Abstract

SiC ceramic nanoparticles were incorporated into the A356 aluminum matrix with different compositions using a combination of stir casting and semisolid extrusion. The microstructure and mechanical properties of the produced nanocomposites were evaluated. The results showed that the presence of Nickel acts as an appropriate metallic carrier for SiC nanoparticles, which causes uniform dispersion and spherical grains. Consequently, the coexistence of SiC nanoparticles and Nickel resulted in UTS of above 304 MPa and elongation of 5.8%. However, the addition of Titanium caused the formation of flake-like intermetallics, which decreased the elongation of the nanocomposites. The method introduced in this study for the incorporation of SiC ceramic nanoparticles can be used as a promising process instead of conventional methods, which are expensive and time-consuming.

Graphic Abstract

摘要

通过搅拌铸造和半固态挤压的组合，将具有不同成分的SiC陶瓷纳米颗粒掺入A356铝基体中。评价了所生产的纳米复合材料的微观结构和力学性能。结果表明，镍的存在可作为SiC纳米颗粒的合适金属载体，从而导致均匀分散和球形晶粒。结果，SiC纳米颗粒和镍的共存导致UTS高于304 MPa，伸长率为5.8％。然而，钛的添加导致了片状金属间化合物的形成，这降低了纳米复合材料的伸长率。这项研究中介绍的用于掺入SiC陶瓷纳米颗粒的方法可以代替传统方法，作为有前途的方法，

图形摘要