Sub-surface analysis when finish turning inconel 718 high speed machining with minimum quantity lubrication (MQL)

M. Z A Yazid, M. S. Kassim, Che Hassan Che Haron, Jaharah A Ghani

Research output: Contribution to journalArticle

Abstract

The Minimum Quantity Lubrication (MQL) is an environmental friendly lubrication method in metal cutting industries where a very small amount of vegetable oil or biodegradable synthetic ester is sprayed close onto the cutting edge with compressed air. When employed, the usage of the dangerous cutting fluid may possibly be eliminated. This study reports sub-surface analysis of Inconel 718 when finish turning with coated carbide tool TiAlN (PVD) under high speed machining with MQL and dry cutting conditions. The microstructure analysis on the machined surface suggests that plastic deformation has taken place, leading to severe deformed layers of microstructure alteration at the subsurface level. Work hardening under the machined surface was evident from the micro-hardness measurements where higher hardness was measured near the surface and decreases to the bulk material hardness value deep into the subsurface. The results of the experimental study show that machining process and tool wear conditions influence the severity of the deformed layer and micro-hardness value.

Original languageEnglish
Pages (from-to)223-233
Number of pages11
JournalAsian Journal of Scientific Research
Volume9
Issue number5
DOIs
Publication statusPublished - 2016

Fingerprint

Surface analysis
Lubrication
Machining
Microhardness
Hardness
Cutting fluids
Carbide tools
Microstructure
Metal cutting
Vegetable oils
Compressed air
Physical vapor deposition
Strain hardening
Plastic deformation
Esters
Wear of materials
Industry

Keywords

  • Biodegradable synthetic ester
  • Carbide tool TiAIN
  • Micro-hardness
  • MQL

ASJC Scopus subject areas

  • General

Cite this

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abstract = "The Minimum Quantity Lubrication (MQL) is an environmental friendly lubrication method in metal cutting industries where a very small amount of vegetable oil or biodegradable synthetic ester is sprayed close onto the cutting edge with compressed air. When employed, the usage of the dangerous cutting fluid may possibly be eliminated. This study reports sub-surface analysis of Inconel 718 when finish turning with coated carbide tool TiAlN (PVD) under high speed machining with MQL and dry cutting conditions. The microstructure analysis on the machined surface suggests that plastic deformation has taken place, leading to severe deformed layers of microstructure alteration at the subsurface level. Work hardening under the machined surface was evident from the micro-hardness measurements where higher hardness was measured near the surface and decreases to the bulk material hardness value deep into the subsurface. The results of the experimental study show that machining process and tool wear conditions influence the severity of the deformed layer and micro-hardness value.",
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AU - Kassim, M. S.

AU - Che Haron, Che Hassan

AU - A Ghani, Jaharah

PY - 2016

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