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 journalArticlepeer-review

11 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 languageEnglish (US)
Pages (from-to)415-425
Number of pages11
JournalMaterials Research Letters
Volume5
Issue number6
DOIs
StatePublished - Nov 2 2017

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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