摘要
采用挤压铸造法制各了SiC颗粒混杂增强T700/Al和M40/Al复合材料,研究了材料的微观组织与力学性能。结果表明,复合材料组织致密,纤维分布均匀。铸造态复合材料存在界面反应,透射电镜和XRD分析表明M40/Al的界面反应物尺寸和数量均小于T700/Al,M40Cf与铝具有较好的化学相容性。拉伸试验表明,M40/Al的抗拉强度高于T700/Al,这是由于界面反应物的数量改变了复合材料的断裂机制。
SiCp hybridized T700/Al and M40/Al composites were fabricated by squeeze casting, and their microstructures and mechanical properties were investigated, The results show that the composites are dense and the fibers are distributed uniformly in the matrix （composite）. Interfacial reactions are found in the as-cast composites, due to better chemical compatibility of M40Cf with Al than that of T700Cf, the amounts and dimensions of reaction products of M40/Al composite are less than that of T700/Al composite by TEM observation and XRD analysis. M40/Al composite showed much higher strength than that of T700/Al composite by Tensile test and bending test, because the amounts and dimensions of aluminum carbide effect fracture mechanism of composites.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2007年第A03期328-330,共3页
Rare Metal Materials and Engineering
关键词
碳纤维
石墨纤维
颗粒混杂
铝
复合材料
Carbon fiber
graphite fiber
particle hybrid
aluminum
composite
