Investigation of microstructure characteristics of commercially pure aluminum during equal channel angular extrusion

Kim, K.J.; Yang, Dong‐Yol; Yoon, Jeong Whan

doi:10.1016/j.msea.2007.08.038

Cited by 23 publications

(3 citation statements)

References 17 publications

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“…For the samples processed by route C and route B c , the UTS increases clearly after two passes and then remains reasonably constant in the last stages with additional passes. The difference in variation trend may be attributed to the difference in mobility of dislocations, the rate of grain refinement and the dynamic recover [10][11]. For all ECAPed samples, the elongation shows the similar variation trend.…”

Section: Resultsmentioning

confidence: 88%

Mechanical Properties of Ultrafine-Grained Al Alloy for Engineering Machinery

Yang

2012

AMR

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Three groups of commercial 1050 Al alloy were subjected to equal channel angular pressing (ECAP) at room temperature using route A, route C and route Bc, respectively. Mechanical properties and fracture modes of as-annealed and ECAPed samples were investigated. The microhardness of 1050 Al fabricated by ECAP increases by a factor of about 1.5 compared to the as-annealed state. The ultimate tensile strength (UTS) increases significantly after ECAP, while the elongation decreases. But they are strongly dependence on the number of ECAP passes and the pressing route. The UTS and elongation of the samples processed by route Bc are best, consequently, the static toughness U of the samples is enhanced. Besides, all specimens subjected to ECAP deformation failed in a ductile manner.

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Section: Resultsmentioning

confidence: 88%

Mechanical Properties of Ultrafine-Grained Al Alloy for Engineering Machinery

Yang

2012

AMR

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“…564 multi-pass ECAE. Kim et al [9] studied the influences of die angle Φ and the ECAE processing route on the evolution of the microstructure of commercially pure aluminum. It was found that the grain size reduction of the material, which was processed using a die with an angle of 90°,wassignificantly more than that of a die with angle of 120°for the same numbers of ECAE.…”

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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“…With respect to the mechanisms which are responsible for the microstructural modification in these alloys, there exist a large number of studies in the bibliography such as [13][14][15], among others. Moreover, other studies can be found in which they analyze the use of several process configurations that affect the extrusion channel angle or the processing route [16], comparisons with traditional thermo-mechanical methods or variations on the original process, such as BP-ECAP (back pressure-ECAE) [17]. Nevertheless, as far as is known, the number of studies related to the change in the mechanical properties after different thermal treatments is not very high.…”

Section: Introductionmentioning

confidence: 99%

Development of Nano-Structured AA1050 by ECAE and Thermal Treatments

Luis¹,

León²,

Luri³

et al. 2011

SNL

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In this present work, a study regarding the change in the mechanical properties and in the microstructure of the aluminium alloy AA1050 is made after being processed by severe plastic deformation (SPD) with Equal Channel Angular Extrusion (ECAE). Optical and scanning electron microscopy techniques will be employed in order to determine the evolution of the microstructure after different thermal treatments, subsequent to the severe plastic deformation process. This present work involves a profound study on the change in the mechanical properties for an alloy which has a very low value of strain hardening at room temperature. With this, it is demonstrated that it is possible to improve its mechanical properties significantly with an adequate combination of ECAE processing and thermal treatments

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Investigation of microstructure characteristics of commercially pure aluminum during equal channel angular extrusion

Cited by 23 publications

References 17 publications

Mechanical Properties of Ultrafine-Grained Al Alloy for Engineering Machinery

Mechanical Properties of Ultrafine-Grained Al Alloy for Engineering Machinery

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

Development of Nano-Structured AA1050 by ECAE and Thermal Treatments

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