Childs, THC, Arrazola, P-J, Aristimuno, P et al. (2 more authors) (2018) Ti6Al4V metal cutting chip formation experiments and modelling over a wide range of cutting speeds. Journal of Materials Processing Technology, 255. pp. 898-913. ISSN 0924-0136
Abstract
Measured forces, chip geometry and tool temperatures from machining a mill annealed Ti6Al4V at cutting speeds mainly from 1 to 100 m/min, but in some cases down to 0.1 m/min, are reported, as well as mechanical testing of the material. Finite element simulations with inputs the measured flow stress, and subsequently a small high temperature strain hardening recovery correction, and a failure model calibrated from the cutting tests at speeds from 1 to 10 m/min, give satisfactory agreement with the higher speed tests once surface strain hardening and damage from the previous pass of the tool are taken into account. This paper’s originality is firstly to show that more complicated flow stress models involving large strain softening are not needed provided shear failure is included; and secondly its failure model: this proposes a non-zero failed shear stress depending on local pressure and temperature. The simulations provide relations between tool mechanical and thermal loading and cutting conditions to aid process improvement.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Copyright (c) 2018 B. V. Elsevier Ltd. All rights reserved. This is an author produced version of a paper published in Soil Dynamics and Earthquake Engineering. Uploaded in accordance with the publisher's self-archiving policy |
Keywords: | Flow and failure modelling; Force and temperature measurement; Serrated chips |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 22 Jan 2018 11:41 |
Last Modified: | 31 Jan 2020 01:38 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.jmatprotec.2018.01.026 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:126440 |