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Friction drilling of difficult-to-machine materials: workpiece microstrutural alterations and tool wear


Dehghan, Shayan and Ismail, Mohd Idris Shah and Mohd Ariffin, Mohd Khairol Anuar and Baharudin, B. T. Hang Tuah (2019) Friction drilling of difficult-to-machine materials: workpiece microstrutural alterations and tool wear. Metals, 9 (9). art. no. 945. pp. 1-14. ISSN 2075-4701


Difficult-to-machine materials are metals that have great toughness, high work-hardening, and low thermal conductivity. Friction drilling of difficult-to-machine materials is a technically challenging task due to the difficulty of friction drilling, leading to excessive tool wear, which adversely affects surface integrity and product performance. In the present study, the microstructural changes of workpieces and tool wear for friction drilling of AISI304, Ti-6Al-4V, and Inconel718 are characterized. It helps to have an in-depth understanding of heat generation mechanics by friction and the mechanism of the friction drilling process. The study contributes to providing an enhanced microstructural characterization of workpiece and tool conditions, which identifies the material behavior and shows how it affects the bushing formation quality and drilling tool performance. The results reveal that the abrasive wear is mostly observed in the conical region of the tool, which has maximum contact with hole-wall. Moreover, the low thermal conductivity of Ti-6Al-4V increases frictional heat generation severely, and reduces product quality and tool life subsequently.

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Official URL or Download Paper: https://www.mdpi.com/2075-4701/9/9/945

Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.3390/met9090945
Publisher: MDPI AG
Keywords: Friction drilling; Microstructure; Tool wear; Difficult-to-machine materials; AISI304; Ti-6Al-4V; Inconel718
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 13 Apr 2023 00:53
Last Modified: 13 Apr 2023 00:53
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/met9090945
URI: http://psasir.upm.edu.my/id/eprint/79954
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