Direct observation of dislocation motion in the complex alloy T-Al-Mn-Fe using in-situ transmission electron microscopy

Marc Heggen; Michael Feuerbacher; Rafal E. Dunin-Borkowski

doi:10.1080/21663831.2022.2155492

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Direct observation of dislocation motion in the complex alloy T-Al-Mn-Fe using in-situ transmission electron microscopy

Original Reports | 更新时间：2026-08-19

- Direct observation of dislocation motion in the complex alloy T-Al-Mn-Fe using in-situ transmission electron microscopy
- Direct observation of dislocation motion in the complex alloy T-Al-Mn-Fe using in-situ transmission electron microscopy
- 材料研究快报（英文） 2023年11卷第5期页码：367-373
- 作者机构：
  
  Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons Forschungszentrum Jülich GmbH
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2022.2155492
  中图分类号：
- 网络首发：2022-12-14，
  
  纸质出版：2023
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Marc Heggen, Michael Feuerbacher, Rafal E. Dunin-Borkowski. Direct observation of dislocation motion in the complex alloy T-Al-Mn-Fe using in-situ transmission electron microscopy[J]. 材料研究快报（英文）, 2023,11(5):367-373.

Marc Heggen, Michael Feuerbacher, Rafal E. Dunin-Borkowski. Direct observation of dislocation motion in the complex alloy T-Al-Mn-Fe using in-situ transmission electron microscopy[J]. Materials Research Letters, 2023, 11(5): 367-373.
Marc Heggen, Michael Feuerbacher, Rafal E. Dunin-Borkowski. Direct observation of dislocation motion in the complex alloy T-Al-Mn-Fe using in-situ transmission electron microscopy[J]. 材料研究快报（英文）, 2023,11(5):367-373. DOI： 10.1080/21663831.2022.2155492.

Marc Heggen, Michael Feuerbacher, Rafal E. Dunin-Borkowski. Direct observation of dislocation motion in the complex alloy T-Al-Mn-Fe using in-situ transmission electron microscopy[J]. Materials Research Letters, 2023, 11(5): 367-373. DOI： 10.1080/21663831.2022.2155492.

摘要

Abstract

BSTRACTMetadislocations are novel defects recently identified in complex metallic alloys. It was reasoned that their propagation necessarily requires the orchestrated motion of hundreds of atoms along various crystallographic directions per elementary step. Here

we report on the direct observation of the motion of metadislocations on the atomic scale in the complex metallic alloy phase T-Al-Mn-Fe

using in-situ high-resolution transmission electron microscopy. We observe their propagation by discrete jumps between low-energy configurations. Using a tiling model

we determine their characteristic features including the Burgers vector

and identify their motion to take place in a mixed glide/climb process.

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references

Feuerbacher M, Heggen M. Chapter 94 Metadislocations. In: Hirth JP, Kubin L, editor. Dislocations in solids [internet]. Elsevier; 2010 [cited 2022 Aug 18]. p. 109–170. Available from: https://www.sciencedirect.com/science/article/pii/S1572485909016039(open in a new window). (Open in a new window)Google Scholar

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