Anharmonic effect on the thermally activated migration of {101̄2} twin interfaces in magnesium

Yuji Sato; Thomas Swinburne; Shigenobu Ogata; David Rodney

doi:10.1080/21663831.2021.1875079

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Anharmonic effect on the thermally activated migration of {101̄2} twin interfaces in magnesium

Original Reports | 更新时间：2026-08-19

- Anharmonic effect on the thermally activated migration of {101̄2} twin interfaces in magnesium
- Materials Research Letters Vol. 9, Issue 5, Pages: 231-238(2021)
- 作者机构：
  
  1. b Institut Lumière Matière Université Lyon 1 – CNRS Villeurbanne France
  2. c Department of Mechanical Engineering The University of Tokyo
  3. d CINaM Aix-Marseille Université – CNRS
  4. a Department of Mechanical Science and Bioengineering Osaka University Osaka Japan
  5. e Center for Elements Strategy Initiative for Structural Materials (ESISM) Kyoto University
  6. b Institut Lumière Matière Université Lyon 1 – CNRS
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2021.1875079
  CLC：
- Online First：27 January 2021，
  
  Published：2021
- 稿件说明：
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Yuji Sato, Thomas Swinburne, Shigenobu Ogata, et al. Anharmonic effect on the thermally activated migration of {101̄2} twin interfaces in magnesium[J]. Materials Research Letters, 2021, 9(5): 231-238.
DOI：

Yuji Sato, Thomas Swinburne, Shigenobu Ogata, et al. Anharmonic effect on the thermally activated migration of {101̄2} twin interfaces in magnesium[J]. Materials Research Letters, 2021, 9(5): 231-238. DOI： 10.1080/21663831.2021.1875079.

摘要

Abstract

BSTRACTUsing a recent linear scaling method that fully accounts for anharmonic thermal vibrations

we calculated the activation free energy for {101¯2} twin boundary migration in magnesium up to 450 K

under both resolved shear stresses and non-glide stresses resulting from

-axis tension. Comparing to direct molecular dynamics data

we show that the harmonic transition state theory unexpectedly overestimates the activation entropy above temperatures as low as 100 K

leading to underestimates of the nucleation time by many orders of magnitude. Whilst a specific interface is studied

anharmonic and non-glide effects are expected to be generally significant in thermally activated interface migration.

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a Jiangxi Key Laboratory of Advanced Copper-based Materials Institute of Applied Physics Jiangxi Academy of Sciences Nanchang People’s Republic of China

e Key Laboratory of Pressure Systems and Safety Ministry of Education School of Mechanical and Power Engineering East China University of Science and Technology

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