Wear behavior and mechanical properties of al-based FGM
The wear and mechanical properties of Aluminium, Al LM6 and Al/SiC Functionally Graded Material (FGM) which are produced by using horizontal centrifugal casting method have been studied. Two casting parameters with three different level are selected to produce the hollow cylinder namely pouring t...
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2021
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/6477/1/24p%20MAXIMUS%20KOHNIZIO%20MAHLI.pdf http://eprints.uthm.edu.my/6477/2/MAXIMUS%20KOHNIZIO%20MAHLI%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/6477/3/MAXIMUS%20KOHNIZIO%20MAHLI%20WATERMARK.pdf |
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| Summary: | The wear and mechanical properties of Aluminium, Al LM6 and Al/SiC Functionally
Graded Material (FGM) which are produced by using horizontal centrifugal casting
method have been studied. Two casting parameters with three different level are selected
to produce the hollow cylinder namely pouring temperature (690, 710 and 725°C) and
motor speed (1300, 1500 and 1700rpm). Taguchi method is used in the analysis to screen
all the variables that have significant effects on the wear rate and mechanical properties
of Al-based FGM. Furthermore, the optimization of Response Surface Methodology
(RSM) is utilized to acquire a model that predict the optimum process parameter. The
result indicates that the influencing parameter are load and type of material, and the best
wear samples for this level of parameters are Al/SiC with pouring temperature of 725°C,
motor speed of 1500 rpm, load of 10 N and sliding velocity of 1 m/s. Meanwhile, types of
material are the most influencing parameter for hardness and strength analysis. Graded
properties of Al-based FGM are observed from inner towards the outer periphery of the
sample. The size of Si is bigger and concentrated at the inner periphery while SiC particles
segregate towards the outer periphery due to its high density compared with Aluminium.
Results revealed that all composites casted have the best hardness, strength and wear
resistance at the outer periphery of the hollow cylinder. |
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