The present study focused on strontium (Sr)-induced A383 alloy and composite reinforced with 6 wt% boron carbide (B₄C) particles processed by stir casting technique. From metallographic analysis, it was confirmed that Sr addition modified needle structures of α-Si to fine α-Si. This grain refinement enhanced the hardness of A383-Sr alloy by 52.72% and A383-Sr/B₄C by 73.6%, and tensile strength of A383-Sr by 69.93% and A383-Sr/B₄C by 81% when compared to A383 unmodified alloy. Fractography analysis proved that both Sr-induced alloy and composite had brittle failure with clear formation of flakes and cleavages. Reciprocating wear test was conducted at various loads (15 N, 25 N, 35 N) and at sliding distances (500 m, 1000 m, 1500 m). It was observed that wear rate was proportional to the applied load. Wear rate increased with increase in sliding distance, but after 1000 m, there was decline in wear rate. Worn surface analysis revealed the presence of oxide layer after 1000 m which enhanced wear resistance. A383-Sr/B₄C composite possessed superior wear resistance compared to other.

本研究的重点是锶（Sr）诱导的A383合金和由6 wt％碳化硼（B ₄ C）颗粒通过搅拌铸造技术处理的复合材料。从金相分析可以确认，Sr添加将α-Si的针状结构改性为细α-Si。这种晶粒细化将A383-Sr合金的硬度提高了52.72％，将A383-Sr / B ₄ C的硬度提高了73.6％，并将A383-Sr的拉伸强度提高了69.93％和A383-Sr / B _4。与A383未改性合金相比，C降低了81％。断口分析表明，Sr诱导的合金和复合材料均具有脆性破坏，并清楚地形成薄片和解理。在各种负载（15 N​​，25 N，35 N）和滑动距离（500 m，1000 m，1500 m）下进行往复磨损测试。观察到磨损率与施加的载荷成比例。磨损率随滑动距离的增加而增加，但1000 m之后，磨损率下降。磨损的表面分析表明1000 m后存在氧化层，从而增强了耐磨性。与其他相比，A383-Sr / B ₄ C复合材料具有优异的耐磨性。