Al-Mg-Si/SiC laminated composites: Fabrication, architectural characteristics, toughness, damage tolerance, fracture mechanisms

摘要: Abstract Different architectures of layered laminates comprising two exterior layers Al-Mg-Si/SiC metal matrix composite and an Al1050 ductile interlayer were fabricated by means hot roll-bonding with applying different strains er = 39%, 51%, 63%. For monolithics production, ceramic particulate reinforcement contents 0, 5, 10, 15 vol% utilized. The aim introducing was to compensate the low toughness consequently enhancement damage tolerance bundled structures along prevention their catastrophic failure through activation extrinsic toughening mechanism. Effects architectural characteristics fabrication routes on fracture behavior materials studied mechanical examinations including three-point bending (3PB) shear tests. Fracture surfaces 3PB examination SEM while associated mechanisms correlations debonded area (delamination), deformability, SiC content disclosed discussed. analyses deriving σm performed role content, lamination er defined. Deformability identifying et, ei, ep parameters Based results, et trend obeyed rather than ei due more contribution in materials' total ductility. Toughness change accounting initiation propagation values surveyed considering combined effects σm, elongation, stress-bearing capacity. Eventually, it inferred that strongly controlled elongation alteration. In addition, highlighted for laminates. surfaces, monolithic samples, morphology concentration. had not been affected laminates; since influenced rolling. This distinct involved mechanisms. deformability governed delamination length as indication constraint level. Interfacial strength which acquired test revealed weak bondings beside presence particles; however, aluminum showed enhanced strength.