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Investigating chip morphology and its characteristics in the high-speed milling of a Ti-6Al-4V thin plate

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Abstract

Titanium alloy thin-plates have been widely used in the aerospace, automotive and biomedical industries, to name a few. The chip morphologies and material properties of the thin plate were investigated under different cutting parameters in this paper. First, to further understand the variability and inherent rules of chip morphology, the characteristics of multi-surface chips (free, back, and cross-section surfaces) were observed and studied by using a scanning electron microscope. The sawtooth frequency and degree of segmentation were analyzed through the geometrical characteristics of a serrated chip. Second, variations in the chip microhardness and the wear of the mill cutter were measured and investigated under different machining parameters. Results show that the hardenability increases with the increase in cutting speed and the shear band shows higher microhardness than in other parts. In addition, the degree of insert wear decreases with proper cutting speed and feed. Some key conclusions and future work about high-speed milling thin-plate Ti-6Al-4V are given.

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Authors and Affiliations

  1. School of Mechanical Engineering and Automation, Northeastern University, Shenyang, 110819, China

    Lida Zhu, Zhaobin Li & Changfu Liu

  2. Research and Develop Center, CSR Qingdao Sifang Co., Ltd., Qingdao, 266111, China

    Jijiang Wu

Authors
  1. Lida Zhu
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  2. Jijiang Wu
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  3. Zhaobin Li
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  4. Changfu Liu
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Corresponding author

Correspondence to Lida Zhu.

Additional information

Recommended by Associate Editor Jihong Hwang

Lida Zhu received his Bachelor’s degree in Mechanical Engineering from Hefei University of Technology in 2003. He received his Master’s and Ph.D. degrees in Mechanical Manufacturing and Automation from Northeastern University, China, in 2007 and 2010, respectively. Since 2012, he has been serving as an associate professor at Northeastern University. His research interests include high-speed turn-milling technology and chatter stability of thin-wall.

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Zhu, L., Wu, J., Li, Z. et al. Investigating chip morphology and its characteristics in the high-speed milling of a Ti-6Al-4V thin plate. J Mech Sci Technol 29, 4359–4366 (2015). https://doi.org/10.1007/s12206-015-0934-z

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  • DOI: https://doi.org/10.1007/s12206-015-0934-z

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