Design, Fabrication of Equal Channel Angular Extrusion Process and its Effect on Microstructure and Hardness of Al and Cu Alloys

Patel, Payank; Mohanan, Mithun; Sarvaiya, Vishwarajsinh; Acharya, Vidhi; Basa, Dilip K.; Chaudhury, S. K.

doi:10.1007/s12666-018-1396-7

Cited by 2 publications

(3 citation statements)

References 19 publications

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“…During the ECAP process, metallic materials are pressed into a die via a continuous but kinked channel. The billet to be pressed is inserted in a die while a punch is placed on the billet top ( Figure 2 A) [ 36 ]. The load is used on the punch to press the billet via a channel ( Figure 2 B) until the billet is extruded out of the die ( Figure 2 C).…”

Section: Main Spd Processesmentioning

confidence: 99%

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Biological Applications of Severely Plastically Deformed Nano-Grained Medical Devices: A Review

2021

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Metallic materials are widely used for fabricating medical implants due to their high specific strength, biocompatibility, good corrosion properties, and fatigue resistance. Recently, titanium (Ti) and its alloys, as well as stainless steel (SS), have attracted attention from researchers because of their biocompatibility properties within the human body; however, improvements in mechanical properties while keeping other beneficial properties unchanged are still required. Severe plastic deformation (SPD) is a unique process for fabricating an ultra-fine-grained (UFG) metal with micrometer- to nanometer-level grain structures. SPD methods can substantially refine grain size and represent a promising strategy for improving biological functionality and mechanical properties. This present review paper provides an overview of different SPD techniques developed to create nano-/ultra-fine-grain-structured Ti and stainless steel for improved biomedical implant applications. Furthermore, studies will be covered that have used SPD techniques to improve bone cell proliferation and function while decreasing bacterial colonization when cultured on such nano-grained metals (without resorting to antibiotic use).

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Section: Main Spd Processesmentioning

confidence: 99%

“…The intensity of the degree of the plastic deformation is dependent on the bend angle. The plastic strain generated from the lower bend angle is greater than that of the higher bend angle [ 36 ].…”

Section: Main Spd Processesmentioning

confidence: 99%

Biological Applications of Severely Plastically Deformed Nano-Grained Medical Devices: A Review

2021

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“…So far, special processing techniques of severe plastic deformation have been developed and used in order to fabricate UFG metals and alloys, including equal channel angular extrusion (ECAE) [8][9][10], high pressure torsion (HPT) [11][12][13], accumulative roll bonding (ARB) [14][15][16], twist extrusion (TE) [17][18][19], simple shear extrusion [20], severe forward extrusion (SFE) [21], and constrained groove pressing (CGP) [22][23][24]. ECAE is one of the most well developed SPD processing techniques in which the material is deformed through a die with two channels intersecting at a certain angle, which is described completely in previous reports [25,26]. This technique came into use in order to produce UFG materials with unique mechanical properties in recent years [27][28][29][30], and it can be said that among all of the SPD processing techniques, ECAE provides the opportunity to develop processing routes and invoke different slip systems very well [31].…”

Section: Introductionmentioning

confidence: 99%

Twin parallel channel angular extrusion as a development of ECAE in parallel channels

Abdi

Ebrahimi

2020

SN Appl. Sci.

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Equal Channel Angular Extrusion (ECAE) is a simple process which is suitable to deform bulk materials into extremely large strains in order to achieve ultra-fine grained (UFG) structures. However, ECAE has some limitations. In order to eliminate these shortcomings, some methods were developed including ECAE in parallel channels. In the present work, a new processing technique based on ECAE in parallel channels is introduced which is named Twin Parallel Channel Angular Extrusion. DEFORM 3D software was used to simulate and study the flow pattern during the process. In addition, the deformation of aluminum samples was conducted using this processing technique, and load-displacement curves and hardness profiles were used to confirm the validness of the simulation. The comparison of this method with the previous basic one, which is named Single Parallel Channel Angular Extrusion in this paper, was carried out. With respect to the previous method, the results show that the present one is efficient in imposing strain for more volumes of materials in addition to less energy consumption and more buckling stability of the using punch.

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Design, Fabrication of Equal Channel Angular Extrusion Process and its Effect on Microstructure and Hardness of Al and Cu Alloys

Cited by 2 publications

References 19 publications

Biological Applications of Severely Plastically Deformed Nano-Grained Medical Devices: A Review

Biological Applications of Severely Plastically Deformed Nano-Grained Medical Devices: A Review

Twin parallel channel angular extrusion as a development of ECAE in parallel channels

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