Determination of Chip Velocity Field in Metal Cutting

Bi, Xue Feng; List, Gautier; Sutter, Guy; Molinari, A.; Liu, Yong Xian

doi:10.4028/www.scientific.net/amm.16-19.471

Cited by 1 publication

(1 citation statement)

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“…e presented flow line function can be used not only for NECAP: the formation of chips during a machining process is similar to NECAP, but also for a better description of the machining process. e previous flow function approach was already employed in machining [15].…”

Section: Discussionmentioning

confidence: 99%

A New Flow Line Function for Modeling Material Trajectory and Textures in Nonequal-Channel Angular Pressing

Hasani

Tóth

Rouhani

2019

Advances in Materials Science and Engineering

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One of the most applied severe plastic deformation processes is ECAP (equal-channel angular pressing) which is suitable to produce ultrafine-grained metallic materials with high mechanical performance. A variant of the ECAP process was proposed in 2009, which consists in reducing the diameter of the exit channel of the die; it is named the nonequal-channel angular pressing (NECAP) process. A flow line function was also proposed to describe the material flow and the deformation field during NECAP. In the present work, an improved version of that flow function is presented containing two additional parameters compared to the previously proposed function. The new parameters permit to control precisely the shapes and the positions of the flow lines. The new flow function was applied to 90° NECAP of commercially pure aluminum to characterize the deformation field and the extent of the plastic deformation zone. The crystallographic texture evolution is also simulated using the new function. Excellent agreements with experiments were obtained for both the flow line trajectories and the crystallographic texture.

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Section: Discussionmentioning

confidence: 99%