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Experimental study on chip deformation of Ti-6Al-4V titanium alloy in cryogenic cutting

  • Wei Zhao
  • Le Gong
  • Fei Ren
  • Liang Li
  • Qing Xu
  • Aqib Mashood Khan
Open Access
ORIGINAL ARTICLE
  • 311 Downloads

Abstract

This paper first develops a cryogenic cutting system with adjustable jet temperature (− 196~20 °C), and then carries out a series of dry cutting and cryogenic turning experiments for titanium alloy. Metallographic microscope is used to observe the chip morphology of titanium alloy and the geometric characteristic parameters of the chip are measured using a Digimizer image measurement software. The influence of cutting speed and cooling conditions on the chip morphology, chip height ratio, and serrated pitch has been analyzed. The experimental results reveal that the cutting speed and cooling conditions play significant roles on the chip morphology and serrated characteristics of titanium alloy. During the cryogenic cutting process, with the increase of cutting speed, the chip height ratio and serrated pitch of titanium alloy chip increase. It has been found that under the condition of cryogenic cutting, the lower jet temperature, the more obvious serrated characteristic of titanium alloy chip. It is also found that the fibrous adiabatic shear band exists in the shear zone; the chip height ratio and serrated pitch remarkably increase.

Keywords

Titanium alloy Cryogenic cutting Chip morphology Chip height ratio Serrated pitch 

Notes

Funding

This research is financially supported by the National Natural Science Foundation of China under the contract no. 51475234 and General Assembly Project under the contract no. 9140A18030115HT90052.

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Copyright information

© The Author(s) 2018

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  1. 1.College of Mechanical and Electrical EngineeringNanjing University of Aeronautics and AstronauticsNanjingChina
  2. 2.Shanghai Aerospace Equipment Manufacturing General FactoryShanghaiChina

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