Backward extrusion of Al–Al3Ti functionally graded material: Volume fraction gradient and anisotropic orientation of Al3Ti platelets

Microstructures and corrosion properties of casting in situ Al3Ti-Al composites

“…5 presents the variations of mass loss per square centimeter of each material with corrosion time. The addition of Ti to form Al 3 Ti decreases the corrosion resistance of pure Al and its alloys, which is contrary to the proposal by Sequeira and Das [21][22]. It is also found that the corrosion resistance of the pure Al decreases as the Ti content increases (Fig.…”

“…Wang's study indicated that the Al 3 Ti morphology in pure Al matrix was in blocky form and it would change to flaky form when B element was added [9]. However, the other investigations, including the authors', showed that the Al 3 Ti reinforcements in pure Al matrix were frequently in flaky form [11][12][16][17][18][19][20]. Thus, the factors, especially some alloying elements which determine the morphologies of Al 3 Ti reinforcements, need to be further verified.…”

“…In some cases, only the surface of a component needs to be strengthened and thus a functionally graded composite is prepared on the component surface [14][15]. Watanabe et al intensively investigated the fabrication technique of centrifugal casting and the related microstructures and properties [11][12][16][17][18][19]. However, in most cases, components are required to be manufactured using materials with uniform microstructures.…”

“…Thus, the factors, especially some alloying elements which determine the morphologies of Al 3 Ti reinforcements, need to be further verified. In addition, some researchers suggested that the presence of Al 3 Ti dispersoids might result in an improvement in corrosion resistance of Al alloy products [21][22]. But they did not study the corrosion properties of this kind of composites.…”

3-Dimensional Microstructural Evaluation of Wear-Induced Layer in Al–Al₃Ti Functionally Graded Materials by Serial Sectioning

“…3,611) Moreover, the plane normal of the Al 3 Ti platelet particles was oriented parallel to the radial direction of the FGMs ring. 10,11) Figure 1 shows a schematic illustration of the AlAl 3 Ti FGMs ring, where the directions labeled WA, WB and WC indicate the sliding directions of the wear tests performed in previous studies. 6,8) When the outer surface of the AlAl 3 Ti FGMs ring was worn in the WA sliding direction with an S45C plate, a wearinduced layer with 100 µm in thickness was generated just below the worn surface for a sliding distance of 100 m and an initial applied stress of 0.5 MPa.…”