Effect of tool microstructure on machining of titanium alloy TC21 based on simulation and experiment
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ORIGINAL ARTICLE
Effect of tool microstructure on machining of titanium alloy TC21 based on simulation and experiment Xiaohua Qian 1,2 & Xiongying Duan 1 Received: 25 April 2020 / Accepted: 13 October 2020 # Springer-Verlag London Ltd., part of Springer Nature 2020
Abstract Titanium alloys have high corrosion resistance and specific strength, leading to a wide range of uses in a variety of industrial fields. However, machining performance is often very poor, causing serious difficulty during the cutting process. In particular, high cutting temperature and high chemical activity of titanium alloys during the cutting process lead to rapid tool wear. Within this research, specific tool microstructures cut onto the tool rake surface is explored to improve the cutting performance of titanium alloy TC21. In order to isolate the influence of particular tool microstructures on the cutting performance of titanium alloy TC21, a 3D orthogonal finite element model (OFEM) is utilized to simulate the cutting process of TC21 alloy. The impact of tool microstructure on chip formation, cutting force and temperature is thoroughly analyzed through turning simulations and experiments on titanium alloy TC21. Finally, a comprehensive comparison of cutting behaviors between textured and untextured tools during the cutting of titanium alloy TC21 was carried out. Cutting simulations indicate that tool microstructure can improve the cutting properties, reducing cutting temperature and cutting force. Research results confirm that chip serration and tool wear noticeably decreased, indicating tool texture can significantly improve cutting performance of titanium alloy TC21. Keywords Titanium alloy . Tool texture . Numerical simulation . Chip formation . Tool wear
1 Introduction As a very excellent metal alloy, titanium alloy has high specific strength, biocompatibility, and high corrosion resistance [1, 2]. Although the performance of titanium alloy is excellent, titanium alloys are notably harder to cut when compared with similar alloys [3–5].Many defects such as rapid tool wear and poor cutting quality during the cutting process of titanium alloy exist. In order to solve these problems in the cutting process, many solutions to improve the machinability of titanium alloy to prolong tool life and improve cutting quality have been proposed [6–16]. Jawaid et al. [6] focused on the effect of various grain sizes and chip-breakers on tools during the cutting of Ti6Al4V alloy, and it was confirmed that a fine grain size and honed edge can greatly prolong tool life. * Xiongying Duan [email protected] 1
Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, China
2
College of Mechanical and Energy Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China
Venugopal et al. [7] compared the difference of dry, wet, and cryogenically cooled environments on tool life and wear using uncoated carbide tools during the cutting of titanium alloy. Hong et
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