Towards understanding the structure-property relationships of heterogeneous-structured materials

SCRIPTA MATERIALIA

卷:186

Article

Li, Jianguo¹  Zhang, Qian¹  Huang, Ruirui¹  Li, Xiaoyan¹  Gao, Huajian^2,3 

[1] Tsinghua Univ, Ctr Adv Mech & Mat, Dept Engn Mech, Appl Mech Lab, Beijing 100084, Peoples R China

[2] Nanyang Technol Univ, Coll Engn, Sch Mech & Aerosp Engn, 70 Nanyang Dr, Singapore 639798, Singapore

[3] ASTAR, Inst High Performance Comp, Singapore 138632, Singapore

关键词: Heterogeneous-structured materials;    Structural heterogeneity;    Strain gradient plasticity;    Geometrically necessary dislocations;    Back stress;   

DOI  :  10.1016/j.scriptamat.2020.05.013

来源: Elsevier

【 摘 要 】

Heterogeneous-structured materials are a new class of metallic materials that have recently emerged due to development of advanced processing and structural/architectural design techniques. These materials are made of heterogeneous domains having different constitutive behaviors and achieve superior mechanical properties, such as extra strengthening and work hardening, that are not accessible to conventional homogeneous-structured materials. Here we review recent experimental, theoretical and computational studies on microstructures, mechanical properties and deformation behaviors of heterogeneousstructured metals/alloys, highlighting the relationships between structural heterogeneity and mechanical property improvements, as well as some perspectives towards achieving fundamental understanding of plastic deformation based on strain gradient theory. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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