Improvement of Ductility at Room Temperature of Mg-3Al-1Zn Alloy Sheets Processed by Equal Channel Angular Pressing

Suh, Joung Sik; Victoria-Hernández, José; Letzig, Dietmar; Golle, Ronland; Yi, Sangbong; Bohlen, Jan; Volk, Wolfram

doi:10.1016/j.proeng.2014.10.183

Cited by 9 publications

(3 citation statements)

References 11 publications

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“…ECAP is predominantly used on a laboratory scale and for bulk materials [9]. In order to apply the advantages of this process in automotive and largeseries industrial manufacturing, ECAP was further developed for sheet materials [10,11]. However, the material-and process-related forming temperatures must be precisely matched in order to make the best possible use of these potentials.…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for the Determination of High Temperature FLCs of ECAP-Processed Aluminum AA5083 Sheet Metal

Gruber

Leitner

Auer

et al. 2022

KEM

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In this study, investigations into the deformation behavior of aluminum AA5083 at elevated temperatures were carried out on a newly developed test rig. The test rig was developed jointly with ZwickRoell GmbH & Co. KG (Germany) and is based on a Nakajima test carried out with heated dies. In this way, statements can be made about the lightweight potential of the alloy. Additionally, equal-channel angular pressing (ECAP) was performed to process the aluminum sheet metal. The conventional ECAP process is mainly used for bulk material in laboratory use and therefore is often not suitable for many industrial applications, especially for large series. The use of sheet metal allows a significant increase in the areas of application. It is documented in conventional ECAP that grain refinement is achieved by the severe plastic deformation. At room temperature this primarily increases the mechanical strength. Formability is improved in fine-grained materials, especially at elevated temperatures, which is related to diffusion-controlled deformation mechanisms and grain boundary sliding. The advantages of ECAP for sheet materials are thus also in lightweight construction and can even optimize the use of the AA5083 alloy. ECAP-route C was used for the process to provide the most homogeneous microstructure possible (180° rotation around the ECAP-axis after the first pass). Nakajima specimens were taken from the processed sheet materials to determine the Forming Limit Curve (FLC) compared to the reference material (four different specimen geometries). FLCs under elevated temperatures (250 °C, 375 °C) were performed on the novel Nakajima test bench. A special feature of the test rig is the rapid heating to avoid microstructural changes. Microscopic examinations were performed after the deformation to study the deformation mechanisms. Differences of the forming and fracture mechanisms between the reference alloy and the ECAP material were found.

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Section: Introductionmentioning

confidence: 99%

A Novel Method for the Determination of High Temperature FLCs of ECAP-Processed Aluminum AA5083 Sheet Metal

Gruber

Leitner

Auer

et al. 2022

KEM

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“…In recent years, ECAP was attempted on a plate [102] and thin sheet [103]. However, the result on grain refinement or mechanical properties were far from satisfactory.…”

Section: Chapter 5 Effect Of Deformation and Temperature Sequences Onmentioning

confidence: 99%

“…This process is relatively easy to perform, as compared to ECAP which is sensitive to die design causing potential segmentation failure [67,157]. The tooling design is also simpler as compared to ECAP for processing of plate geometry, which is prone to buckling [103]. Although the CGP-A microstructure was fine, superplastic-like ductility was not observed at low temperature possibly due to the low thermal stability of the grains at elevated temperatures.…”

Section: Deformation Mechanism At Elevated Temperaturementioning

confidence: 99%

High toughness magnesium alloy through severe plastic deformation and short annealing

Fong¹

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This thesis represents a body of work that was achieved with the assistance, guidance and support of several people. I consider it an immense privilege to have worked with them. First of all, I would like to express my sincere gratitude to my supervisor, Prof. Tan Ming Jen for his kind guidance, critique, support and encouragement throughout my PhD study. I am also grateful to my co-supervisor and team leader, Dr Chua Beng Wah for his support, motivation and providing me with the framework and freedom in pursuing my research. It has been interesting working under their supervisions which benefited me not only in my research and also in my personal life. I am greatly thankful for all professional support and help I received from Dr Danno Atsushi in SIMTech. His tireless support at the beginning of and during my research had helped me to shape my research outcome. I am very grateful to have the opportunity to collaborate with Dr

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Effect of Equal-Channel Angular Pressing and Targeted Heat Treatment on Aluminum AA7075 Sheet Metal

Gruber

Spoerer

Illgen

et al. 2022

Characterization of Minerals, Metals, and Materials 2022

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Improvement of Ductility at Room Temperature of Mg-3Al-1Zn Alloy Sheets Processed by Equal Channel Angular Pressing

Cited by 9 publications

References 11 publications

A Novel Method for the Determination of High Temperature FLCs of ECAP-Processed Aluminum AA5083 Sheet Metal

A Novel Method for the Determination of High Temperature FLCs of ECAP-Processed Aluminum AA5083 Sheet Metal

High toughness magnesium alloy through severe plastic deformation and short annealing

Effect of Equal-Channel Angular Pressing and Targeted Heat Treatment on Aluminum AA7075 Sheet Metal

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