Microstructural Evolution and Mechanical Properties of Laminated CuAl Composites Processed by Accumulative Roll-Bonding and Annealing

Lin, Hao-Hsiung; Tian, Yanzhong; Sun, Shijie; Zhang, Z. F.

doi:10.1007/s40195-020-01179-w

Cited by 15 publications

(3 citation statements)

References 33 publications

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“…Based on the above equations, the extra strengthening in the gradient materials is about 15.6 MPa, about 19.2% higher compared to the strength increment induced by USRP. Plastic deformation is known to significantly enhance the strength of metallic materials, but it often comes at the expense of ductility in homogeneous structures [12,27]. For instance, in the case of cold-rolled Cu-10Fe alloy, the tensile strength increases while the elongation decreases with an increasing rolling reduction.…”

Section: Mechanism For Improving the Strength Of Cu-10fe Alloy Via Usrpmentioning

confidence: 99%

Mechanical and Corrosion Behavior of a Composite Gradient-Structured Cu-Fe Alloy

Guan

et al. 2023

Metals

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Immiscible Cu-Fe alloys exhibit poor corrosion resistance due to different corrosion potentials between the constituent phases, which limits their application. In this paper, a composite gradient-structured Cu-10 wt.%Fe plate was prepared via the ultrasonic surface rolling process (USRP). The microstructure evolution, mechanical properties and corrosion behavior were studied. The results demonstrate that USRP effectively enhances both the strength and corrosion resistance of the Cu-10Fe alloy. The improved strength is related to the combined effects of Hall–Petch strengthening, dislocation strengthening, and additional strengthening resulting from homogeneous deformation between the surface layer and the matrix. The enhanced corrosion resistance is primarily attributed to the refined microstructure of the surface layer after USRP, which facilitates the formation of a protective passivation film.

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Section: Mechanism For Improving the Strength Of Cu-10fe Alloy Via Usrpmentioning

confidence: 99%

Mechanical and Corrosion Behavior of a Composite Gradient-Structured Cu-Fe Alloy

Guan

et al. 2023

Metals

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“…[ 5 ] After the ARB process, recovery and recrystallization occur in the Cu–Al composites at low annealing temperatures. [ 6 ] Besides, the microhardness reduction was observed both in the HPT copper annealed at 50 °C and after six weeks of storage for self‐annealing. [ 7,8 ] In addition, in some further studies, the heavily deformed copper wires lose strength even at ambient temperature after being stored for 12 months.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Study on the Evolution of Microstructure, Strength, and Electrical Conductivity of the Annealed Oxygen‐Free Copper Wires

Sun

Hou

et al. 2022

Adv Eng Mater

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In the process of electric power transmission, the defects in the copper wire interact with the electrons which results in a thermal effect, accordingly, causing the changes of microstructure and properties of the copper wire. Herein, the evolution of microstructure, strength, and electrical conductivity of the oxygen‐free copper wires annealed at different temperatures is investigated. In addition, the effects of various microstructures on strength and electrical conductivity are quantitatively revealed. In the low‐temperature region (80–150 °C), dislocation recovery is the main reason for the decrease in strength; while, the increase in electrical conductivity is mainly due to the decrease in dislocation density and the transformation of grain boundary from nonequilibrium state to equilibrium state. In the high‐temperature region (above 210 °C), the strength loss is mainly related to the increasing recrystallized grain size and the disappearance of dislocations in the recrystallized region. The increase in electrical conductivity is mainly attributed to the significant decrease in grain boundary density and the further recovery of dislocations.

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“…For lamellar materials, especially those that are produced by such processes as cold roll bonding (CRB) or accumulative roll bonding (ARB), great attempts have been made to relate production processes to the mechanical properties [1][2][3][4][5][6][7][8][9][10][11]. In the case of the ARB process, most researchers have claimed that the nucleation and propagation of micro-voids during ARB cycles to underlie the failure of metallic composite materials.…”

Section: Introductionmentioning

confidence: 99%

Effects of processing parameters on the fracture behaviour of cold roll bonded and accumulative roll bonded Al–Cu lamellar composites

Mehr

Ahmad

Toroghinejad

2021

Materials Science and Technology

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Al–Cu composites were fabricated by cold roll bonding (CRB) and accumulative roll bonding (ARB) processes. The effects of different parameters were investigated on the failure mechanism of the composites. A scanning electron microscope (SEM) and an optical microscope (OM) were used to characterise the microstructures of the resulting composites. The peeled surfaces of the CRBed material revealed that micro-cracks were formed almost perpendicular to the rolling direction and caused the premature failure of the bonding during the peeling test. Also, tensile, microhardness and shear punch tests were conducted on the Al–Cu composites produced under different conditions. Failure analysis of the non-heat-treated composites revealed that the layers separated from the middle of ARBed specimens. However, these centre-line separations were alleviated in composites subjected to heat treatment, even though the initiation of inter-lamellar micro-cracks were observed due to the formation of intermetallic compounds for heat-treated specimens.

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Microstructural Evolution and Mechanical Properties of Laminated CuAl Composites Processed by Accumulative Roll-Bonding and Annealing

Cited by 15 publications

References 33 publications

Mechanical and Corrosion Behavior of a Composite Gradient-Structured Cu-Fe Alloy

Mechanical and Corrosion Behavior of a Composite Gradient-Structured Cu-Fe Alloy

Quantitative Study on the Evolution of Microstructure, Strength, and Electrical Conductivity of the Annealed Oxygen‐Free Copper Wires

Effects of processing parameters on the fracture behaviour of cold roll bonded and accumulative roll bonded Al–Cu lamellar composites

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