Structural evaluation and mechanical properties of nanostructured Al/B4C composite fabricated by ARB process

An alternative method for manufacturing Al/B4C/SiC hybrid composite strips by cross accumulative roll bonding (CARB) process

“…2) shows that only Al, B4C and SiC phases were present in the composite and no additional peaks or intermetallic compounds were formed after CARB process. Alizadeh et al [17,22] have not observed any intermetallic compounds in Al/B4C and Al/SiC composite that was produced via ARB either. During casting of Al/B4C and Al/SiC composite, the injection of B4C and SiC particles to pure aluminum resulted in formation of deleterious intermetallic compounds such as Al3BC and Al4C3 [23,24] which affected properties of composites.…”

“…The equivalent strain is increased by this shear deformation so that the grain refinement would be promoted. On the other hand, the B4C and SiC particles act as obstacles to the dislocation motion, thereby leading to the dislocation accumulation and to the formation of sub-grain and then grain boundaries [17,18,22,25]. The quality of bonding between the reinforcement and matrix and porosity are the other effective factors on MMCs properties.…”

Fabrication and characteristic of Al-based hybrid nanocomposite reinforced with WO3 and SiC by accumulative roll bonding process

“…Nevertheless, during deformation process, the matrixereinforcement interface is a good place for crack initiation and propagation. Therefore, as reinforcement nanoparticles distribution becomes more uniform in the matrix due to the increased cycle number, the distance between matrix/reinforcement interfaces increases, which postpones the cracks connection and improves nanocomposite elongation [42]. Another point is that particle distribution is another factor that is affecting the mechanical properties.…”

Synthesis and Characterization of In Situ Al-Al13Fe4-Al2O3-TiB2 Nanocomposite Powder by Mechanical Alloying and Subsequent Heat Treatment

“…[3] A wide range of potential reinforcements have been considered, including SiC, Al 2 O 3 , SnO 2 , B 4 C, ZrO 2 , and TiB 2 . [4][5][6][7][8][9] TiB 2 is compatible with aluminum matrix, and does not react with aluminum to form any reaction product at the interfaces of reinforcement and the matrix. [10][11][12] On the other hand, TiB 2 is a refractory compound with many attractive properties, including exceptional hardness (approximately 25-35 GPa at room temperature, about three times harder than fully hardened structural steels), which is retained up to high temperatures.…”