On the flow and mechanical behavior of Al matrix composite reinforced by nickel based (90% Ni–10% Cr) wires during equal channel angular pressing

Mirab, Saeideh; Nili‐Ahmadabadi, Mahmoud

doi:10.1016/j.msea.2013.05.031

Cited by 11 publications

(6 citation statements)

References 30 publications

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“…After mechanical polishing, the surface of each sample shows deformation traces through metallographic corrosion, shown in Figure 1c,e,g. The deformation traces of 1P are consistent with typical flow patterns of a single pass of ECAP deformation as reported in [40,41], in which the effective region occupied around 17.3% of the sample. Based on the characteristics of the RD-ECAP process, the sample will be rotated after each pass [26,27]; consequently, the flow pattern is different from that of the typical routes A, Ba, Bc, and C [42].…”

Section: Microstructure Evolutionsupporting

confidence: 86%

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The Effect of Rotary-Die Equal-Channel Angular Pressing Process on the Microstructure, the Mechanical and Friction Properties of GW103 Alloy

et al. 2022

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In this study, the effect of rotary-die equal-channel angular pressing (RD-ECAP) on the microstructure and texture evolution of GW103 alloy is studied. RD-ECAP processes were carried out for 1, 4 and 12 passes at 450 °C. The mechanical properties and friction behavior of RD-ECAP-processed Mg-10Gd-3Y (wt%) alloy (GW103) are discussed. The results reveal that the size of dynamic recrystallized grains and second-phase particles are significantly refined to about 1.3 μm and 1 μm, respectively. The texture evolution of the processed samples is studied by X-ray diffraction and electron backscattered diffraction techniques. The multiple texture components formed are not observed after the conventional ECAP process. Moreover, different dynamic recrystallization (DRX) mechanisms are systemically analyzed and discussed in view of the texture evolution of ECAP processed samples. The final textures obtained after 12 passes are identified as two types: The C-texture type induced by continuous and discontinuous DRX, and the random texture components induced by reorientation of the initial <101¯0> fiber. Based on the grain refinement, precipitate strengthening and texture weakening mechanisms, a high-performance ternary alloy of Mg-Gd-Y was firstly obtained through 12 passes RD-ECAP processing, with a combination of high yield strength of 312 MPa and a high ductility of 22%. In addition, the friction behaviors are also studied. The multi-pass-processed samples exhibit a relatively lower friction coefficient under a load of 10 N at room temperature.

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Section: Microstructure Evolutionsupporting

confidence: 86%

“…More cycled traces can be found in the 12P sample (Figure 1g), where about 96.7% of the area was severely deformed. However, a dead metal zone [41] formed at the end of the 12P sample and resulted in the formation of cracking.…”

Section: Microstructure Evolutionmentioning

confidence: 99%

The Effect of Rotary-Die Equal-Channel Angular Pressing Process on the Microstructure, the Mechanical and Friction Properties of GW103 Alloy

et al. 2022

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“…With the obtained UFG form, in methods similar to ECAP, the addition of the alloying elements to the structure enables one to have a composite structure. This way, grain investigation and composition development can be achieved at the same time and in the same structure [15].…”

Section: Introductionmentioning

confidence: 99%

Grain Size and Grain Boundary Analysis of Aluminum Compacts with/without 10 wt.% of Nickel Powder Processed by Equal Channel Angular Pressing

Demir¹,

Aksöz

Güral

2018

Acta Phys. Pol. A

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The aim of this study is to consolidate the Al-Ni powders using the equal channel angular pressing method in order to achieve improved structural and mechanical properties. Thus, both alloying ability at low temperature, as a result of consolidations of ultrafine grained alloy by equal channel angular pressing method, and the average grain size and grain boundary angle have been studied and the effect of Nickel has been investigated. Severe plastic deformation and consolidation process with 15 passes of equal channel angular pressing, having route C, have been carried out at 200 • C using pure aluminum and aluminum with 10 wt.% of nickel. Electron backscatter diffraction was used to obtain scanning electron microscopy images and to determine the average grain size and average grain boundary angle. Density measurements of samples have been carried out using the Archimedes principle and the microhardness distributions have been obtained using the HV 0.5 method.

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“…Though the role of thermal activation in diffusion and phase transformation has been established, the function of force has only recently been investigated as a useful method for controlling the microstructure and properties of metal materials [1,2]. Severe plastic deformation processes based on the force effect theory, such as equal-channel angular extrusion/ pressing (ECAE/P) [3][4][5], high-pressure torsion [6,7], and accumulative roll bonding (ARB) [8,9], have been rapidly developed. Initially, the processes were only applied to mono-materials, such as steel [10,11], aluminum [12], copper [13], nickel [14], and titanium [15].…”

Section: Introductionmentioning

confidence: 99%

Formation of intermetallic compounds of Cu/Al multilayer foils during cold rolling

Sun

2015

Sci. China Mater.

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Sci China Mater 2015, 58: 574-583 ening may prevent severe plastic deformation. Therefore, understanding whether chemical reactions can occur and new phases can be formed during producing multi-layered composites by severe plastic deformation is important. However, these behaviors are not well understood. Accordingly, the occurrence of chemical reactions in heavily strained dissimilar metals at room temperature must be demonstrated.We want to determine the behavior of a laminated-metal composite when pressure is applied. A four-high micro-foil mini mill (3M mill) was previously developed to roll extremely thin strips [29]. Using the 3M mill, a 0.13-mmthick Cu/Al composite foil was obtained at room temperature without annealing. Surprisingly, some new phases were observed at the interfaces of the roll-bonded Cu/Al composite foil. Transmission electron microscopy/selected area eltrecon diffraction (TEM/SAED) and scanning electron microscopy/energy-dispersive X-ray spectrometry (SEM/EDS) reveal that the new phases are composed of Al 2 Cu/AlCu/Al 4 Cu 9 . Thus, room-temperature chemical reactions conclusively occur under force effects. EXPERIMENTAL SECTIONSpecial rolling process Pure copper T2 (99.8% purity) with size 100 mm×30 mm×0.21 mm (length×width×thickness), and pure aluminum A1100 (99.7% purity) with size 100 mm×30 mm×0.20 mm were selected as initial materials. To obtain good bonding between the metal layers, aluminum and copper sheets were annealed at 500°C and 600°C for 1 h, respectively, and were polished using a stainless steel brush to remove surface oxidation films. After ultrasonic washing in acetone and hot air drying, 23 layers were alternately stacked (11 layers Al and 12 layers Cu). The sample was cold rolled at room temperature using six passes. The first two passes were performed on a two-high mill with a roll diameterIn metallurgical theory, the generation of new phases requires high temperature diffusion over a long period of time. Here, we report an experimental study of the generation of new phases using large mechanical deformations and high pressure, rather than heat. A 4.83-mm-thick 23-layered Cu/Al sandwich strip was formed by cold rolling. When the Cu/Al sandwich was further rolled to a 0.13-mm-thick foil on a four-high micro-foil mini mill at room temperature, some rectangular-shaped phases appeared at the Cu/Al interfaces. The scanning electron microscopy, transmission electron microscopy, and X-ray diffraction analyses reveal that the phases are a mixture of Al2Cu/ AlCu/Al4Cu9, which indicates that chemical reactions occur at the Cu/Al interfaces during cold deformation. This study provides new insights into the design and development of composite materials for various applications.

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On the flow and mechanical behavior of Al matrix composite reinforced by nickel based (90% Ni–10% Cr) wires during equal channel angular pressing

Cited by 11 publications

References 30 publications

The Effect of Rotary-Die Equal-Channel Angular Pressing Process on the Microstructure, the Mechanical and Friction Properties of GW103 Alloy

The Effect of Rotary-Die Equal-Channel Angular Pressing Process on the Microstructure, the Mechanical and Friction Properties of GW103 Alloy

Grain Size and Grain Boundary Analysis of Aluminum Compacts with/without 10 wt.% of Nickel Powder Processed by Equal Channel Angular Pressing

Formation of intermetallic compounds of Cu/Al multilayer foils during cold rolling

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