Deformation Characteristics of Ultra-Fine Grained Al6061 Chip in Machining by Finite Element Method

Chun Ling Wu; Bang Yan Ye

doi:10.4028/www.scientific.net/AMM.44-47.2931

Paper Titles

Fundamental Equations of Load Deviation of the Gears in Compound Gearing
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Experimental Studies on Cold Extrusion of Thin Wall Ultra-Deep Blind Hole about 7A04 Recoil Spring Tube
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The Effect of Splicing Shape and Interval Length on the Failure Mode of Laminated Composites under Tensile Condition
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Investigation on the Applicability of Single-Yoke Magnetic Testing under Applied Stress
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Deformation Characteristics of Ultra-Fine Grained Al6061 Chip in Machining by Finite Element Method
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Management of Knowledge Base of Expert System for Fault Diagnosis of Rotating Machinery
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Application of Improved Genetic Algorithm in Maintenance Decision for Turbine-Generator Unit
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A Review of Piezoelectric Vibration Generator for Energy Harvesting
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Investigation of the Dilation of Epoxy with Negative Thermal Expansion Fillers
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 44-47Deformation Characteristics of Ultra-Fine Grained...

Deformation Characteristics of Ultra-Fine Grained Al6061 Chip in Machining by Finite Element Method

Abstract:

Ultra-fine grained chips with higher hardness and strength than bulk can be produced by severe plastic deformation during orthogonal metal cutting. A finite element method was developed to characterize the distribution of stress, strain, strain rate and temperature in the deformation area at different rake angles and cutting velocities. The coefficient of friction in the tool-chip interface is approximately obtained according model of mean coefficient of friction which is based on experiments in any machining conditions. The formation mechanics of ultra-fine grained chip is discussed and effect of rake angle on microstructure of chips is highlighted. The results of experiment and modeling have shown that chip materials with ultra-fine grained and high hardness can be produced with more negative tool rake angle at some lower cutting velocity.