Combined effects of source hardening and activation of new slip systems on simultaneous enhancement of strength and ductility in fine-grained Mg-3Gd alloy

X. Luo, Guilin Wu, Zongqiang Feng, Junqian Luo, Tianbo Yu, Tianlin Huang, Niels Hansen, Xiaoxu Huang*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Abstract

Yield point phenomenon often occurs in fine-grained and ultrafine-grained fcc and bcc metals, which causes a sharp increase in yield stress by source hardening but a rapid decrease in ductility due to the limited work hardening capacity. Here we report that an occurrence of yield point phenomenon in a fine-grained Mg-3Gd alloy can increase the yield stress to a level that facilities the activation of <c+a> type dislocations and their interactions with <a> type dislocations. As a result, not only the yield stress but also the tensile ductility are improved that suggests a new strategy overcoming the conventional strength-ductility trade-off.
Original languageEnglish
Title of host publicationProceedings of the 40th Risø International Symposium on Materials Science: Metal Microstructures in 2D, 3D and 4D
Number of pages6
PublisherDTU Mechanical Engineering
Publication date2019
Publication statusPublished - 2019
Event40th Risø International Symposium on Material Science: Metal Microstructures in 2D, 3D, and 4D - Roskilde, Denmark
Duration: 2 Sep 20196 Sep 2019

Conference

Conference40th Risø International Symposium on Material Science: Metal Microstructures in 2D, 3D, and 4D
CountryDenmark
CityRoskilde
Period02/09/201906/09/2019

Cite this

Luo, X., Wu, G., Feng, Z., Luo, J., Yu, T., Huang, T., ... Huang, X. (2019). Combined effects of source hardening and activation of new slip systems on simultaneous enhancement of strength and ductility in fine-grained Mg-3Gd alloy. In Proceedings of the 40th Risø International Symposium on Materials Science: Metal Microstructures in 2D, 3D and 4D DTU Mechanical Engineering.
Luo, X. ; Wu, Guilin ; Feng, Zongqiang ; Luo, Junqian ; Yu, Tianbo ; Huang, Tianlin ; Hansen, Niels ; Huang, Xiaoxu. / Combined effects of source hardening and activation of new slip systems on simultaneous enhancement of strength and ductility in fine-grained Mg-3Gd alloy. Proceedings of the 40th Risø International Symposium on Materials Science: Metal Microstructures in 2D, 3D and 4D. DTU Mechanical Engineering, 2019.
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title = "Combined effects of source hardening and activation of new slip systems on simultaneous enhancement of strength and ductility in fine-grained Mg-3Gd alloy",
abstract = "Yield point phenomenon often occurs in fine-grained and ultrafine-grained fcc and bcc metals, which causes a sharp increase in yield stress by source hardening but a rapid decrease in ductility due to the limited work hardening capacity. Here we report that an occurrence of yield point phenomenon in a fine-grained Mg-3Gd alloy can increase the yield stress to a level that facilities the activation of type dislocations and their interactions with type dislocations. As a result, not only the yield stress but also the tensile ductility are improved that suggests a new strategy overcoming the conventional strength-ductility trade-off.",
author = "X. Luo and Guilin Wu and Zongqiang Feng and Junqian Luo and Tianbo Yu and Tianlin Huang and Niels Hansen and Xiaoxu Huang",
year = "2019",
language = "English",
booktitle = "Proceedings of the 40th Ris{\o} International Symposium on Materials Science: Metal Microstructures in 2D, 3D and 4D",
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Luo, X, Wu, G, Feng, Z, Luo, J, Yu, T, Huang, T, Hansen, N & Huang, X 2019, Combined effects of source hardening and activation of new slip systems on simultaneous enhancement of strength and ductility in fine-grained Mg-3Gd alloy. in Proceedings of the 40th Risø International Symposium on Materials Science: Metal Microstructures in 2D, 3D and 4D. DTU Mechanical Engineering, 40th Risø International Symposium on Material Science: Metal Microstructures in 2D, 3D, and 4D, Roskilde, Denmark, 02/09/2019.

Combined effects of source hardening and activation of new slip systems on simultaneous enhancement of strength and ductility in fine-grained Mg-3Gd alloy. / Luo, X.; Wu, Guilin; Feng, Zongqiang; Luo, Junqian; Yu, Tianbo; Huang, Tianlin; Hansen, Niels; Huang, Xiaoxu.

Proceedings of the 40th Risø International Symposium on Materials Science: Metal Microstructures in 2D, 3D and 4D. DTU Mechanical Engineering, 2019.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

TY - GEN

T1 - Combined effects of source hardening and activation of new slip systems on simultaneous enhancement of strength and ductility in fine-grained Mg-3Gd alloy

AU - Luo, X.

AU - Wu, Guilin

AU - Feng, Zongqiang

AU - Luo, Junqian

AU - Yu, Tianbo

AU - Huang, Tianlin

AU - Hansen, Niels

AU - Huang, Xiaoxu

PY - 2019

Y1 - 2019

N2 - Yield point phenomenon often occurs in fine-grained and ultrafine-grained fcc and bcc metals, which causes a sharp increase in yield stress by source hardening but a rapid decrease in ductility due to the limited work hardening capacity. Here we report that an occurrence of yield point phenomenon in a fine-grained Mg-3Gd alloy can increase the yield stress to a level that facilities the activation of type dislocations and their interactions with type dislocations. As a result, not only the yield stress but also the tensile ductility are improved that suggests a new strategy overcoming the conventional strength-ductility trade-off.

AB - Yield point phenomenon often occurs in fine-grained and ultrafine-grained fcc and bcc metals, which causes a sharp increase in yield stress by source hardening but a rapid decrease in ductility due to the limited work hardening capacity. Here we report that an occurrence of yield point phenomenon in a fine-grained Mg-3Gd alloy can increase the yield stress to a level that facilities the activation of type dislocations and their interactions with type dislocations. As a result, not only the yield stress but also the tensile ductility are improved that suggests a new strategy overcoming the conventional strength-ductility trade-off.

M3 - Article in proceedings

BT - Proceedings of the 40th Risø International Symposium on Materials Science: Metal Microstructures in 2D, 3D and 4D

PB - DTU Mechanical Engineering

ER -

Luo X, Wu G, Feng Z, Luo J, Yu T, Huang T et al. Combined effects of source hardening and activation of new slip systems on simultaneous enhancement of strength and ductility in fine-grained Mg-3Gd alloy. In Proceedings of the 40th Risø International Symposium on Materials Science: Metal Microstructures in 2D, 3D and 4D. DTU Mechanical Engineering. 2019