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The International Journal of Advanced Manufacturing Technology
Published in: The International Journal of Advanced Manufacturing Technology 3-4/2022

20-08-2022 | ORIGINAL ARTICLE

Study on formation mechanism of serrated chip of Ti-6Al-4V titanium alloy based on shear slip theory

Authors: Xiaohua Zhu, Jiangmiao Shi, Yunhai Liu, Yuhong Jiang, Bowen Zhou, Xiao Zhao

Published in: The International Journal of Advanced Manufacturing Technology | Issue 3-4/2022

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Abstract

Titanium alloy is a typical hard-to-machine metal and a lot of serrated chips are often formed in the cutting process. The appearance of serrated chips will not only cause the fluctuation of cutting force, resulting in the decline of cutting accuracy, but also lead to the rapid wear of tools. In this study, the formation mechanism of serrated chip of Ti-6Al-4V titanium alloy was investigated by a two-dimensional cutting simulation model of Ti-6Al-4V titanium alloy, which was established by using the Johnson–Cook constitutive model and Johnson–Cook fracture model. It is found that shear slip occurs with the decrease of the shear band and the overall stress during the formation of serrated chips. The peak temperature is reached at the end of the shear band. Meanwhile, the “dead zone” of temperature and stress is formed near the edge of the tool, which has an obvious periodic alternating trend in the cutting process, resulting in the macro curl and micro serration of chips.

Graphical abstract

The stress and temperature of the “dead zone” have an alternating trend with that of the shear band.
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Metadata
Title
Study on formation mechanism of serrated chip of Ti-6Al-4V titanium alloy based on shear slip theory
Authors
Xiaohua Zhu
Jiangmiao Shi
Yunhai Liu
Yuhong Jiang
Bowen Zhou
Xiao Zhao
Publication date
20-08-2022
Publisher
Springer London
Published in
The International Journal of Advanced Manufacturing Technology / Issue 3-4/2022
Print ISSN: 0268-3768
Electronic ISSN: 1433-3015
DOI
https://doi.org/10.1007/s00170-022-09958-8

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