Significant enhancement of bond strength in the roll bonding process using Pb particles

Abstract

Composite materials and layered alloys have become an interesting topic in materials development. The roll bonding (RB) process as a solid phase method of bonding has been widely used in the manufacturing of layered strips. The poor bond strength is one of the major drawbacks of the RB process. In the present study, Pb particles were used to enhance the bond strength between aluminum strips as filler material. AA1050 particle-reinforced sheets with different contents of interlayer Pb particles were fabricated at various rolling temperatures and thickness reduction ratios. Effects of roll bonding parameters that create successful bonds such as amount of Pb particle content, plastic strain from rolling process and rolling temperature were investigated. The bond strength was evaluated by the peeling test. It was found that by increasing the rolling temperature, thickness reduction ratio and Pb content, successful bonds with higher strength were created. Scanning electron microscopy was utilized to characterize the peeled surface of AA1050/Pb samples.

The simulation of microstructural evolutions in friction stir additive manufacturing

“…The microstructures take key role for the determination of the final mechanical properties. [61][62][63] So, the grain distributions on different layers in SZ in case1 are presented in Figure 13. The grains become smaller with the increase of layer number.…”

Fabrication of a High Wear Resistance AA7075/AL2O3 Composites Via Liquid Metallurgy Process

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