Effect of Cross Accumulative Roll Bonding Process on Microstructure and Mechanical Properties of Laminated 1100/7075 Composite Sheets

Chen, Zejun; Hu, Hongbo; Wu, Xiaohu; Zhou, Minhong; Nyirenda, Kawunga; Liu, Qing; Wang, Guojun; Wang, Deman

doi:10.1007/978-3-319-48764-9_284

Cited by 1 publication

(1 citation statement)

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“…The microhardness increases quickly during the first and second accumulative roll bonding cycles, then further increases slowly before becoming saturated by subsequent accumulative roll bonding cycles. This outcome is similar to earlier investigations on the accumulative roll bonding process [15, 37–39]. The Strain hardening is caused by high dislocations that interfere with the moment of newly generated dislocation hence causing the rapid rise in microhardness seen during the first cycle [40, 41].…”

Section: Results and The Data Analysissupporting

confidence: 89%

Accumulative roll bonding of aluminum alloy 6082: Microstructural evolution and mechanical properties

Verma,

Padap

2023

Materialwissenschaft Werkst

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Material strengthening is a key objective of researchers and scientists in the present scenario for industrial applications. Although many processes can strengthen and refine grains, severe plastic deformation is the most dominant of all other techniques. Accumulative roll bonding is one of the severe plastic deformation techniques. This study examined how the various accumulative roll bonding cycles at the elevated preheating temperature affected the mechanical characteristics and microstructural evolution of the AA6082 strip. An optical microscope, scanning electron microscope, and electron backscatter diffraction were used to analyze the bonding and microstructural features. To determine mechanical characteristics, tensile and microhardness tests were also performed. The ultrafine grain size was achieved after accumulative roll bonding processing of AA6082. Accumulative roll bonding processing enhances mechanical properties like tensile strength and microhardness during the initial accumulative roll bonding cycle, but these properties grow more slowly at higher accumulative roll bonding cycles. However, the elongation value considerably decreased in the first cycle before stabilizing. The nice bonding between the layers was seen after accumulative roll bonding. Even after accumulative roll bonding, the fracture morphology reveals a ductile mode of fracture.

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Section: Results and The Data Analysissupporting

confidence: 89%