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In the current work, applying a rotating magnetic field (RMF) is an innovative approach to improve the microstructure features and creep resistance of Sn-2.0Ag-2.0Zn (SAZ) alloy. The results revealed that RMF does not change intermetallic compounds (IMCs) constituents furthermore SAZ alloy with applying a magnetic field (SAZ-B) exhibited microstructure refinement and homogeneous distribution of IMCs. Moreover, SAZ-B displayed more creep resistance (∼366%) and greater creep rupture time (∼56.4%) than those of SAZ alloy. These results have great implications in improving the alloy’s performance for industrial applications.

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The present research has been reinforced the aluminum bronze matrix composites (ABMCs) of weight concentration (Cu 89 -Al 11 ) by individual and/or hybrid additions of Al 2 O 3 and CNTs. ABMCs were fabricated via powder metallurgy technique. The physical properties such as density, electrical conductivity, thermal conductivity, hardness, and wear rate of the ABMCs alloys have been investigated. Microstructure features were discovered by utilizing SEM and EDX examination. The addition of 2 wt. % of CNTs was caused more refined grains and increased their uniform distribution otherwise adding of 2 wt. % Al 2 O 3 agglomerates throughout the active grain boundaries. The hybrid addition of 1.0 wt. % of Al 2 O 3 and 1.0Wt % CNTs improved the both hardness and wear resistance due to the physical synergistic reinforcement of them. Moreover, their good distribution at the grain boundary can form Zener pinning effect that restrict the grains growth of its matrix. Additionally, the addition of 2 wt.% CNTs enhanced the electrical and thermal conductivity of ABMCs because the CNTs creating new conductive paths in Aluminum bronze (AB) matrix.

Aluminum bronze metallic composite (ABMCs) alloys were fabricated via the powder metallurgy technique. The present work has been incorporated an individual as well as hybrid additions of Al 2 O 3 nanoparticles and multiwall carbon nanotubes (CNTs) into ABMCs. Microstructural characteristics and mechanical properties and sliding wear behavior plus some of the physical properties such as density, electrical conductivity, and thermal conductivity of the composite alloys have been studied. Microstructure features were discovered by utilizing FE-SEM and XRD measurements. The addition of 2 wt% of CNTs was caused more uniform distributed refined grains, but the adding of 2 wt% Al 2 O 3 was formed an agglomeration upon the active grain boundaries. Moreover, the yield stress and ultimate tensile strength of AB/Al 2 O 3 / CNTs hybrid composite alloy were improved up to ≈ 84% and ≈ 52%, respectively with respect to the plain monolithic alloy. Also, the hybrid addition enhanced both hardness and wear resistance by ≈ 12% and ≈ 189%, respectively. This enhancement may be attributed to the physical synergistic reinforcement of the hybrid addition and improvement of the internal microstructure as well as the Zener pinning effect which restricted the growth of the grains. Additionally, the addition of 2 wt% CNTs enhanced the electrical and thermal conductivity up to ≈ 5.3% and ≈ 22.8, respectively. Because the CNTs creating new conductive paths in the Aluminum bronze alloy.