Equal Channel Angular Extrusion for Development of Advanced Metallic Alloys

Macheret, J.; Watkins, A.D.; Korth, G.E.; Lillo, T.M.; Flinn, J.E.

doi:10.4271/1999-01-2237

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…Their results indicated that the ECAE with back pressure enabled producing a sound material with significant grain refinement at nano-scale. Macheret et al [8] investigated the microstructural evolution and mechanical properties of pure copper and Alloy 5083 aluminum processed by equal ECAE. Their results suggested that the "pure" metal was prone to low temperature recrystalization after large strain hardening.…”

Section: Introductionmentioning

confidence: 99%

Microhardness Characteristics of Al-6063 Alloy Processed by Equal Channel Angular Extrusion

Nemati

Sulaiman

Baharudin

et al. 2014

AMM

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In this study, annealed AL-6063 alloy was processed by the Equal Channel Angular Extrusion (ECAE) up to 6 passes at a temperature of 200°c following route A with a constant ram speed of 30 mm/min through a die angle of 90° between the die channels. The influence of ECAE processing on the evolution of microhardness in the material was studied using Vickers microhardness testing. The detailed analysis was carried out on the samples of as-received, one, two, three, four, five, and six pass conditions. The grain diameter reduced from 45μm to 2.8 μm after 6 passes of ECAE. The results indicated around 90% increase in Microhardness after 5 passes. Hardness of the inner surface where the billet was under compression was slightly higher than that of the mid-surface.

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Section: Introductionmentioning

confidence: 99%

Microhardness Characteristics of Al-6063 Alloy Processed by Equal Channel Angular Extrusion

Nemati

Sulaiman

Baharudin

et al. 2014

AMM

View full text Add to dashboard Cite

show abstract

“…With back pressure, the ECAE enabled making a sound material which had significant grain refinement at nano-scale. The microstructural evolution and mechanical properties related to the pure copper and Alloy 5083 aluminum processed by equal ECAE was scrutinized by Macheret et al [6] revealing that the "pure" metal was prone to low temperature recrystalization afterward great strain hardening. Kommel et al [7] subjected the annealed pure copper to the ECAE reporting that the ultimate tensile strength and the microhardness of the NC copper decreased while the heat-treated NC copper acquired enhanced true tensile properties after hard cyclic deformation in the visco plastic regime.…”

Section: Introductionmentioning

confidence: 99%

Development of Microstructure and Fracture Toughness of AL-6063 Alloy Using Equal Channel Angular Extrusion

Nemati

Sulaiman

Majzoobi

et al. 2014

AMM

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Severe plastic deformation (SPD) is one of the processes used to refine the microstructure of materials. Equal Channel Angular Extrusion (ECAE) is the most common method of SPD. In this study, AL-6063grain refinement was performed using the Equal Channel Angular Extrusion method. The material was extruded up to 6 passes at a temperature of 200°C following route A. A suitable die sets equipped with heating elements alongside a thermometer was employed with the intention of extruding the material. Between the two channels, there was an angle of 90°. The results showed that the material grain average diameter decreased from 45μm to 2.8 μm after 6 passes of the ECAE. The Charpy test was used for measuring the fracture energy of various samples. The fracture toughness was the function of this energy. According to this experiment, the fracture toughness rose as the number of the ECAE process elevated. Moreover, the toughness improved for 90% after 6 passes of the ECAE process.

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Equal Channel Angular Extrusion for Development of Advanced Metallic Alloys

Cited by 2 publications

References 2 publications

Microhardness Characteristics of Al-6063 Alloy Processed by Equal Channel Angular Extrusion

Microhardness Characteristics of Al-6063 Alloy Processed by Equal Channel Angular Extrusion

Development of Microstructure and Fracture Toughness of AL-6063 Alloy Using Equal Channel Angular Extrusion

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