Probing the effect of intragranular premature κ-carbide on incipient plasticity behavior in austenite-based Fe-Mn-Al-(Cr)-C steels

Jianlei Zhang; Yuxiang Liu; Conghui Hu; Ahmed Addad; Alex Montagne; Gang Ji; Changjiang Song; Qijie Zhai

doi:10.1080/21663831.2022.2027034

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Probing the effect of intragranular premature κ-carbide on incipient plasticity behavior in austenite-based Fe-Mn-Al-(Cr)-C steels

Original Reports | 更新时间：2026-08-19

- Probing the effect of intragranular premature κ-carbide on incipient plasticity behavior in austenite-based Fe-Mn-Al-(Cr)-C steels
- Materials Research Letters Vol. 10, Issue 3, Pages: 141-148(2022)
- 作者机构：
  
  1. b State Key Laboratory of Advanced Special Steel School of Materials Science and Engineering Shanghai University Shanghai People’s Republic of China
  2. a Center for Advanced Solidification Technology (CAST) School of Materials Science and Engineering Shanghai University Shanghai People’s Republic of China
  3. b State Key Laboratory of Advanced Special Steel School of Materials Science and Engineering Shanghai University
  4. c Univ. Lille CNRS INRAE Centrale Lille UMR 8207- UMET - Unité Matériaux et Transformations
  5. d Arts et Metiers Institute of Technology MSMP HESAM Université
  6. a Center for Advanced Solidification Technology (CAST) School of Materials Science and Engineering Shanghai University
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2022.2027034
  CLC：
- Online First：31 January 2022，
  
  Published：2022
- 稿件说明：
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Jianlei Zhang, Yuxiang Liu, Conghui Hu, et al. Probing the effect of intragranular premature κ-carbide on incipient plasticity behavior in austenite-based Fe-Mn-Al-(Cr)-C steels[J]. Materials Research Letters, 2022, 10(3): 141-148.
DOI：

Jianlei Zhang, Yuxiang Liu, Conghui Hu, et al. Probing the effect of intragranular premature κ-carbide on incipient plasticity behavior in austenite-based Fe-Mn-Al-(Cr)-C steels[J]. Materials Research Letters, 2022, 10(3): 141-148. DOI： 10.1080/21663831.2022.2027034.

摘要

Abstract

The effect of nanoscale intragranular premature κ-carbide precipitates

having an ordered structure but without chemical partitioning

on the incipient plasticity behavior of austenite in Fe-Mn-Al-(Cr)-C low-density steels was investigated by nanoindentation. We found that the incipient plasticity was dominated by a heterogeneous dislocation nucleation mechanism via atom-vacancy exchange. Although the content of κ-carbide decreased with Cr addition

its negligible effect on incipient plasticity strength was witnessed by the slightly increased shear stress for dislocation nucleation. Comparatively

the increased interstitial C atoms with Cr content in austenite enhanced lattice cohesions which impeded the nucleation events by increasing the requisite shear stress.

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b National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and Engineering Harbin Institute of Technology

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