Evolution of microstructure and mechanical properties in 2014 and 6063 similar and dissimilar aluminium alloy laminates produced by accumulative roll bonding

Arigela, Viswanadh Gowtham; PALUKURI, N. R.; Singh, Dharmendra; Kolli, Satish; Jayaganthan, R.; Chekhonin, Paul; Scharnweber, Juliane; Skrotzki, Werner

doi:10.1016/j.jallcom.2019.03.231

Cited by 30 publications

(9 citation statements)

References 19 publications

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“…Although the strongest of aluminum alloys owe their properties to precipitation hardening process (2xxx and 7xxx series), in recent years, a lot of effort has been undertaken to improve their parameters even further by different means [4,5]. These processes include operations as cryogenic rolling, equal channel angular pressing (ECAP), high-pressure torsion (HPT), accumulative extrusion bonding (AEB) and hydrostatic extrusion (HE) [6][7][8][9][10][11][12][13][14]. All operations except cryogenic rolling correspond to severe plastic deformation (SPD) process, in which deformation of material produces fine microstructure, improving its mechanical properties according to the Hall-Petch relationship [6,10,15].…”

Section: Introductionmentioning

confidence: 99%

Low Cycle Fatigue Properties of Sc-Modified AA2519-T62 Extrusion

et al. 2020

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This investigation presents the results of research on low cycle fatigue properties of Sc-modified AA2519-T62 extrusion. The basic mechanical properties of the investigated alloy have been established in the tensile test. The low cycle fatigue testing has been performed on five different levels of total strain amplitude: 0.4%; 0.5%; 0.6%; 0.7% and 0.8% with cycle asymmetry coefficient R = 0.1. For each level of total strain amplitude, the graphs of variations in stress amplitude and plastic strain amplitude in the number of cycles have been presented. The obtained results allowed to establish Ramberg-Osgood and Manson-Coffin-Basquin relationships. The established values of the cyclic strength coefficient and cyclic strain hardening exponent equal to k’ = 1518.1 MPa and n’ = 0.1702. Based on the Manscon-Coffin-Basquin equation, the values of the following parameters have been established: the fatigue strength coefficient σ’f = 1489.8 MPa, the fatigue strength exponent b = −0.157, the fatigue ductility coefficient ε’f = 0.4931 and the fatigue ductility exponent c = −1.01. The fatigue surfaces of samples tested on 0.4%, 0.6% and 0.8% of total strain amplitude have been subjected to scanning electron microscopy observations. The scanning electron microscopy observations of the fatigue surfaces revealed the presence of cracks in striations in the surrounding area with a high concentration of precipitates. It has been observed that larger Al2Cu precipitates exhibit a higher tendency to fracture than smaller precipitates having a higher concentration of scandium and zirconium.

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Section: Introductionmentioning

confidence: 99%

Low Cycle Fatigue Properties of Sc-Modified AA2519-T62 Extrusion

et al. 2020

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“…Generally, in a composite, metal co-deformation is difficult if the metals differ greatly in their flow stresses and hardness [ 15 ]. The harder material is generally more susceptible to necking and rupturing so that the final microstructure is always full of fragments of the harder material in its softer matrix, rather than a continuous laminated structure.…”

Section: Resultsmentioning

confidence: 99%

“…Various metal materials of the same base metals have been used to produce laminate composites, such as AA6061/AA5754 [ 12 ], AA7075/AA1100 [ 13 ], and Al–Li/Al–Li–Zr [ 14 ]. V. G. Arigela et al [ 15 ] produced AA2014/AA6063 composites by ARB and compared the deformation processes in individual layers. However, the strength of the composites was found to drop slightly because they did not undergo aging treatments, and the differences between layers were not maintained.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Al-Mg-Si Similar Alloy Laminates Produced by Accumulative Roll Bonding

Jiang

Wang

et al. 2021

Materials

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As the applications of heterogeneous materials expand, aluminum laminates of similar materials have attracted much attention due to their greater bonding strength and easier recycling. In this work, an alloy design strategy was developed based on accumulative roll bonding (ARB) to produce laminates from similar materials. Twin roll casting (TRC) sheets of the same composition but different cooling rates were used as the starting materials, and they were roll bonded up to three cycles at varying temperatures. EBSD showed that the two TRC sheets deformed in distinct ways during ARB processes at 300°C. Major recrystallizations were significant after the first cycle on the thin sheet and after the third cycle on the thick sheet. The sheets were subject to subsequent aging for better mechanical properties. TEM observations showed that the size and distribution of nano-precipitations were different between the two sheet sides. These nano-precipitations were found to significantly promote precipitation strengthening, and such a promotive effect was referred to as hetero-deformation induced (HDI) strengthening. Our work provides a new promising method to prepare laminated heterogeneous materials with similar alloy TRC sheets.

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“…Numerous studies have addressed the mechanical properties and microstructural alterations of metals and different alloys such as aluminum, copper, nickel, steel, and titanium [11][12][13]7,14,15]. Qualitative and quantitative investigations indicated a decrease in the grain size as well as wide variations in the dislocation density and other microstructural parameters, an increase of strength and hardness, brittleness enhancement, and edge cracking in the prepared samples [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Improving the fracture toughness of multi-layered commercial pure aluminum via warm accumulative roll bonding

Attar

Nia

Mazaheri

et al. 2021

Int J Adv Manuf Technol

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In this study, the fracture toughness of the multi-layered commercial pure aluminum samples (AA1050) prepared by warm accumulative roll bonding (WARB) was investigated for the first time. Based on the ASTM E561 standard, the R-curve method was utilized to measure the plane stress fracture toughness. Compact tension (CT) samples were prepared from the sheets that were processed by different ARB cycles. Mechanical properties, microstructure, and fracture surfaces of the CT samples were studied by uniaxial tensile test, electron backscatter diffraction (EBSD), and scanning electron microscopy (SEM), respectively. By increasing the number of WARB cycles, fracture toughness increased; after five cycles, 78% enhancement was observed compared to the pre-processed state. A correlation was seen between the fracture toughness variations and ultimate tensile strength (UTS). WARB enhanced UTS up to 95%, while the grain size showed a reduction from 35 to 1.8 μm. Measured fracture toughness values were compared with the room temperature ARB outcomes, and the effective parameters were analyzed.Fractography results indicated that the presence of tiny cliffs and furrows and hollow under fatigue loading zones and shear ductile rupture in the Quasi-static tensile loading zone.

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Evolution of microstructure and mechanical properties in 2014 and 6063 similar and dissimilar aluminium alloy laminates produced by accumulative roll bonding

Cited by 30 publications

References 19 publications

Low Cycle Fatigue Properties of Sc-Modified AA2519-T62 Extrusion

Low Cycle Fatigue Properties of Sc-Modified AA2519-T62 Extrusion

Microstructure and Mechanical Properties of Al-Mg-Si Similar Alloy Laminates Produced by Accumulative Roll Bonding

Improving the fracture toughness of multi-layered commercial pure aluminum via warm accumulative roll bonding

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