Surface integrity of Inconel 718 during drilling operation

Superalloys such as Inconel 718 have high strength at elevated temperatures, which make them attractive towards various applications in aerospace industry. However, these materials are considered difficult to machine materials. The state of a workpiece surface after machining is definitely affected...

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Bibliographic Details
Main Author:	Farid, Ali Akhavan
Format:	Thesis
Language:	English
Published:	2008
Subjects:	TJ Mechanical engineering and machinery TS Manufactures
Online Access:	http://eprints.utm.my/id/eprint/12188/1/AliAkhavanFaridMFKM2008.pdf
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id	my-utm-ep.12188
record_format	uketd_dc
spelling	my-utm-ep.121882018-07-23T05:45:36Z Surface integrity of Inconel 718 during drilling operation 2008-05 Farid, Ali Akhavan TJ Mechanical engineering and machinery TS Manufactures Superalloys such as Inconel 718 have high strength at elevated temperatures, which make them attractive towards various applications in aerospace industry. However, these materials are considered difficult to machine materials. The state of a workpiece surface after machining is definitely affected by cutting parameters, such as cutting speed, feed rates, drill types and drill geometries. Drilling tests, at different spindle-speed, feed rates, drills and point angles of drill, were conducted in order to investigate the effect of the above parameters on the quality of machined holes and surface integrity of Inconel 718. The quality of machined holes was evaluated in terms of the geometrical accuracy and burr formation. Surface integrity involved the aspect of surface roughness, metallurgical alterations and microhardness of the substrate of the hole surface. High hole quality was observed even at holes produced using worn tools, in relation to dimensions, surface roughness and burr height. However, microhardness measurements and microstructural analysis of work-piece showed significant microstructural changes related with a loss of mechanical properties. In general the cutting parameters have significant effects on the surface quality and surface integrity when drilling Inconel 718 using uncoated carbide drill. 2008-05 Thesis http://eprints.utm.my/id/eprint/12188/ http://eprints.utm.my/id/eprint/12188/1/AliAkhavanFaridMFKM2008.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TJ Mechanical engineering and machinery TS Manufactures
spellingShingle	TJ Mechanical engineering and machinery TS Manufactures Farid, Ali Akhavan Surface integrity of Inconel 718 during drilling operation
description	Superalloys such as Inconel 718 have high strength at elevated temperatures, which make them attractive towards various applications in aerospace industry. However, these materials are considered difficult to machine materials. The state of a workpiece surface after machining is definitely affected by cutting parameters, such as cutting speed, feed rates, drill types and drill geometries. Drilling tests, at different spindle-speed, feed rates, drills and point angles of drill, were conducted in order to investigate the effect of the above parameters on the quality of machined holes and surface integrity of Inconel 718. The quality of machined holes was evaluated in terms of the geometrical accuracy and burr formation. Surface integrity involved the aspect of surface roughness, metallurgical alterations and microhardness of the substrate of the hole surface. High hole quality was observed even at holes produced using worn tools, in relation to dimensions, surface roughness and burr height. However, microhardness measurements and microstructural analysis of work-piece showed significant microstructural changes related with a loss of mechanical properties. In general the cutting parameters have significant effects on the surface quality and surface integrity when drilling Inconel 718 using uncoated carbide drill.
format	Thesis
qualification_level	Master's degree
author	Farid, Ali Akhavan
author_facet	Farid, Ali Akhavan
author_sort	Farid, Ali Akhavan
title	Surface integrity of Inconel 718 during drilling operation
title_short	Surface integrity of Inconel 718 during drilling operation
title_full	Surface integrity of Inconel 718 during drilling operation
title_fullStr	Surface integrity of Inconel 718 during drilling operation
title_full_unstemmed	Surface integrity of Inconel 718 during drilling operation
title_sort	surface integrity of inconel 718 during drilling operation
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2008
url	http://eprints.utm.my/id/eprint/12188/1/AliAkhavanFaridMFKM2008.pdf
_version_	1747814903473766400

Surface integrity of Inconel 718 during drilling operation

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