Microstructures and wear resistances of hybrid Al–(Al3Ti+Al3Ni) FGMs fabricated by a centrifugal method

Watanabe, Yoshihiko; Nakamura, Terumi

doi:10.1016/s0966-9795(00)00086-8

Cited by 55 publications

(27 citation statements)

References 17 publications

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“…Consequently, the hardness and wear resistance of Al based FGM ring fabricated by the centrifugal method increase towards the ring's outer region. 12,13) When the inner region of the ring is required to have high mechanical properties, the density of reinforcement particles should have a smaller value compared to that of the molten Al. However, the above systems are limited, and the mechanical properties of the lighter particlereinforced FGM would not be strong.…”

Section: Introductionmentioning

confidence: 99%

Density and Hardness Gradients of Functionally Graded Material Ring Fabricated from Al-3 mass%Cu Alloy by a Centrifugal <I>In-Situ</I> Method

Watanabe

Sato

Ogawa³

et al. 2007

Mater. Trans.

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In present study, the Al-Al 2 Cu functionally graded material (FGM) ring was fabricated from Al-3 mass%Cu initial master alloy by the centrifugal in-situ method. In the case of Al-3 mass%Cu alloy, the density of the primary -Al crystal is larger than that of the molten Al alloy. Therefore, the solid -Al phase migrates towards the outer periphery of the ring when the centrifugal force is applied in the early stage of solidification. Consequently, since the Cu concentration within the FGM ring monolithically increases towards the ring's inner position, the FGM ring, whose density increases toward inner region, can be successfully fabricated by the centrifugal in-situ method from dilute Al-Cu alloy. It is also found that the hardness increases towards the inner region of the ring within the Al-Al 2 Cu FGM ring. The hardness of the fabricated specimens at the inner region of the ring increases in a large scale by the heat treatments, since Guinier-Preston (GP) zones would be formed by aging.

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Section: Introductionmentioning

confidence: 99%

Density and Hardness Gradients of Functionally Graded Material Ring Fabricated from Al-3 mass%Cu Alloy by a Centrifugal <I>In-Situ</I> Method

Watanabe

Sato

Ogawa³

et al. 2007

Mater. Trans.

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“…In general, steeper compositional gradient appears for the centrifugal solid-particle method, since the motion of the solid-particles under the centrifugal force is governed by the Stokes' law. 18) As mentioned above, judging from the binary phase diagrams shown in Figs. 1 and 2, Zn and Zr dissolve into the molten Mg alloy if the ZK60A alloy is heated to 680…”

Section: Discussionmentioning

confidence: 93%

Functionally Graded Material Fabricated by a Centrifugal Method from ZK60A Magnesium Alloy

et al. 2005

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Magnesium based functionally graded material (FGM) was fabricated by a centrifugal method from ZK60A (Mg-5.5 mass%Zn-0.6 mass%Zr) alloy. The applied G numbers are 40, 80 and 120, where the G number is the centrifugal force in unit of gravity. The specimen shape was cylindrical with 18 mm in length. Microstructures of the fabricated FGM specimens were observed using SEM. Energy dispersive Xray analysis was performed to study the chemical compositional gradients within the fabricated FGM specimens. It was found that concentration of Zr in the specimens increases toward the centrifugal force direction, while no or quite small chemical compositional gradient of MgZn 2 appears. A hardness change along the centrifugal force direction was also found. The graded structures are caused by the difference in the formation mechanisms of compositional gradient during the centrifugal method between Zr and Zn.

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“…These methods include powder metallurgy, centrifugal casting, laser cladding, chemical deposition, and others. [1][2][3][4] However, all these traditional techniques are relatively expensive or too complicated to be used in industrial production. Therefore, it is necessary to explore a novel method for the fabrication of FGMs.…”

Section: Introductionmentioning

confidence: 99%

In-Situ Fabrication of Bi/BiMn–BiMn–Mn Graded Materials by High Magnetic Field Gradients

Liu

Wang

et al. 2010

ISIJ Int.

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Microstructures and wear resistances of hybrid Al–(Al3Ti+Al3Ni) FGMs fabricated by a centrifugal method

Cited by 55 publications

References 17 publications

Density and Hardness Gradients of Functionally Graded Material Ring Fabricated from Al-3 mass%Cu Alloy by a Centrifugal <I>In-Situ</I> Method

Density and Hardness Gradients of Functionally Graded Material Ring Fabricated from Al-3 mass%Cu Alloy by a Centrifugal <I>In-Situ</I> Method

Functionally Graded Material Fabricated by a Centrifugal Method from ZK60A Magnesium Alloy

In-Situ Fabrication of Bi/BiMn–BiMn–Mn Graded Materials by High Magnetic Field Gradients

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