Effect of machining parameters in dry turning of AISI 304 steel using nc- AlTiN/Si3N4, TiAlN and TiN coated inserts

Nano-indentation experiments were conducted on nc - AlTiN/Si3N4, TiAlN, and TiN coated inserts to measure their hardness and modulus of elasticity. The nc - AlTiN/Si3N4 coatings exhibited a hardness of 35 GPa and a modulus of elasticity of 488.97 GPa, the highest among the coatings tested. Testing i...

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Bibliographic Details
Published in:Hyperfine interactions 2024-09, Vol.245 (1)
Main Authors: Prasad, Kaushik V, Pattanaik Ashutosh, Pati, Pravat Ranjan
Format: Article
Language:English
Subjects:
Austenitic stainless steels
Coatings
Cutting parameters
Cutting speed
Cutting wear
Dry machining
Feed rate
Hardness
Inserts
Modulus of elasticity
Nanoindentation
Optimization
Process parameters
Silicon nitride
Surface finish
Titanium nitride
Turning (machining)
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Summary:Nano-indentation experiments were conducted on nc - AlTiN/Si3N4, TiAlN, and TiN coated inserts to measure their hardness and modulus of elasticity. The nc - AlTiN/Si3N4 coatings exhibited a hardness of 35 GPa and a modulus of elasticity of 488.97 GPa, the highest among the coatings tested. Testing indicates that this coating demonstrates good performance by reducing flank wear and achieving an optimal surface finish of less than 2 μm, even in challenging dry cutting settings with cutting speed of 250 m/min, feed rate of 0.3 mm/rev, and depth of cut of 1 mm. It is concluded that high hardness and type of coating is critical factor in optimizing machining parameters. Energy Dispersive Spectrometry (EDS) mapping indicates that nc - AlTiN/Si3N4 has potential for future use in dry machining applications.
ISSN:0304-3843
1572-9540
DOI:10.1007/s10751-024-02111-9