Fabrication of AlZn4SiPb/Steel Clad Sheets by Roll Bonding: Their Microstructure and Mechanical Properties

An AlZn4SiPb/steel clad composite was prepared via roll bonding at room temperature. The influence of solution and aging treatment on the structure performance investigated. results show that Al/steel composites exhibited satisfactory interfacial adhesion. Pb aged Al matrix spheroidized uniformly dispersed. uneven transition area with a thickness 30–150 nm observed for sample. Some rod-shaped nanoscale β’ phases occurred in matrix. After treatment, steel layer recovered, γ-fibre texture increased. tensile strength individual alloy improved. yield ratio sheet lower than initial values were consistent computed from rule mixture. sample 70 MPa; greatly improved reached 130 MPa strength.