Title

HIGH DURABILITY OF CUTTING EDGES MADE OF NANOCRYSTALLINE CEMENTED CARBIDES SINTERED BY THE PULSE PLASMA METHOD

HIGH DURABILITY OF CUTTING EDGES MADE OF NANOCRYSTALLINE CEMENTED CARBIDES SINTERED BY THE PULSE PLASMA METHOD

Authorship

MICHALSKI, ANDRZEJ; SIWAK, PIOTR; ROSINSKI, MARCIN; KUPCZYK, MACIEJ JAN

MICHALSKI, ANDRZEJ

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SIWAK, PIOTR

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ROSINSKI, MARCIN

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KUPCZYK, MACIEJ JAN

I am this author

DOI

10.5151/2594-5327-16940

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Abstract

In our investigations, nanocrystalline WC-5 wt.% Co was consolidated by the pulse plasma sintering (PPS) method at various temperatures between 1320 and 1560 K under a pressure of 60 MPa for 300 s. The cemented carbides sintered at 1520 K have a relative density of 100%, hardness of 2100 HV30 and WC crystallite size of about 80-120 nm. An increase of the sintering temperature to 1570 K results in the increase of the WC crystallite size to about 150-350 nm and the hardness being decreased to 1980 HV30. Tool life of the cutting edges made of nanocrystalline cemented carbides sintered by the pulse plasma method is increased about two times in comparison with cutting edges made of the standard and fine-grained cemented carbides during turning the EN1.45.40 (1H18N9T) austenitic steel.

In our investigations, nanocrystalline WC-5 wt.% Co was consolidated by the pulse plasma sintering (PPS) method at various temperatures between 1320 and 1560 K under a pressure of 60 MPa for 300 s. The cemented carbides sintered at 1520 K have a relative density of 100%, hardness of 2100 HV30 and WC crystallite size of about 80-120 nm. An increase of the sintering temperature to 1570 K results in the increase of the WC crystallite size to about 150-350 nm and the hardness being decreased to 1980 HV30. Tool life of the cutting edges made of nanocrystalline cemented carbides sintered by the pulse plasma method is increased about two times in comparison with cutting edges made of the standard and fine-grained cemented carbides during turning the EN1.45.40 (1H18N9T) austenitic steel.

Keywords

Nanomaterials; Cutting edges; Pulse plasma sintering method.

Nanomaterials; Cutting edges; Pulse plasma sintering method.