Uncovering the mechanism of dislocation interaction with nanoscale (<4 nm) interphase precipitates in microalloyed ferritic steels

Elena Pereloma; David Cortie; Navjeet Singh; Gilberto Casillas; Frank Niessen

doi:10.1080/21663831.2020.1764121

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Uncovering the mechanism of dislocation interaction with nanoscale (<4 nm) interphase precipitates in microalloyed ferritic steels

Reports | 更新时间：2026-08-19

- Uncovering the mechanism of dislocation interaction with nanoscale (<4 nm) interphase precipitates in microalloyed ferritic steels
- Uncovering the mechanism of dislocation interaction with nanoscale (<4 nm) interphase precipitates in microalloyed ferritic steels
- 材料研究快报（英文） 2020年8卷第9期页码：341-347
- 作者机构：
  
  1. ARC Research Hub for Australian Steel Manufacturing University of Wollongong Wollongong NSW Australia
  2. Institute for Superconducting and Electronic Materials Australian Institute for Innovative Materials University of Wollongong Wollongong
  3. ARC Research Hub for Australian Steel Manufacturing University of Wollongong Wollongong
  4. Electron Microscopy Centre University of Wollongong Wollongong
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2020.1764121
  中图分类号：
- 网络首发：2020-05-19，
  
  纸质出版：2020
- 稿件说明：
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Elena Pereloma, David Cortie, Navjeet Singh, 等. Uncovering the mechanism of dislocation interaction with nanoscale (<4 nm) interphase precipitates in microalloyed ferritic steels[J]. 材料研究快报（英文）, 2020,8(9):341-347.

Elena Pereloma, David Cortie, Navjeet Singh, et al. Uncovering the mechanism of dislocation interaction with nanoscale (<4 nm) interphase precipitates in microalloyed ferritic steels[J]. Materials Research Letters, 2020, 8(9): 341-347.
Elena Pereloma, David Cortie, Navjeet Singh, 等. Uncovering the mechanism of dislocation interaction with nanoscale (<4 nm) interphase precipitates in microalloyed ferritic steels[J]. 材料研究快报（英文）, 2020,8(9):341-347. DOI： 10.1080/21663831.2020.1764121.

Elena Pereloma, David Cortie, Navjeet Singh, et al. Uncovering the mechanism of dislocation interaction with nanoscale (<4 nm) interphase precipitates in microalloyed ferritic steels[J]. Materials Research Letters, 2020, 8(9): 341-347. DOI： 10.1080/21663831.2020.1764121.

摘要

Abstract

BSTRACTNanoscale interphase precipitation in microalloyed ferritic steels provides a remarkable (200–400 MPa) strengthening increment

however its origin is unclear. Scanning transmission electron microscopy revealed step formation at the matrix/precipitate interface after both macroscopic uniaxial tension and nanopillar compression testing. Supported by Density Functional Theory modelling

dislocation shearing of nano-sized (4 nm) VC precipitates was identified as a strengthening mechanism. The findings suggest the operation of an unusual {001}110 slip–system in the VC nanoparticles.

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相关机构

a State Key Laboratory of Metal Matrix Composites School of Material Science and Engineering Shanghai Jiao Tong University

b School of Mechanical Electrical and Information Engineering Shandong University at Weihai

Department of Mechanical and Biomedical Engineering City University of Hong Kong

Center for Advanced Nuclear Safety and Sustainable Development City University of Hong Kong

Department of Material Science and Engineering Xiamen University

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