Route Effect on Equal Channel Angular Pressing of Copper Tube

Djavanroodi, F.; Zolfaghari, Ali Asghar; Ebrahimi, Mahmoud; Nikbin, Kamran

doi:10.1007/s40195-014-0028-4

Cited by 27 publications

(18 citation statements)

References 25 publications

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“…[110] ECAP (New design1) [111] ECAP (New design2) [112] Modified ECAP [113] ECAP for processing of tubular samples [114,115] Non-equal channel angular pressing / channel angular deformation (CAD) [116,117] Double change channel angular pressing [118] Incremental Angular Splitting [119] Large strain machining [120,79] Tubular channel angular pressing (TCAP)…”

Section: Summery and Conclusionmentioning

confidence: 99%

An overview on severe plastic deformation: research status, techniques classification, microstructure evolution, and applications

Bagherpour

Pardis

Reihanian

et al. 2018

Int J Adv Manuf Technol

120

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The present overview gives a new approach toward developments and recent achievements in severe plastic deformation. The review focuses on several subjects. First, an outline of SPD research status in the world is presented by literature analysis based on the total number of publications, citations and the contribution of the topranked countries. Second, the mechanisms of grain refinement and grain growth during SPD processing are discussed by means of the latest concepts. Third, all SPD methods invented so far are classified based on a new approach. Up to now, the growing tendency of researchers to introduce new SPD techniques results in a large number of SPD methods which can be considered as new or modified techniques or a combination of previous ones. Such a reference can help to prevent the future duplication to introduce the SPD processes, which are technically similar. At the end, the practical applications of ultrafine/nanostructured materials and industrial commercialization of SPD methods are summarized.

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Section: Summery and Conclusionmentioning

confidence: 99%

An overview on severe plastic deformation: research status, techniques classification, microstructure evolution, and applications

Bagherpour

Pardis

Reihanian

et al. 2018

Int J Adv Manuf Technol

120

View full text Add to dashboard Cite

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“…It has gained much attention due to the simplicity of die design and manufacturing, as well as low cost. This method has been widely applied on different materials [5][6][7]. Many researchers investigated the effect of ECAP on the mechanical properties of various metals [8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Effect of Equal Channel Angular Pressing (ECAP) on Erosion-Corrosion of Pure Copper

et al. 2017

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Abstract:During the past few decades, ultrafine-grained materials (UFG) have experienced rapid development. Enhanced mechanical and surface properties, such as strength, ductility and erosioncorrosion (E-C) resistance by refining the grain to ultra-fine/nanometer size has been achieved. The equal channel angular pressing (ECAP) is a popular severe plastic deformation (SPD) method to fabricate UFG bulk materials. In this research, the E-C behavior of commercial annealed pure copper subject to four passes of ECAP have been investigated. Hardness measurement of the copper specimen after four passes of ECAP showed an increase of 200% on the hardness value as compared with annealed condition. Simulated seawater was used as an E-C medium. The effect of different E-C parameters such as time, slurry flow velocity, impact angle, and solid particle concentration on ECAP process is studied. The results showed that ECAP enhances the E-C resistance of copper, and this behavior improves with increasing the pass number. Generally, a 30% rise in resistance to E-C was achieved after four ECAP passes as compared to coarse grain copper for the parameters studied in this work. Optical microscopy was used to examine the microstructure and material removal mechanism of the annealed copper. Scanning electron microscopy (SEM) was used to validate the reduction of grain size due to ECAP process. Furthermore, examination of the surface roughness of the copper at different ECAP passes showed that for the same E-C condition the increment of ECAP passes leads to a smoother surface.

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“…It is known that grain size is a key microstructural factor affecting physical and mechanical properties of materials [2]. Grain refinement can increase the strength as it improves toughness of the metals [3,4]. Therefore, grain refinement has been attracting considerable leaning from material engineering science [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Formation of Nano/Ultrafine Grains in AISI 321 Stainless Steel Using Advanced Thermo-Mechanical Process

Shahri

Hosseini

Salehi

2015

Acta Metall. Sin. (Engl. Lett.)

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Production of nano/ultrafine grains through deformation-induced martensite formation and its reversion to austenite in an AISI 321 stainless steel was studied. The repetitive cold rolling and subsequent annealing were conducted to obtain nanocrystalline structure. Heavy cold rolling (90% reduction) at ?20 and-20°C was carried out to induce the formation of a 9-martensite from metastable austenitic material. The process was followed by annealing treatment at 700-900°C for 0.5-30 min. Effects of process parameters, i.e., ''reduction percentage,'' ''rolling temperature,'' ''annealing temperature'' and ''annealing time'', on the microstructural development were considered. Microstructural evolutions were conducted using feritscope, X-ray diffractometer and scanning electron microscope. Hardness of the specimens was measured by Vickers method. Results revealed that the higher thickness reduction and lower rolling temperature provided more martensite volume fraction and further hardness. X-ray diffraction patterns and feritoscopic results indicated that saturated strain (e s) was reduced from 2.3 to 0.9 when temperature declined from ?20 to-20°C. The smallest grain size (about 70 nm) was achieved in the condition of cold rolling at-20°C followed by annealing at 750°C for 5 min.

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Route Effect on Equal Channel Angular Pressing of Copper Tube

Cited by 27 publications

References 25 publications

An overview on severe plastic deformation: research status, techniques classification, microstructure evolution, and applications

An overview on severe plastic deformation: research status, techniques classification, microstructure evolution, and applications

Effect of Equal Channel Angular Pressing (ECAP) on Erosion-Corrosion of Pure Copper

Formation of Nano/Ultrafine Grains in AISI 321 Stainless Steel Using Advanced Thermo-Mechanical Process

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