The present work epitomizes the mechanical properties and microstructural comparison of the microwave-assisted sintered (MAS, 600 ℃) and spark plasma sintered (SPS, 550 ℃) Al- (13.3 wt% SiC + 6.7 wt% BC) composite. Results reveal that the spark plasma sintered composite exhibits a higher ultimate tensile strength of 281 MPa and compression strength of 323 MPa compared to those synthesized by MAS composite (253 MPa and 291 MPa respectively). The TEM analysis confirms the presence of clean interfaces in SPS composite but not for MAS samples. The SEM analysis for the MAS composite depicts the presence of agglomerations and the corresponding AlBC phase was confirmed in XRD analysis. The absence of the AlBC agglomeration in the SPS composite leads to ductile fracture while the mode of fracture changed from ductile to brittle due to the presence of particle debonding and particle cracking in the MAS composite.

中文翻译：

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放电等离子烧结与微波烧结Al-(SiC+B4C)复合材料显微组织和力学性能比较

目前的工作概括了微波辅助烧结（MAS，600 ℃）和放电等离子烧结（SPS，550 ℃）Al-（13.3 wt% SiC + 6.7 wt% BC）复合材料的机械性能和微观结构比较。结果表明，与 MAS 复合材料合成的复合材料（分别为 253 MPa 和 291 MPa）相比，放电等离子烧结复合材料表现出更高的极限拉伸强度（281 MPa）和压缩强度（323 MPa）。 TEM 分析证实 SPS 复合材料中存在干净的界面，但 MAS 样品则不然。 MAS 复合材料的 SEM 分析表明存在团聚，相应的 AlBC 相在 XRD 分析中得到证实。 SPS 复合材料中不存在 AlBC 团聚导致延性断裂，而 MAS 复合材料中由于存在颗粒脱粘和颗粒裂纹，断裂模式从延性转变为脆性。