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

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 af...

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Main Authors: Dehghan, Shayan, Ismail, Mohd Idris Shah, Mohd Ariffin, Mohd Khairol Anuar, Baharudin, B. T. Hang Tuah
Format: Article
Published: MDPI AG 2019
Online Access:http://psasir.upm.edu.my/id/eprint/79954/
https://www.mdpi.com/2075-4701/9/9/945
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Institution: Universiti Putra Malaysia
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spelling my.upm.eprints.799542023-04-13T00:53:05Z http://psasir.upm.edu.my/id/eprint/79954/ Friction drilling of difficult-to-machine materials: workpiece microstrutural alterations and tool wear Dehghan, Shayan Ismail, Mohd Idris Shah Mohd Ariffin, Mohd Khairol Anuar Baharudin, B. T. Hang Tuah 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. MDPI AG 2019 Article PeerReviewed 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 https://www.mdpi.com/2075-4701/9/9/945 10.3390/met9090945
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description 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.
format Article
author Dehghan, Shayan
Ismail, Mohd Idris Shah
Mohd Ariffin, Mohd Khairol Anuar
Baharudin, B. T. Hang Tuah
spellingShingle Dehghan, Shayan
Ismail, Mohd Idris Shah
Mohd Ariffin, Mohd Khairol Anuar
Baharudin, B. T. Hang Tuah
Friction drilling of difficult-to-machine materials: workpiece microstrutural alterations and tool wear
author_facet Dehghan, Shayan
Ismail, Mohd Idris Shah
Mohd Ariffin, Mohd Khairol Anuar
Baharudin, B. T. Hang Tuah
author_sort Dehghan, Shayan
title Friction drilling of difficult-to-machine materials: workpiece microstrutural alterations and tool wear
title_short Friction drilling of difficult-to-machine materials: workpiece microstrutural alterations and tool wear
title_full Friction drilling of difficult-to-machine materials: workpiece microstrutural alterations and tool wear
title_fullStr Friction drilling of difficult-to-machine materials: workpiece microstrutural alterations and tool wear
title_full_unstemmed Friction drilling of difficult-to-machine materials: workpiece microstrutural alterations and tool wear
title_sort friction drilling of difficult-to-machine materials: workpiece microstrutural alterations and tool wear
publisher MDPI AG
publishDate 2019
url http://psasir.upm.edu.my/id/eprint/79954/
https://www.mdpi.com/2075-4701/9/9/945
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