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and again stirring was introduced. This procedure was continued until the melt became semi-solid. Then, the temperature was again raised beyond the melting temperature and the molten charge was poured... by heating them to a solid solution temperature of 500 °C and quenched to room temperature by water. Next, each solutionized sample was cut into ten pieces and then placed in a furnace until the furnace......
, impact speed at textured parts on wheel and spread semi-solid powders. The microstructures of the produced ribbons with different thicknesses were given in Figs. 7(a) and (b). As could be seen from... the structure to nanocrystals and nanoparticles [9-12]. Rapid solidification method is particularly attractive for aluminum alloys because solid solubility of alloying elements is limited and can......
, and inhibiting the shear bands formation. DENG et al [15] studied the closed-die forging of AZ91 reinforced with 10 vol.% SiC particles (average size of 10 μm). The composites were manufactured by two-step semi-solid stir casting method. After T4 heat treatment, the composites and alloys were forged at 420 °C with 40%-80% height reduction. The results showed that the presence of the ceramic reinforcing phase......
in hypereutectic Al-Si alloy during directional solidification [J]. Journal of Alloys and Compounds, 2017, 722: 108-115. [25] SHABESTARI S G, PARSHIZFARD E. Effect of semi-solid forming... on the surface of the microsilica particles, preventing effective interaction at the interface of the liquid and solid phases. (3) Presence of (40-50) vol.% of air in the powder, reducing its density......
of semi-solid stirring and ultrasonic vibration was successfully applied to fabricating a TiCp/Mg-4Zn- 0.5Ca nanocomposite [5,24]. After single extrusion, excellent mechanical properties (yield strength......
and wear behaviour of semi-solid cast A390 alloy reinforced with Al2O3 and TiO2 nanoparticles [J]. Arabian Journal for Science and Engineering, 2014, 39: 5171-5184. [25] EL-MAHALLAWI I, SHASH Y, AMER... nano-SiO2 addition to the melt [J]. Materials and Technology, 2017, 51: 945-951. [12] GHAHREMANIAN M, NIROUMAND B. Compocasting of an Al-Si-SiCp composite using powder injection method [J]. Solid......
. In addition, the agglomerated GNPs can cause the easy sliding between the GNP-GNP and Al-GNP-Al grains due to solid lubricant property of GNPs. Therefore, as the graphene aggregates, its role will change from a reinforcing element to a solid lubricating material gradually, which has a negative effect on the mechanical behavior of composites. Fig. 16 Increment of yield strength contributed......
: 503-508. DOI: 10.4028/www. scientific.net/AMR.486.503. [41] CHEN L, ZHAO Y, YAN F, HOU H. Statistical investigations of serpentine channel pouring process parameters on semi-solid ZL101 aluminum......
a higher carbon capture ability than vanadium, and the segregation of trace niobium at defects can effectively pin dislocations. In detail, the formation of the Nb-Cottrell atmosphere and the solid... size of primary MC carbides can be refined, the solid solution of vanadium in the matrix was increased, thus the secondary hardening ability can be strengthened [15, 22]. However, the results above......
-ze. ZHANG Ying. High temperature deformation behavior and microstructure evolution of wrought nickel-based superalloy GH4037 in solid and semi-solid states [J]. Transactions of Nonferrous Metals..., 2011, 44: 27-35. [10] MATIJASEVIC G S, LEE C C, WANG C Y. Au-Sn alloy phase diagram and properties related to its use as a bonding medium [J]. Thin Solid Films, 1993, 223: 276-287. [11] LIU Sheng-fa......
