline copper
2019, Journal of Manufacturing Processes