Formation of transition layer and its effect on mechanical properties of AlCoCrFeNi high-entropy alloy/Al composites

Liu, Yunzi; Chen, Jian; Li, Zhao; Wang, Xianhui; Fan, Xing; Liu, Jiangnan

doi:10.1016/j.jallcom.2018.11.364

Cited by 93 publications

(25 citation statements)

References 36 publications

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“…In recent years, significant effort has been directed to finding new types of reinforcements for MMCs and selecting suitable processing conditions of the composites to exploit the benefits of these reinforcements. New types of reinforcements include metallic glasses [2][3][4][5], high-entropy alloys [6][7][8] and quasicrystals [9][10][11] or their derivatives, which are phases forming upon the reaction of quasicrystals with the matrix [10,12]. When the reinforcing alloy is to be preserved in the metastable state, the schedule of the heat treatment of the composites should be carefully selected.…”

Section: Introductionmentioning

confidence: 99%

Interaction between Fe66Cr10Nb5B19 metallic glass and aluminum during spark plasma sintering

Dudina

Bokhonov

Batraev

et al. 2021

Materials Science and Engineering: A

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In the area of metal matrix composites, novel reinforcing options are currently being evaluated. Particles of amorphous alloys present an interesting possibility to reinforce soft metals. In the present work, the interaction between Fe66Cr10Nb5B19 metallic glass and aluminum during Spark Plasma Sintering (SPS) was studied for the first time. In order to trace the phase and microstructural changes upon sintering, mixtures containing 20 vol.% and 50 vol.% of metallic glass were subjected to SPS at 500-570 ºC. After SPS at 500 ºC, no reaction layer between the metallic glass particles and aluminum was observed. After SPS at 570 ºC, a reaction layer containing Fe2Al5 and FeAl3 formed around the Fe-based cores. The Vickers hardness of composites obtained from mixtures containing 20 vol. % Fe66Cr10Nb5B19 at 540 ºC was 75 HV and increased to 280 HV after sintering at 570 ºC due to the formation of thicker reaction layers at the interface.The hardness of the composite sintered from the mixture containing 20 vol. % Fe66Cr10Nb5B19 at 570 ºC was between the values predicted by Reuss and Voigt models.Comparison of results of SPS of the powder mixtures with those of SPS of a precompacted pellet and electric current-free annealing suggests that local heating at the interface caused by interfacial resistance may be an important factor influencing the reaction advancement at the interface and the formation of Al-containing intermetallics.

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Section: Introductionmentioning

confidence: 99%

Interaction between Fe66Cr10Nb5B19 metallic glass and aluminum during spark plasma sintering

Dudina

Bokhonov

Batraev

et al. 2021

Materials Science and Engineering: A

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“…Due to their sluggish diffusion behaviour, less reactive nature, and attractive properties, HEAs are an outstanding choice for reinforcement in AMCs [39,40]. Various researchers studied these novel MMCs reinforced with HEA particulates using different types of matrixes, HEA reinforcement, and manufacturing routes [4,[40][41][42][43][44][45][46]. Al-5083 matrix composites reinforced with CoCrFeNi and AlCoCrFeNi HEAs, have been fabricated by additive manufacturing and submerged friction stir processing, respectively [39,40].…”

Section: Introductionmentioning

confidence: 99%

“…AlCoCrFeNi HEA, in equiatomic and non-equiatomic compositions, has been employed as the reinforcement in spark plasma sintered AMCs. The fabricated composites exhibited improved yield strength, high strength, increased fracture surface energy, but low plasticity [41,42]. Composites based on Al-7075 and commercially pure Al have been fabricated with the addition of AlCoCrFeNiTi HEA particulates (equiatomic and non-equiatomic).…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Corrosion Performance of Aluminium Matrix Composites Reinforced with Refractory High-Entropy Alloy Particulates

et al. 2021

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Novel aluminium matrix composites reinforced by MoTaNbVW refractory high-entropy alloy (HEA) particulates have been fabricated by powder metallurgy. The microstructure of the produced composites has been studied and the corrosion behaviour assessed in 3.5% NaCl solution. The composites exhibited low porosity, good homogeneity, few defects, and good distribution of the reinforcing phase in the Al matrix. No secondary intermetallic phases have been formed while the interface between matrix/reinforcement showed good bonding with no signs of reactivity. Increasing the volume of the reinforcing phase leads to increased hardness values. Al-HEA composites exhibited susceptibility to localised forms of corrosion in 3.5% NaCl solution. The microstructure has been analysed and corrosion mechanisms have been formulated.

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“…Another way to overcome these adverse effects is to use metal reinforcements [8][9][10]. Metal reinforcements, such as metallic glasses [11,12], quasi-crystalline [13], alloy [14,15], intermetallics [16] and pure metal [17] so on, are considered by researchers to negate the adverse effects associating with ceramics. Available scientific literatures have been revealed that plasticity metallic reinforcements could improve the strength and plasticity of composites [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…Available scientific literatures have been revealed that plasticity metallic reinforcements could improve the strength and plasticity of composites [18][19][20][21]. Liu et al found that transition layer formed during the sintering of AlCoCrFeNi high-entropy alloy/Al composites [15]. The transition layer is favorable for the transformation of the stress state from the iso-stress condition to the iso-strain condition for the composites during the deformation process, which improved both yield strength and ductility of the composites.…”

Section: Introductionmentioning

confidence: 99%

Interface Structure and Mechanical Properties of 7075Al Hybrid Composite Reinforced with Micron Ti Metal Particles Using Pressure Infiltration

Liu

Zheng

Cao

et al. 2019

Metals

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Micron Ti metal particles were incorporated into SiCp/7075Al composites using pressure infiltration. The interface structure between the Ti metal particles and the matrix during the casting processes were investigated. Results show that the dispersed unreacted Ti particles form mutual diffusion layer at the interface without the formation of low-temperature intermetallic phases during the solidification processes. The interaction between the micron Ti and the molten aluminum alloy is subject to the mutual diffusion coefficient of Ti–Al rather than the reaction activation energy. The tensile strength and plasticity of the composite were improved simultaneously due to the high interfacial bonding strength and released thermal misfit stress cause by the incorporated Ti metal particles.

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Formation of transition layer and its effect on mechanical properties of AlCoCrFeNi high-entropy alloy/Al composites

Cited by 93 publications

References 36 publications

Interaction between Fe66Cr10Nb5B19 metallic glass and aluminum during spark plasma sintering

Interaction between Fe66Cr10Nb5B19 metallic glass and aluminum during spark plasma sintering

Microstructure and Corrosion Performance of Aluminium Matrix Composites Reinforced with Refractory High-Entropy Alloy Particulates

Interface Structure and Mechanical Properties of 7075Al Hybrid Composite Reinforced with Micron Ti Metal Particles Using Pressure Infiltration

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