Microstructural evolution, mechanical properties, and strain hardening behavior of ultrafine grained commercial pure copper during the accumulative roll bonding process

2016 ◽  
Vol 650 ◽  
pp. 8-14 ◽  
Author(s):  
A. Fattah-alhosseini ◽  
O. Imantalab ◽  
Y. Mazaheri ◽  
M.K. Keshavarz
Keyword(s):  
Mechanical Properties ◽  
Microstructural Evolution ◽  
Accumulative Roll Bonding ◽  
Pure Copper ◽  
Bonding Process ◽  
Accumulative Roll Bonding Process ◽  
Roll Bonding ◽  
Hardening Behavior ◽  
Ultrafine Grained ◽  
Strain Hardening Behavior

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

2018 ◽  
Vol 53 (2) ◽  
pp. 209-218 ◽  
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.

Effect of Strain Rate on Microstructural Evolution of Nano-Grained Copper in Accumulative Roll-Bonding Process

2008 ◽  
Vol 580-582 ◽  
pp. 71-74
Author(s):  
Seong Hee Lee ◽  
Sang Shik Kim ◽  
Seung Zeon Han ◽  
Cha Yong Lim
Keyword(s):  
Mechanical Properties ◽  
Strain Rate ◽  
Microstructural Evolution ◽  
High Purity ◽  
Accumulative Roll Bonding ◽  
Bonding Process ◽  
Strain Rates ◽  
Accumulative Roll Bonding Process ◽  
Roll Bonding ◽  
Purity Copper

The effects of strain rate in rolling on microstructures and mechanical properties of a nano-grained high purity copper processed by accumulative roll bonding (ARB) were studied. The rolling during ARB was conducted with two kinds of strain rates (2.6sec-1 and 37sec-1). The microstructural evolution of the copper with ARB proceeding was somewhat different in both methods. However, the variation of mechanical properties with ARB was very similar to each other.

Microstructural Evolution during Accumulative Roll-Bonding Process of a High Performance Copper Alloy

2011 ◽  
Vol 378-379 ◽  
pp. 597-600
Author(s):  
Seong Hee Lee ◽  
Daejin Yoon ◽  
Hiroshi Utsunomiya
Keyword(s):  
Microstructural Evolution ◽  
Accumulative Roll Bonding ◽  
Copper Alloy ◽  
High Performance ◽  
Rolling Direction ◽  
Bonding Process ◽  
Accumulative Roll Bonding Process ◽  
Small Aspect Ratio ◽  
Roll Bonding ◽  
Ultrafine Grained

Microstructural evolution of a copper alloy processed by accumulative roll-bonding (ARB) was investigated by EBSD analysis. The grains became thinner and elongated to the rolling direction with increasing the number of ARB cycles. The subdivision of the grains to the rolling direction actively begins to occur after 5 cycles of the ARB, resulting in formation of ultrafine grains with small aspect ratio. After 8 cycles, the ultrafine grained structure with the average grain diameter of 250nm developed in almost whole regions of the sample. In addition, the fraction of high-angle grain boundaries increased with the number of ARB cycles and reached about 0.7 after 8 cycles. The texture development of the ARB processed samples was different depending on the number of ARB cycles and the positions in the thickness.

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