Wear Properties on AA2014/Al 2 O 3 /TiB 2 Hybrid Metal Matrix …
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AA2014 alloy/5% Al 2 O 3 /5% TiB 2 . Uniaxial pressure was used to process the green
compacts at room temperature and 350 MPa of compaction pressure.
Sintering conducted in the vacuum hot press at 620 °C for 2 h. Sample will
continue to be cooled for 24 h in nitrogen. The diameter and height of the specimen
is 20/20 mm.
Green compacts of composites were sintered under the nitrogen atmosphere at
620 °C for 2 h. Sample-I and sample-II sintered and green densities were estimated
by weight and physical dimensions. Theoretical densities of the composition were
calculated by rule of mixture.
The ASTM G99-05-based pin-on-disc (EN31) discs analyze specimen’s dry
sliding wear property. Tests conducted of 20 N applied load, at 1000 m sliding
distance and 1.5 m/s sliding speed. Before and after testing, the specimen was
weighed, and subsequently, SEM images of worn-out surfaces are analyzed.
3 Results and Discussion
3.1 Studies on Microstructure
A prefilled in the scanning electron microscopy, the polished sample images are
captured. Figure 1 displays 25-µm-scale microstructure of AA2014. The image
shows aluminium, copper, chromium and manganese evenly distributed in layer
of aluminium.
Figure 2 displays the 25-µm-scale microstructure of hybrid metal matrix
composite. The image shows a uniform distribution of aluminium, copper, titanium,
boron, chromium and manganese in the hybrid metal matrix composite.
Fig. 1 Microstructure of
AA2014 alloy
391
AA2014 alloy/5% Al 2 O 3 /5% TiB 2 . Uniaxial pressure was used to process the green
compacts at room temperature and 350 MPa of compaction pressure.
Sintering conducted in the vacuum hot press at 620 °C for 2 h. Sample will
continue to be cooled for 24 h in nitrogen. The diameter and height of the specimen
is 20/20 mm.
Green compacts of composites were sintered under the nitrogen atmosphere at
620 °C for 2 h. Sample-I and sample-II sintered and green densities were estimated
by weight and physical dimensions. Theoretical densities of the composition were
calculated by rule of mixture.
The ASTM G99-05-based pin-on-disc (EN31) discs analyze specimen’s dry
sliding wear property. Tests conducted of 20 N applied load, at 1000 m sliding
distance and 1.5 m/s sliding speed. Before and after testing, the specimen was
weighed, and subsequently, SEM images of worn-out surfaces are analyzed.
3 Results and Discussion
3.1 Studies on Microstructure
A prefilled in the scanning electron microscopy, the polished sample images are
captured. Figure 1 displays 25-µm-scale microstructure of AA2014. The image
shows aluminium, copper, chromium and manganese evenly distributed in layer
of aluminium.
Figure 2 displays the 25-µm-scale microstructure of hybrid metal matrix
composite. The image shows a uniform distribution of aluminium, copper, titanium,
boron, chromium and manganese in the hybrid metal matrix composite.
Fig. 1 Microstructure of
AA2014 alloy