Title: Research on surface integrity in graphene nanofluid MQL milling of TC21 alloy

Authors: Ming Li; Tianbiao Yu; Hongyu Li; Lin Yang; Jiashun Shi; Wanshan Wang

Addresses: School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China ' School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China ' School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China ' School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China ' School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China ' School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China

Abstract: As a new type of damage-tolerance titanium alloy, TC21 alloy is widely used in aerospace. However, TC21 is a difficult-to-machine material owing to its low thermal conductivity, high chemical activity and low elasticity modulus. In this work, minimum quantity lubrication (MQL) with graphene nanofluid was adopted in TC21 milling. In order to evaluate the effects of graphene nanoparticle on the surface integrity, a series of milling experiments were performed under the dry, gas, pure MQL and graphene nanofluid MQL condition respectively. Results showed that the graphene additive was effective for improving the surface integrity. Overall, the results could be explained that graphene additive could enhance the cooling and lubrication performances of the oil film formed in cutting zone. The findings of this work are expected to give a feasibility and some experimental basis for the application of the graphene additive in MQL milling.

Keywords: graphene nanofluid; MQL milling; surface integrity; TC21.

DOI: 10.1504/IJAT.2019.097973

International Journal of Abrasive Technology, 2019 Vol.9 No.1, pp.49 - 59

Received: 16 May 2018
Accepted: 30 Aug 2018

Published online: 13 Feb 2019 *

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