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Inverse size effect and deformation mechanism in Ti-6Al-4V cutting process – investigation on effect of bimodal microstructure on machining

Zan, Shusong; Liu, Guangyu; Liao, Zhirong; Axinte, Dragos; Fang, Fengzhou

Inverse size effect and deformation mechanism in Ti-6Al-4V cutting process – investigation on effect of bimodal microstructure on machining Thumbnail


Authors

Shusong Zan

Guangyu Liu

DRAGOS AXINTE dragos.axinte@nottingham.ac.uk
Professor of Manufacturing Engineering

Fengzhou Fang



Abstract

Ti-6Al-4 V finds wide applications in industrial areas due to its unique properties. Though, how its special microstructure (i.e., properties mismatch between different phases) could influence the surface/chip formation mechanism when machining (e.g., size effect) remains unclear. In this study, cutting experiments, simulation and post-processing materials characterizations of bimodal Ti-6Al-4 V were performed. Two interesting new phenomena were revealed: (i) variation of chip segmentation mechanism from regular serrated chip to serration at phase boundary when undeformed chip thickness reduces, (ii) ‘inverse size effect’ of specific shear energy. These findings open a new window of optimizing machining parameters for this specific material.

Journal Article Type Article
Acceptance Date Apr 14, 2023
Online Publication Date Apr 14, 2023
Publication Date 2023-04
Deposit Date May 9, 2023
Publicly Available Date May 11, 2023
Journal CIRP Annals
Print ISSN 0007-8506
Publisher Elsevier BV
Peer Reviewed Peer Reviewed
DOI https://doi.org/10.1016/j.cirp.2023.04.042
Keywords Titanium; Machining
Public URL https://nottingham-repository.worktribe.com/output/19789303
Publisher URL https://www.sciencedirect.com/science/article/pii/S0007850623000847
Additional Information This article is maintained by: Elsevier; Article Title: Inverse size effect and deformation mechanism in Ti-6Al-4V cutting process – investigation on effect of bimodal microstructure on machining; Journal Title: CIRP Annals; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.cirp.2023.04.042; Content Type: article; Copyright: © 2023 The Author(s). Published by Elsevier Ltd on behalf of CIRP.

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