Microstructure analysis and Hardness of Al C355.0 with step varying weight of Hematite particulate reinforcement
Laen...
Kuupäev
2023
Kättesaadav alates
Autorid
Rajesh, T.R.
Venkatanarayan, B.
Vutukuru, S.K.
Prabhakar Kammar, B.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
A detail study on the microstructure of engineered Al C355.0 metal matrix with step
varying weight of hematite particulate reinforcement from 0–12% in the step of 3% by using stir
casting method in the copper chills with and without water circulation is carried out in the present
work. It was earlier realized that copper chills increase the hardness of metal matrix compared to
its base alloy. The novelty lies in the circulation of water during solidification process so that a
stronger matrix reinforcement bonding, low cluster regions, grain reinfinement with minimum
porosity could be achieved. The maximum hematite particulate size was 150 μm. From the
Scanning Electron microscope, it is clear that there was good distribution of reinforcement in the
matrix but not exactly clear whether it is uniform or non-uniformly distributed. SEM and XRD
analysis results show the presence of hematite in the matrix. With increase in reinforcement the
hardness increased up to 9% of the reinforcement and then decreased. It is concluded that water
circulation on casted composites have good effect in improving the hardness of the Al C355.0 at
9% of hematite resulting to BHN 128 and without water circulation it was found to be BHN 124.
It is realized that water circulation improves the hardness of the composite for all the cases with
hematite as particulate reinforcement for Al C355.0.
Kirjeldus
Received: December 23rd, 2022 ; Accepted: July 17th, 2023 ; Published: October 16th, 2023 ; Correspondence: rajeshtrgcem@gmail.com
Märksõnad
copper chills, hematite, microstructure, water circulation, articles