Atom-probe study of Cu and NiAl nanoscale precipitation and interfacial segregation in a nanoparticle-strengthened steel

Z. B. Jiao; J. H. Luan; W. Guo; J. D. Poplawsky; C. T. Liu

doi:10.1080/21663831.2017.1364675

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Atom-probe study of Cu and NiAl nanoscale precipitation and interfacial segregation in a nanoparticle-strengthened steel

Original Report | 更新时间：2026-08-19

- Atom-probe study of Cu and NiAl nanoscale precipitation and interfacial segregation in a nanoparticle-strengthened steel
- Materials Research Letters Vol. 5, Issue 8, Pages: 562-568(2017)
- 作者机构：
  
  1. Center for Advanced Structural Materials Dept. of Mechanical and Biomedical Engineering College of Science and Engineering City University of Hong Kong Hong Kong People’s Republic of China
  2. Dept. of Mechanical Engineering The Hong Kong Polytechnic University
  3. Center for Advanced Structural Materials Dept. of Mechanical and Biomedical Engineering College of Science and Engineering City University of Hong Kong
  4. Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak Ridge
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2017.1364675
  CLC：
- Online First：14 August 2017，
  
  Published：2017
- 稿件说明：
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Z. B. Jiao, J. H. Luan, W. Guo, et al. Atom-probe study of Cu and NiAl nanoscale precipitation and interfacial segregation in a nanoparticle-strengthened steel[J]. Materials Research Letters, 2017, 5(8): 562-568.
DOI：

Z. B. Jiao, J. H. Luan, W. Guo, et al. Atom-probe study of Cu and NiAl nanoscale precipitation and interfacial segregation in a nanoparticle-strengthened steel[J]. Materials Research Letters, 2017, 5(8): 562-568. DOI： 10.1080/21663831.2017.1364675.

摘要

Abstract

BSTRACTThe Cu and NiAl nanoscale precipitation and interfacial segregation in the martensite and austenite phases within a high-strength steel were studied by atom-probe tomography (APT). In the martensite phase

APT reveals the precipitation of isolated NiAl nanoparticles and NiAl/Cu co-precipitates

indicating that NiAl nanoparticles form first in the precipitation sequence. In comparison

the austenite phase contains only Cu nanoparticles with Ni segregation at the particle/matrix interface

in which the Ni segregation reduces the Cu nanoparticle interfacial energy. In addition

Mn and C exhibit an enrichment at the martensite/austenite interface

and the mechanism for the interfacial segregation was also discussed.

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Related Author

Yong Liu

C. T. Liu

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Liuliu Han

S. G. Valentin

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Related Institution

e Department of Materials Science and Engineering City University of Hong Kong

a State Key Laboratory of Powder Metallurgy Central South University

d School of Materials Science and Engineering Central South University

b Max-Planck-Institut für Eisenforschung Max-Planck-Str. 1 Düsseldorf Germany

c Center for Electron Microscopy College of Materials Science and Engineering Hunan University

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