Room temperature mechanical properties and tensile creep behavior of powder metallurgy processed and hot rolled Al and Al–SiCp composites

Investigation on mechanical properties and creep behavior of stir cast AZ91-SiCp composites

“…The finely dispersed SiC p strengthen the Mg matrix by blocking the dislocation motion within the composites. Also, the smaller sized grains have improved strength within the elastic region and facilitate enhanced tensile properties for the composites at room temperature [14]. In the present composite system, the grain size reduction for AZ91-5SiC p and AZ91-10SiC p is more predominant compared with AZ91 alloy with 15, 20 and 25 wt% SiC p .…”

Application of powder metallurgy and hot rolling processes for manufacturing aluminum/alumina composite strips

“…Heidarpour and Shafyei [17] studied the effect of hot rolling process on mechanical properties of Al-SiC composite and illustrated that the redistribution of reinforcement particles after rolling increased hardness of samples due to grain structure refinement. Pal et al [18] investigated room temperature mechanical properties and tensile creep behavior of powder metallurgy processed and hot rolled Al and its composites with different vol% SiC particulate reinforcements. They found that the increase in volume fraction of SiC resulted in a smooth increase in Young's modulus, yield and ultimate tensile strengths.…”

Effect of hot rolling temperature and thermal cycling on creep and damage behavior of powder metallurgy processed Al–SiC particulate composite

“…The results of a large number of published reports [9][10][11][12][13][14][15][16][17][18][19][20] indicate that the presence of SiC or other ceramic reinforcements leads to significant improvement in creep resistance through mechanisms of load transfer at particle-matrix interfaces, interaction of dislocations with sub-micrometer size dispersoids, and also due to the formation of dislocation substructure in the matrices. However, a few studies [21][22][23] have also shown the creep resistance of some of the P/M processed Albased composites to be worse than that of unreinforced powder metallurgy processed (P/M) Al, particularly when the size of the reinforcement is coarse or when load transfer at the particlematrix interfaces is weak. The damage at particle-matrix interfaces or in the matrix, as introduced by hot working could also adversely affect the creep strength of the DRA composites [23].…”

“…However, a few studies [21][22][23] have also shown the creep resistance of some of the P/M processed Albased composites to be worse than that of unreinforced powder metallurgy processed (P/M) Al, particularly when the size of the reinforcement is coarse or when load transfer at the particlematrix interfaces is weak. The damage at particle-matrix interfaces or in the matrix, as introduced by hot working could also adversely affect the creep strength of the DRA composites [23]. The effect of the reinforcement size and volume fraction on damage evolution during tensile creep has been also examined [24][25][26].…”