In the present work, Al–TiB₂ composites were casted using in situ and ex situ method of fabrication. The effect of processing temperature on the formation of titanium diboride particles was studied, and comparative evaluation of in situ and ex situ method was carried out. Characterization of composites was carried out to study the effect of various process parameters on the mechanical properties. The microstructure of in situ composites shows a homogeneous distribution of titanium diboride particles without agglomeration as compared to ex situ composites. SEM micrographs of in situ composites show distinct and reaction-free boundaries between reinforcement and matrix material as compared to the ex situ composites. In addition, average UTS of in situ AlSi₅Cu₃/3%TiB₂ composite and ex situ AlSi₅Cu₃/3%TiB₂ composite increased by 80.13% and 39.72% as compared to pure AlSi₅Cu₃, respectively. The average hardness of in situ AlSi₅Cu₃/3%TiB₂ composite and ex situ AlSi₅Cu₃/3%TiB₂ composite casted in metal mold increased by 45% and 31.66%, respectively, as compared to pure AlSi₅Cu₃.

在目前的工作中，Al-TiB ₂复合材料是采用原位和非原位制造方法铸造的。研究了加工温度对二硼化钛颗粒形成的影响，并进行了原位和异位方法的比较评价。对复合材料进行了表征，以研究各种工艺参数对机械性能的影响。与非原位复合材料相比，原位复合材料的微观结构显示出二硼化钛颗粒的均匀分布而没有团聚。原位复合材料的SEM显微照片显示，与异位复合材料相比，增强材料和基体材料之间存在明显的，无反应的边界。此外，原位AlSi ₅ Cu _3的平均UTS与纯AlSi ₅ Cu ₃相比，/ 3％TiB ₂复合材料和非原位AlSi ₅ Cu ₃复合材料/ 3％TiB ₂复合材料分别增加80.13％和39.72％。与纯AlSi ₅ Cu相比，在金属模具中铸造的原位AlSi ₅ Cu ₃ /3％TiB ₂复合材料和异位AlSi ₅ Cu ₃ /3％TiB ₂复合材料的平均硬度分别增加了45％和31.66％。₃。