Toward strength-ductility synergy in trimodal grain structured metal composites by actively tuning coarse domains

Zhanqiu Tan; Xiaowen Fu; Quan Zheng; Renbang Lin; Mingliang Chen; Genlian Fan; Ding-Bang Xiong; Zhiqiang Li

doi:10.1080/21663831.2023.2183782

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Toward strength-ductility synergy in trimodal grain structured metal composites by actively tuning coarse domains

Original Reports | 更新时间：2026-08-19

- Toward strength-ductility synergy in trimodal grain structured metal composites by actively tuning coarse domains
- Materials Research Letters Vol. 11, Issue 6, Pages: 462-470(2023)
- 作者机构：
  
  1. a State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University
  2. b Shanghai Key Laboratory of Spacecraft Mechanism Aerospace System Engineering Shanghai
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2023.2183782
  CLC：
- Online First：02 March 2023，
  
  Published：2023
- 稿件说明：
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Zhanqiu Tan, Xiaowen Fu, Quan Zheng, et al. Toward strength-ductility synergy in trimodal grain structured metal composites by actively tuning coarse domains[J]. Materials Research Letters, 2023, 11(6): 462-470.
DOI：

Zhanqiu Tan, Xiaowen Fu, Quan Zheng, et al. Toward strength-ductility synergy in trimodal grain structured metal composites by actively tuning coarse domains[J]. Materials Research Letters, 2023, 11(6): 462-470. DOI： 10.1080/21663831.2023.2183782.

摘要

Abstract

Trimodal grain structure was effective to balance the strength-ductility trade-off in ultrafine-grained metals

but the relationship between microstructures and mechanical performance is unclear. Here the dimension of coarse grain (CG) domains was elaborately tuned in the trimodal CNT/2024Al composites

and an excellent strength-ductility combination (Tensile strength: 716 ± 5 MPa

Elongation: 9.1 ± 0.3%) was achieved by optimizing the CG bands (∼4.4 µm in width). We found that the size of CG bands hardly affected strain hardening rate

but caused different crack-blunting behaviors

which was responsible for the superior strength-ductility synergy. This work highlights the importance of CG domains design in heterostructured materials.Trimodal grain structured CNT/2024Al composites with different coarse-grained (CG) band

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Related Institution

c School of Mechanical & Aerospace Engineering Nanyang Technological University

a Institute of Metallic Materials and Intelligent Manufacturing School of Metallic Materials and Advanced Manufacturing Soochow University

b College of Materials Science and Engineering Beijing University of Technology

a Institute of Metallic Materials and Intelligent Manufacturing School of Metallic Materials and Advanced Manufacturing Soochow University Suzhou People’s Republic of China

c College of Materials and Chemistry China Jiliang University

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