Low energy electroplasticity in aluminum alloys

Clifton H. Bumgardner; Brendan P. Croom; Ningning Song; Yunya Zhang; Xiaodong Li

doi:10.1016/j.msea.2020.140235

Low energy electroplasticity in aluminum alloys

Clifton H. Bumgardner, Brendan P. Croom, Ningning Song, Yunya Zhang, Xiaodong Li^*

^*Corresponding author for this work

University of Virginia School of Engineering and Applied Science

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

Here, we report a low energy electroplasticity event in alloyed aluminum (Al7050) at a much lower current (0.035 A/mm²) than the previously reported threshold of ~10 A/mm², leading to 10% hardness reduction and 38% creep enhancement. Ab-initio calculations unveiled a reduced energy barrier to dislocation motion with the presence of alloying elements.

Original language	English
Article number	140235
Journal	Materials Science and Engineering: A
Volume	798
DOIs	https://doi.org/10.1016/j.msea.2020.140235
Publication status	Published - 4 Nov 2020
Externally published	Yes

Keywords

Aluminum alloys
Density functional theory (DFT)
Dislocation mobility
Low energy electroplasticity
Nanoindentation

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10.1016/j.msea.2020.140235

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Bumgardner, C. H., Croom, B. P., Song, N., Zhang, Y., & Li, X. (2020). Low energy electroplasticity in aluminum alloys. Materials Science and Engineering: A, 798, Article 140235. https://doi.org/10.1016/j.msea.2020.140235

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abstract = "Here, we report a low energy electroplasticity event in alloyed aluminum (Al7050) at a much lower current (0.035 A/mm2) than the previously reported threshold of ~10 A/mm2, leading to 10% hardness reduction and 38% creep enhancement. Ab-initio calculations unveiled a reduced energy barrier to dislocation motion with the presence of alloying elements.",

keywords = "Aluminum alloys, Density functional theory (DFT), Dislocation mobility, Low energy electroplasticity, Nanoindentation",

author = "Bumgardner, {Clifton H.} and Croom, {Brendan P.} and Ningning Song and Yunya Zhang and Xiaodong Li",

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AU - Bumgardner, Clifton H.

AU - Croom, Brendan P.

AU - Song, Ningning

AU - Zhang, Yunya

AU - Li, Xiaodong

PY - 2020/11/4

Y1 - 2020/11/4

N2 - Here, we report a low energy electroplasticity event in alloyed aluminum (Al7050) at a much lower current (0.035 A/mm2) than the previously reported threshold of ~10 A/mm2, leading to 10% hardness reduction and 38% creep enhancement. Ab-initio calculations unveiled a reduced energy barrier to dislocation motion with the presence of alloying elements.

AB - Here, we report a low energy electroplasticity event in alloyed aluminum (Al7050) at a much lower current (0.035 A/mm2) than the previously reported threshold of ~10 A/mm2, leading to 10% hardness reduction and 38% creep enhancement. Ab-initio calculations unveiled a reduced energy barrier to dislocation motion with the presence of alloying elements.

KW - Aluminum alloys

KW - Density functional theory (DFT)

KW - Dislocation mobility

KW - Low energy electroplasticity

KW - Nanoindentation

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JO - Materials Science and Engineering: A

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Low energy electroplasticity in aluminum alloys

Abstract

Keywords

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