NDLI: Analysis on the effect of phase boundary in meso-cutting of AISI1045 based on the microstructure-level simulation

Content Provider	Springer Nature Link
Author	Zheng, Minggui Xie, Lijing Shang, Tengyi Chen, Xiaolei Fu, Tie
Copyright Year	2016
Abstract	In this paper, in order to discover the mechanism of chip formation in meso-cutting, an equivalent homogenous material (EHM) model and a microstructure-level model based on the real microstructure were built up for finite element analysis (FEA) of the meso-cutting process of hot-rolled AISI1045. The advantage of the microstructure-level model over the EHM ones includes its capability in revealing the hidden phenomena and mechanisms related to grain, grain boundary, and phase structure besides the higher prediction precision. And these phenomena and mechanisms are very important for the correct understanding of meso- and micro-cutting. After experimental verification, the microstructure-level model was used to analyze the effects of phase boundary on the chip morphology, strain, stress, etc. in the meso-cutting. It was found that large strain took place in the interior of the ferrite and built up the plumps on the free chip surface. And large strain gradient formed around the phase boundaries by the combining effects of the generation of geometrically necessary dislocations for meeting the deformation compatibility between grains, image force, and pile-up of dislocations. In addition, the reversal of the strain, stress, and strain rate across the phase boundary was noticed as well. At last, the size effect was analyzed from the perspective of the strengthening of material due to the variation of the hydrostatic pressure with the ratio (λ) of a p /r e and its effect on defects along the phase boundaries and shear stress.
Starting Page	3229
Ending Page	3238
Page Count	10
File Format	PDF
ISSN	02683768
Journal	The International Journal of Advanced Manufacturing Technology
Volume Number	90
Issue Number	9-12
e-ISSN	14333015
Language	English
Publisher	Springer London
Publisher Date	2016-11-02
Publisher Place	London
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Microstructure-level model Meso-cutting Dislocation theory FEA Phase boundary Industrial and Production Engineering Media Management Mechanical Engineering Computer-Aided Engineering (CAD, CAE) and Design
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Mechanical Engineering Computer Science Applications Software

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