Optimizing strength-ductility synergy in lightweight steel via heterogeneous design: discontinuous fibrous ferrite

Qian Cheng; Bo Yang; Chao Zhang; Xue Chen; Wuli Su; Xiaochong Lu; Jianxiong Liang; Wenquan Cao; Chongxiang Huang

doi:10.1080/21663831.2024.2406913

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Optimizing strength-ductility synergy in lightweight steel via heterogeneous design: discontinuous fibrous ferrite

Original Report | 更新时间：2026-08-19

- Optimizing strength-ductility synergy in lightweight steel via heterogeneous design: discontinuous fibrous ferrite
- Optimizing strength-ductility synergy in lightweight steel via heterogeneous design: discontinuous fibrous ferrite
- 材料研究快报（英文） 2024年12卷第12期页码：947-955
- 作者机构：
  
  1. a School of Aeronautics and Astronautics Sichuan University
  2. b Central Iron and Steel Research Institute (CISRI)
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2024.2406913
  中图分类号：
- 网络首发：2024-09-24，
  
  纸质出版：2024
- 稿件说明：
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Qian Cheng, Bo Yang, Chao Zhang, 等. Optimizing strength-ductility synergy in lightweight steel via heterogeneous design: discontinuous fibrous ferrite[J]. 材料研究快报（英文）, 2024,12(12):947-955.

Qian Cheng, Bo Yang, Chao Zhang, et al. Optimizing strength-ductility synergy in lightweight steel via heterogeneous design: discontinuous fibrous ferrite[J]. Materials Research Letters, 2024, 12(12): 947-955.
Qian Cheng, Bo Yang, Chao Zhang, 等. Optimizing strength-ductility synergy in lightweight steel via heterogeneous design: discontinuous fibrous ferrite[J]. 材料研究快报（英文）, 2024,12(12):947-955. DOI： 10.1080/21663831.2024.2406913.

Qian Cheng, Bo Yang, Chao Zhang, et al. Optimizing strength-ductility synergy in lightweight steel via heterogeneous design: discontinuous fibrous ferrite[J]. Materials Research Letters, 2024, 12(12): 947-955. DOI： 10.1080/21663831.2024.2406913.

摘要

Abstract

Disperse ferrite is generally embedded in lightweight steel

yet exhibits decent performance

thereby prompting a question: can heterogeneous design optimize it? Here

two representative structures

featured with discontinuous fibrous and dispersed ferrite separately embedded in the austenite matrix

were constructed as examples to address the issue. A heterostructure with fibrous ferrite shows a remarkable product (49 GPa·%) of ultimate strength and total elongation

standing out among other lightweight steels. Superior strength-ductility synergy is primarily attributed to hetero-deformation-induced strengthening and hardening. Abundant hetero-interactions imparted by phase boundaries

dense slip bands in austenite and dislocation networks inside ferrite serve as underlying physical mechanisms.

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相关机构

b Beijing Engineering Technology Research Center of Special Steel for Traffic and Energy

a Collaborative Innovation Center of Steel Technology University of Science and Technology Beijing Beijing People’s Republic of China

c International Center of Future Science Jilin University Changchun People’s Republic of China

a State Key Laboratory of Superhard Materials Jilin University

c International Center of Future Science Jilin University

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