Influence of Intermediate Heating in Cross Accumulative Roll-Bonding Process on Planar Isotropy of the Mechanical Properties of Commercial Purity Aluminium Sheet

In this study, warm accumulative roll bonding process has been used to produce metal matrix composite (Al/1% Al2O3). The microstructure and mechanical properties of composites have been studied after different warm accumulative roll bonding cycles by tensile test, Vickers micro-hardness test and scanning electron microscopy. The scanning electron microscopy results reveal that during higher warm accumulative roll bonding cycles, the layers of alumina particles are broken. It leads to the generation of elongated dense clusters with smaller sizes. This microstructure evolution leads to improve the hardness, strength and elongation during the accumulative roll bonding process. The results demonstrated that the dispersed alumina clusters improve both the strength and toughness of the composites. Also, an extra pass of cold rolling on the final warm accumulative roll bonding product shows the ability to obtain further strength. In general, warm accumulative roll bonding process would allow fabricating metal particle reinforced with high uniformity, good mechanical properties and high bonding strength.

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Microstructure and mechanical properties of SiC-particle-strengthening tri-metal Al/Cu/Ni composite produced by accumulative roll bonding process

International Journal of Minerals Metallurgy and Materials ◽

10.1007/s12613-018-1579-6 ◽

2018 ◽

Vol 25 (3) ◽

pp. 357-364 ◽

Cited By ~ 15

Author(s):

Moslem Tayyebi ◽

Beitallah Eghbali

Keyword(s):

Mechanical Properties ◽

Accumulative Roll Bonding ◽

Bonding Process ◽

Accumulative Roll Bonding Process ◽

Roll Bonding ◽

Microstructure And Mechanical Properties ◽

Particle Strengthening ◽

Sic Particle

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Evaluation of mechanical properties of 1050-Al reinforced with SiC particles via accumulative roll bonding process

Journal of Composite Materials ◽

10.1177/0021998318781462 ◽

2018 ◽

Vol 53 (2) ◽

pp. 209-218 ◽

Cited By ~ 24

Author(s):

Adel Fathy ◽

Dalia Ibrahim ◽

Omayma Elkady ◽

Mohammed Hassan

Keyword(s):

Electron Microscopy ◽

Mechanical Properties ◽

Scanning Electron Microscopy ◽

Field Emission ◽

Microstructural Evolution ◽

Accumulative Roll Bonding ◽

Bonding Process ◽

Accumulative Roll Bonding Process ◽

Roll Bonding ◽

Scanning Electron

Accumulative roll bonding was successfully used as a severe plastic deformation method to produce Al–SiC composite sheets. The effect of the addition of SiC particles on the microstructural evolution and mechanical properties of the composites during accumulative roll bonding was studied. The Al–1, 2 and 4 vol.% SiC composite sheets were produced by accumulative roll bonding at room temperature. Monolithic Al sheets were also produced by the accumulative roll bonding process to compare with the composite samples. Field emission scanning electron microscopy revealed that the particles had a random and uniform distribution in the matrix by the last accumulative roll bonding cycles, and strong mechanical bonding takes place at the interface of the particle matrix. This microstructural evolution led to improvement in the hardness, strength and elongation during the accumulative roll bonding process. It is also shown that by increasing the volume fraction of particles up to 4 vol.% SiC, the yield and tensile strengths of the composite sheets increased more than 1.2 and 1.3 times the accumulative roll-bonded aluminum sheets, respectively. Field emission scanning electron microscopy observation of fractured surface showed that the failure broken of composite was shear ductile rupture.

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