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        Studies on Residue Stress and Deformation Behavior of GCr15 Subjected to Whirlwind Milling

        Qin Guo,Youfeng Xu,Mulan Wang,Wenliang Yang,Yuliln Wang 한국정밀공학회 2020 International Journal of Precision Engineering and Vol.21 No.8

        Whirlwind milling is gaining extensive application for processing a large screw. Due to its specific forming principle, the profile of residual stresses and the deformation behavior would been given significant emphasis. Under conditions of large cutting depth (0.06–0.12 mm), the effect of cutting parameters on three characteristic parameters of the residual stress, such as surface residual stress, maximum residual stress and residual stress extreme value, was always different from that under small cutting depth (6–10 μm). Comparing to the right arc of the screw, the plastic deformation in the left arc is more obvious and far-reaching. The most extensive deformation region caused by WM cutting force was found for the topmost surface. As cutting speed increased, the nanohardness variation reflected the decreasing plastic deformation. Therefore, the research on physical change by WM is instructive for extending the fatigue life of the screw.

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