Bending strength of an AlAl3Ni functionally graded material

Statistical analysis of the mechanical properties of composite materials

“…Three-point bending tests of 15 prismatic specimens of 10 × 10 × 55 mm 3 were carried out using a universal testing machine (INSTRON 8016) with a 5 kN load cell. The tests results (flexural strength) are shown in Table 5.…”

“…The Weibull statistic [1] has been widely used in the recent years to describe the statistical behaviour of the strength properties of many materials, such as advanced ceramics [2], metallic matrix composites [3], ceramic matrix composites [4], and polymeric matrix composites [5]. The Weibull distribution also describes the fatigue behaviour of materials and the scatter of the fracture toughness of steels in the ductile-brittle transition region, where failure occurs by cleavage [6,7].…”

Functionally graded Al–Al3Ni in situ intermetallic composites: Fabrication and microstructural characterization

“…The density of Al 3 Ni intermetallic compound (∼4 g/cm 3 ) is more than that of molten aluminum (2.369 g/cm 3 at 700 • C and 2.315 g/cm 3 at 900 • C) [10], and hence a composite having graded radial distribution of Al 3 Ni near the outer periphery of hollow cylinder casting can be formed by centrifugal casting. Limited work reported on Al-Al 3 Ni FGM too has concentrated only on its making, evaluation of Young's modulus [2], bending strength [11] and fatigue [12,13] and numerical analysis [14]. Fukui et al have observed that the Young's Modulus of Al-Al 3 Ni FGM formed from Al-20 wt%Ni varies from 81.5 to 100.8 GPa from inner to outer periphery depending on the volume fraction of Al 3 Ni phases [2].…”

Wear Properties of Intermetallic Compound Reinforced Functionally Graded Materials Fabricated by Centrifugal Solid-particle and In-Situ Methods

“…The first type is the centrifugal solid-particle method, in which the processing temperature is lower than the liquidus temperature of the master alloy, whereby the dispersed intermetallic particles are stable inside a liquid matrix (7)(8)(9)(10) . The other method is the centrifugal in-situ method (11)(12)(13)(14)(15)(16) , in which the processing is implemented under temperatures higher than the liquidus temperature of the master alloy. As a result, in the case of the centrifugal in-situ method, the centrifugal force is applied to a completely liquid phase and the intermetallic compound particles crystallize from the liquid phase directly during the casting process.…”