Strengthening Mg by self-dispersed nano-lamellar faults

William Yi Wang; Yi Wang; Shun Li Shang; Kristopher A. Darling; Hongyeun Kim; Bin Tang; Hong Chao Kou; Suveen N. Mathaudhu; Xi Dong Hui; Jin Shan Li; Laszlo J. Kecskes; Zi Kui Liu

doi:10.1080/21663831.2017.1308973

Strengthening Mg by self-dispersed nano-lamellar faults

William Yi Wang, Yi Wang, Shun Li Shang, Kristopher A. Darling, Hongyeun Kim, Bin Tang, Hong Chao Kou, Suveen N. Mathaudhu, Xi Dong Hui, Jin Shan Li, Laszlo J. Kecskes, Zi Kui Liu

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

18 Scopus citations

Abstract

Here, we show the strategies to strengthen Mg alloys through modifying the matrix by planar faults and optimizing the local lattice strain by solute atoms. The anomalous shifts of the local phonon density of state of stacking faults (SFs) and long periodic stacking-ordered structures (LPSOs) toward the high-frequency mode are revealed by HCP-FCC transformation, resulting in the increase of vibrational entropy and the decrease of free energy to stabilize the SFs and LPSOs. Through integrating bonding charge density and electronic density of states, electronic redistributions are applied to reveal the electronic basis for the ‘strengthening’ of Mg alloys.

Original language	English (US)
Pages (from-to)	415-425
Number of pages	11
Journal	Materials Research Letters
Volume	5
Issue number	6
DOIs	https://doi.org/10.1080/21663831.2017.1308973
State	Published - Nov 2 2017

All Science Journal Classification (ASJC) codes

General Materials Science

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10.1080/21663831.2017.1308973

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title = "Strengthening Mg by self-dispersed nano-lamellar faults",

abstract = "Here, we show the strategies to strengthen Mg alloys through modifying the matrix by planar faults and optimizing the local lattice strain by solute atoms. The anomalous shifts of the local phonon density of state of stacking faults (SFs) and long periodic stacking-ordered structures (LPSOs) toward the high-frequency mode are revealed by HCP-FCC transformation, resulting in the increase of vibrational entropy and the decrease of free energy to stabilize the SFs and LPSOs. Through integrating bonding charge density and electronic density of states, electronic redistributions are applied to reveal the electronic basis for the {\textquoteleft}strengthening{\textquoteright} of Mg alloys.",

author = "Wang, {William Yi} and Yi Wang and Shang, {Shun Li} and Darling, {Kristopher A.} and Hongyeun Kim and Bin Tang and Kou, {Hong Chao} and Mathaudhu, {Suveen N.} and Hui, {Xi Dong} and Li, {Jin Shan} and Kecskes, {Laszlo J.} and Liu, {Zi Kui}",

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doi = "10.1080/21663831.2017.1308973",

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AU - Wang, William Yi

AU - Wang, Yi

AU - Shang, Shun Li

AU - Darling, Kristopher A.

AU - Kim, Hongyeun

AU - Tang, Bin

AU - Kou, Hong Chao

AU - Mathaudhu, Suveen N.

AU - Hui, Xi Dong

AU - Li, Jin Shan

AU - Kecskes, Laszlo J.

AU - Liu, Zi Kui

PY - 2017/11/2

Y1 - 2017/11/2

N2 - Here, we show the strategies to strengthen Mg alloys through modifying the matrix by planar faults and optimizing the local lattice strain by solute atoms. The anomalous shifts of the local phonon density of state of stacking faults (SFs) and long periodic stacking-ordered structures (LPSOs) toward the high-frequency mode are revealed by HCP-FCC transformation, resulting in the increase of vibrational entropy and the decrease of free energy to stabilize the SFs and LPSOs. Through integrating bonding charge density and electronic density of states, electronic redistributions are applied to reveal the electronic basis for the ‘strengthening’ of Mg alloys.

AB - Here, we show the strategies to strengthen Mg alloys through modifying the matrix by planar faults and optimizing the local lattice strain by solute atoms. The anomalous shifts of the local phonon density of state of stacking faults (SFs) and long periodic stacking-ordered structures (LPSOs) toward the high-frequency mode are revealed by HCP-FCC transformation, resulting in the increase of vibrational entropy and the decrease of free energy to stabilize the SFs and LPSOs. Through integrating bonding charge density and electronic density of states, electronic redistributions are applied to reveal the electronic basis for the ‘strengthening’ of Mg alloys.

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Strengthening Mg by self-dispersed nano-lamellar faults

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