Study The Effect of Rotational Speed and Pouring Temperature on the Distribution of Si in Functionally Graded Material Produced by Centrifugal Casting

Abdul-Latiff, Nawal Ezzat; Yaseen, Rabiha S.; Jomah, Abdul-jabbar Saad

doi:10.30684/etj.32.2a.20

Cited by 3 publications

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“…Saad, [6] used a horizontal centrifugal casting method to make a functionally graded material (FGM) and analyzed the effect of the rotation speed of casting mold and overheating temperature on the microstructure and hardness of a hypereutectic (Al-23%Si) alloy. The results showed that the overheating temperature and mold rotation speed affect the grain size and volume fraction of (β-Si) phase, increasing the overheating temperature due to the increasing average volume fraction and decreasing the grain size of primary silicon, but increasing mold rotation speed due to increasing the volume fraction in the inner layer of cylinder thickness and decreasing in the outer layer, also decreasing the grain size of primary silicon.…”

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Mechanical Characteristics of Prepared Functionally Graded Cylinder by Centrifugal Casting

Ataiwi¹,

Atiyah²,

Madhloom³

2014

ETJ

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It is hoped in this paper to use the concept of centrifuging to prepare thick hollow functionally graded cylinder of (Al-TiO 2 ) alloy. In order to achieve this objective, a vertical centrifugal casting machine was designed and manufactured. The FG cylinders prepared have shown a reasonable linear and the graded hardness value across the thicknesses. FG cylinders exhibit a heterogeneous microstructure in which a high volume fraction of (TiO2) hard particles is clustered on the surface according to the value of pouring temperature and motor force that represented by the mold number of rotations per minutes. It was found that using of pouring temperature of (850˚C) and rotation speed of (2100 r.p.m) would make a better graded hardness value across the thickness especially when (TiO2 weight%) is (10%). It is also found that the clustering of (TiOR 2 R) will weaken the tensile strength of prepared materials but increasing the wear resistance. Results of X-ray diffraction analysis for cylinders prepared with pouring temperature conditions (850˚C) and rotation speed of (2100 r.p.m)shows the development of (TiAl) crystalline phase in all prepared FG cylinders and maximum noticeable intensity was foundin (7.5weight% of TiOR 2 R) FG cylinders.

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confidence: 99%

Mechanical Characteristics of Prepared Functionally Graded Cylinder by Centrifugal Casting

Ataiwi¹,

Atiyah²,

Madhloom³

2014

ETJ

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The effect of elevated temperature on the properties of Al/Zn functionally gradient materials composites

Ziadoon,

Al-Khazraji,

Shandookh

2023

Proceedings of the 2022 4th International Conference on Sustainable Manufacturing, Materials and Technologies

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Mechanical properties investigation of composite FGM fabricated from Al/Zn

2022

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This article investigates the novel mechanical behavior of metal–metal gradients (Al/Zn) of the functionally graded materials (FGM) type. The experimental work includes the manufacture of three different models (FGM 1, FGM 2, and FGM 3) with various proportions of volume fraction and gradation as (100% Al–50% Al–50% Zn–50% Zn–50% Al–100% Zn), (100% Al–30% Zn–70% Al–70% Zn–30% Al–100% Zn) and (100% Al–70% Zn–30% Al–30% Zn–70% Al–100% Zn), respectively. The annealing process was carried out to eliminate the casting problems of the FGM. Mechanical tests such as tensile and hardness were performed using different parameters of the gradient of properties for each model. Hardness tests for each model were carried out by the circumferential method along the rod made of the FGM and in the radial direction from the core of the models and at different distances. In the third model, the modulus of elasticity and ultimate strength were 79 and 377 MPa, respectively. The densities of the three models were measured experimentally and theoretically. The results show that model FGM 3 has a tensile strength of 6, which is 10% more than that of models FGM 1 and FGM 2. The results showed a significant improvement of 22% in the tensile strength on average compared to the aluminum–zinc alloy. The circumferential method of hardness testing gives variant results than the radial type due to the properties of FGMs.

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Study The Effect of Rotational Speed and Pouring Temperature on the Distribution of Si in Functionally Graded Material Produced by Centrifugal Casting

Cited by 3 publications

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Mechanical Characteristics of Prepared Functionally Graded Cylinder by Centrifugal Casting

Mechanical Characteristics of Prepared Functionally Graded Cylinder by Centrifugal Casting

The effect of elevated temperature on the properties of Al/Zn functionally gradient materials composites

Mechanical properties investigation of composite FGM fabricated from Al/Zn

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