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

Materials Research Letters (Jun 2023)

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

Affiliations

Zhanqiu Tan: State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
Xiaowen Fu: State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
Quan Zheng: Shanghai Key Laboratory of Spacecraft Mechanism, Aerospace System Engineering Shanghai, Shanghai, People’s Republic of China
Renbang Lin: Shanghai Key Laboratory of Spacecraft Mechanism, Aerospace System Engineering Shanghai, Shanghai, People’s Republic of China
Mingliang Chen: Shanghai Key Laboratory of Spacecraft Mechanism, Aerospace System Engineering Shanghai, Shanghai, People’s Republic of China
Genlian Fan: State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
Ding-Bang Xiong: State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
Zhiqiang Li: State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China

DOI: https://doi.org/10.1080/21663831.2023.2183782
Journal volume & issue: Vol. 11, no. 6
pp. 462 – 470

Abstract

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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) bands

Published in Materials Research Letters

ISSN: 2166-3831 (Online)
Publisher: Taylor & Francis Group
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.tandfonline.com/journals/tmrl

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