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

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.

Citation

Zan, S., Liu, G., Liao, Z., Axinte, D., & Fang, F. (2023). Inverse size effect and deformation mechanism in Ti-6Al-4V cutting process – investigation on effect of bimodal microstructure on machining. CIRP Annals - Manufacturing Technology, https://doi.org/10.1016/j.cirp.2023.04.042

• 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
• Electronic ISSN: 1726-0604
• Publisher: Elsevier
• 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.