High elongation achieved by band-like distribution of reinforcements in aluminum matrix composites
论文类型：期刊论文
发表刊物：MATERIALS CHARACTERIZATION
收录刊物：SCIE
文献类型：J
卷号：144
页面范围：42-47
ISSN号：1044-5803
关键字：Whisker reinforced composites; Residual stress; Plastic deformation; Fracture; Band-like distribution
摘要：Ductile aluminum matrix composites reinforced by Al18B4O33 whisker (ABO) with band-like distribution (Band like Aluminum Matrix Composites, BAMCs) were fabricated by powder metallurgy and extrusion followed by annealing. The cracks tend to nucleate in the ABO-rich bands, but the band-like structure induces compressive residual stress then suppresses the crack propagation and improves the strain transferring ability in the BAMCs. The denser and smaller cracks formed in the BAMCs with higher ABO volume fraction during tensile test. These cracks play an important role in the strain non-localization process, but have negligible contribution to the tensile strain.
发表时间：2018-10-01