WEAR PERFORMANCE OF ALUMINA-ZIRCONIA, ALUMINA-ZIRCONIA-CHROMIA AND ALUMINA-ZIRCONIA-MAGNESIA IN MACHINING AISI 1045 STEEL
Cutting tools is very important in determining productivity in machining operation. Small changes in formulation of cutting tools could promotes different performance in tool life and wear mechanism. This study compares wear performance of Alumina-Zirconia (80-20 wt%), Alumina-Zirconia-Chromia...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Malaysian Tribology Society (Mytribos)
2022
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| Online Access: | http://eprints.utem.edu.my/id/eprint/27039/2/0108219062023.PDF http://eprints.utem.edu.my/id/eprint/27039/ https://jurnaltribologi.mytribos.org/ https://jurnaltribologi.mytribos.org/v32.html |
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| Summary: | Cutting tools is very important in determining
productivity in machining operation. Small changes in
formulation of cutting tools could promotes different
performance in tool life and wear mechanism. This study
compares wear performance of Alumina-Zirconia (80-20
wt%), Alumina-Zirconia-Chromia (80-20-0.6 wt%) and
Alumina-Zirconia-Magnesia (80-20-0.2 wt%) cutting
tools. The cutting tools were fabricated with powder
metallurgy process and machining trials were performed
with AISI 1045 at 250 m/min cutting speed, 0.125
mm/rev feed rate ad 0.5 mm depth of cut. The results
reveal that Alumina-Zirconia-Magnesia cutting tools can
last up to 298 s, which is 42% longer than AluminaZirconia-Chromia and 413% longer than AluminaZirconia. Both Alumina-Zirconia-Chromia and AluminaZirconia-Magnesia cutting tools exhibited nearly identical
wear mechanisms, with uniform flank wear at the tool
edge linked with lower friction and temperature when
engaged with workpiece material. For Alumina-Zirconia
cutting tool, wear mechanism dominated by severe
chipping and fracture. |
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