Microstructure and mechanical properties of Cu/Al/Cu clad strip processed by the powder-in-tube method

Gao, Haitao; Liu, X.H.; Qi, Junlong; Ai, Zhengrong; Liu, L.Z.

doi:10.1016/j.jmatprotec.2017.07.035

Cited by 48 publications

(13 citation statements)

References 23 publications

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“…The value of n is 6.90 and the constant α can be attained as α=β/n 1 =0.0254 MPa -1 . The hot deformation activation Q, which indicates the difficulty degree of deformation in test material [10], can be calculated by taking partial differential of equation (3), as shown in equation (6).…”

Section: Deformation Constitutive Equationsmentioning

confidence: 99%

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Hot Deformation Behaviors of Cu/Al Laminated Composites

Liu

Wang

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In order to research the hot deformation behaviors of Cu/Al laminated composites, isothermal hot compression tests were conducted on a Gleeble-1500D thermo-mechanical simulator in the temperature range of 300 ~ 450°C and strain rate range of 0.01 ~ 1 s -1 . After hot compression, the cooperative deformation behaviors between Cu and Al were discussed. The effects of deformation temperature and strain rate on the deformation behaviors were described using an Arrhenius-type constitutive equation. Furthermore, considering the effect of strain, the constitutive model was modified. The predicated flow stress values obtained from the modified constitutive equation could be well in accord with the experimental values. High correlation coefficient and low average absolute relative error demonstrate the high accuracy of the constitutive model developed in this work.

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Section: Deformation Constitutive Equationsmentioning

confidence: 99%

“…And several fabricate methods were presented gradually [2][3][4][5][6]. Whereas, researches on the hot deformation behavior of Cu/Al laminated composites are still not comprehensive enough.…”

Section: Introductionmentioning

confidence: 99%

Hot Deformation Behaviors of Cu/Al Laminated Composites

Liu

Wang

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Copper/aluminum (Cu/Al) laminated composites have been developed to meet these demands and several fabricate methods also have been presented in recent years [1][2][3][4][5]. Practices indicate that compared to monometallic copper or copper alloy, Cu/Al composites can reduce the weight of 40 ~ 50 %, save the cost of 30 ~ 50 % and keep almost consistent electrical and thermal conductivity [6].…”

Section: Introductionmentioning

confidence: 99%

“…Practices indicate that compared to monometallic copper or copper alloy, Cu/Al composites can reduce the weight of 40 ~ 50 %, save the cost of 30 ~ 50 % and keep almost consistent electrical and thermal conductivity [6]. Therefore, Cu/Al laminated composites have been utilized in a number of areas such as power, communication, architecture and aerospace [5,7]. Until now, numerous studies about Cu/Al composites are mainly focused on the fabricate technologies [1][2][3][4][5], thermal treatment crafts [8][9][10] and bonding mechanisms [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, Cu/Al laminated composites have been utilized in a number of areas such as power, communication, architecture and aerospace [5,7]. Until now, numerous studies about Cu/Al composites are mainly focused on the fabricate technologies [1][2][3][4][5], thermal treatment crafts [8][9][10] and bonding mechanisms [11,12]. However, thermal mechanical machining such as hot rolling and tension also are necessary for Cu/Al composites in order to meet various industrial needs, to the authors' knowledge, related research is not available.…”

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confidence: 99%

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Hot Deformation Behaviour of Cu/Al Laminated Composites under Interface Constraint Effect

Liu¹,

Wang²,

Liang³

et al. 2018

Preprint

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Abstract:In order to understand the hot deformation behavior of novel Cu/Al laminated composites, isothermal hot compression tests were conducted by Gleeble-1500D thermo-mechanical simulator. And the effect of bonding interface, deformation temperature and strain rate on the deformation behavior was analyzed. Results show that under the interface constraint effect, soft Al layer trends to flow synchronously with hard Cu layer. And further microstructure examinations indicate the cooperative deformation capability of Cu/Al composites increases with increasing stain rate and decreasing deformation temperature. Strain hardening exponent, calculated based on the true stress-true strain data, also proves the effect of deformation temperature and strain rate on the cooperative deformation behavior. Meanwhile, unique composites structure allows the Al matrix to exhibit the characteristic of dynamic recrystallization during the hot deformation process. Lastly, strain compensated Arrhenius-type constitutive equation was employed to describe the coupling effect of temperature, strain rate and strain on the flow stress. Key words: Cu/Al laminated composites; deformation behavior; interface; microstructure; constitutive equation IntroductionWith the rapid development of modern industry, light-weight is an intense pursuit goal for more economical and green development at the basis of keeping original mechanical properties. Copper/aluminum (Cu/Al) laminated composites have been developed to meet these demands and several fabricate methods also have been presented in recent years [1][2][3][4][5]. Practices indicate that compared to monometallic copper or copper alloy, Cu/Al composites can reduce the weight of 40 ~ 50 %, save the cost of 30 ~ 50 % and keep almost consistent electrical and thermal conductivity [6]. Therefore, Cu/Al laminated composites have been utilized in a number of areas such as power, communication, architecture and aerospace [5,7]. Until now, numerous studies about Cu/Al composites are mainly focused on the fabricate technologies [1][2][3][4][5], thermal treatment crafts [8][9][10] and bonding mechanisms [11,12]. However, thermal mechanical machining such as hot rolling and tension also are necessary for Cu/Al composites in order to meet various industrial needs, to the authors' knowledge, related research is not available.For the hot deformation behavior of metal materials, the essence is dynamic competition between work hardening and dynamic softening (including dynamic recrystallization and dynamic recovery), and the process is significantly affected by deformation temperature, strain rate, microstructure and so on [13]. Until now, Arrhenius-type constitutive equation is a kind of commonly used mathematical model to describe the relationship between the flow stress and deformation temperature, strain rate and deformation activation energy during the hot deformation process [14]. And the hot deformation behaviors of constituent metals of Cu/Al laminated composites have been investigated respectively thro...

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Sandwich‐Like Cu/Al/Cu Composites Fabricated by Cryorolling

et al. 2020

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Herein, sandwich‐like Cu/Al/Cu composites are fabricated by hot rolling (300 °C), cold rolling (25 °C), cryorolling (−100 and −190 °C), respectively. Tensile tests are conducted and the fracture surfaces of both the Al and Cu sides are examined using scanning electron microscopy (SEM) for fractography and SEM‐based energy‐dispersive analysis. The microstructure of the composites is evaluated by optical microscopy and SEM. Results reveal that the highest ultimate tensile strength and the best ductility of the composites have been achieved using cryorolling of the rolling temperature −100 °C. Finally, discussion on grain size, bonding quality, and the thickness of the intermetallic layer between Cu and Al layers on the mechanical properties of the sandwich‐like Cu/Al/Cu composites is focused.

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Microstructure and mechanical properties of Cu/Al/Cu clad strip processed by the powder-in-tube method

Cited by 48 publications

References 23 publications

Hot Deformation Behaviors of Cu/Al Laminated Composites

Hot Deformation Behaviors of Cu/Al Laminated Composites

Hot Deformation Behaviour of Cu/Al Laminated Composites under Interface Constraint Effect

Sandwich‐Like Cu/Al/Cu Composites Fabricated by Cryorolling

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