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Metallurgical and Materials Transactions A

Erschienen in:

20.10.2016

Evaluation of the Athermal Effect of Electric Pulsing on the Recovery Behavior of Magnesium Alloy

verfasst von: Se-Jong Kim, Sung-Dae Kim, Donghoon Yoo, Jinwoo Lee, Youngmok Rhyim, Daeyong Kim

Erschienen in: Metallurgical and Materials Transactions A | Ausgabe 12/2016

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Abstract

It is still unclear whether the effects of the electric current on the mechanical behavior can be attributed exclusively to Joule heating. To evaluate athermal effect of electropulsing on recovery, we compared mechanical behavior, dislocation density, and hardness of a pre-tensioned magnesium alloy after treatment of electric pulses (EP) and annealing in an oil bath. The analysis reveals that the athermal effect of EP on the recovery is not clearly identified under a given set of conditions in this study, although EP treatment appears more efficient than conventional heat treatment. This is further supported by the in situ transmission electron microscopy results that little dislocation rearrangement was observed even during the high current density of 4000 A/mm² as long as temperature remains low.

Vorheriger Artikel Effect of Current Pathways During Spark Plasma Sintering of an Aluminum Alloy Powder

Nächster Artikel Effect of Temperature and Velocity of Pressing on Grain Refinement in AA5083 Aluminum Alloy During Repetitive Corrugation and Straightening Process

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Titel: Evaluation of the Athermal Effect of Electric Pulsing on the Recovery Behavior of Magnesium Alloy
verfasst von: Se-Jong Kim
Sung-Dae Kim
Donghoon Yoo
Jinwoo Lee
Youngmok Rhyim
Daeyong Kim
Publikationsdatum: 20.10.2016
Verlag: Springer US
Erschienen in: Metallurgical and Materials Transactions A / Ausgabe 12/2016
Print ISSN: 1073-5623
Elektronische ISSN: 1543-1940
DOI: https://doi.org/10.1007/s11661-016-3804-0

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