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6CCVD Research

Performance analysis of Nano Engineered Diamond coated tools for machining of AA2124/SiCp composite material

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2018-01-01
JournalProcedia Manufacturing
AuthorsKartik Ramasubramanian, N. Arunachalam, M. S. Ramachandra Rao
InstitutionsIndian Institute of Technology Madras
Citations5

Abstract

Section titled ā€œAbstractā€

Aluminum based metal matrix composites (Al-SiC) are widely used in automotive and aerospace industries due to its high strength to weight ratio, high wear resistance, and higher thermal conductivity. Though it has lots of commercial applications, machining of this MMC still a challenging task due to its hard SiC reinforcement in the soft aluminum material. These two phases cause adhesive and abrasive wear on the cutting tool. Hence tooling with a property of combined hardness and toughness required to machine this material effectively. In this connection, CVD diamond on WC-Co is considered as the suitable cutting tool for the precise machining of this MMC material. Even though it is commercially available, the usage is limited due to the poor interfacial adhesion of CVD diamond on WC-Co leads to coating delamination. In this work, the boron doped diamond (BDD) and boron doped graded layer diamond coating (BMTN) on WC-Co were considered. Machining experiments were conducted on a lathe using AA2124/SiCp MMC material to evaluate the wear performance of the BMTN, BDD, MCD (Microcrystalline diamond coating) and NCD (Nanocrystalline diamond coating) coated cutting inserts. The tool wear results indicate that the BMTN outperformed in comparison with MCD and NCD coated tool inserts.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
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  2. 1992 - Machinability of Particulate Aluminium Matrix Composites [Crossref]
  3. 2004 - CBN cutting tool wear during machining of particulate reinforced MMCs [Crossref]
  4. 2002 - Diamond tool performance in machining metal-matrix composites [Crossref]
  5. 2005 - CVD diamond tool performance in metal matrix composite machining [Crossref]
  6. 2008 - Machinability issues in turning of Al-SiC (10p) metal matrix composites [Crossref]
  7. 2013 - Machining Of MMCs: A REVIEW [Crossref]
  8. 2009 - CVD diamond coatings on geometrically complex cutting tools [Crossref]
  9. 2017 - Improvement of coating adhesion on cemented carbide tools by plasma etching [Crossref]

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