Synergetic strengthening far beyond rule of mixtures in gradient structured aluminum rod

SCRIPTA MATERIALIA

卷:122

Article

Moering, Jordan¹  Ma, Xiaolong¹  Malkin, Jacob²  Yang, Muxin³  Zhu, Yuntian^1,4  Mathaudhu, Suveen⁵ 

[1] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA

[2] North Carolina Sch Sci & Math, Durham, NC USA

[3] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China

[4] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Jiangsu, Peoples R China

[5] Univ Calif Riverside, Dept Mech Engn, Riverside, CA 92505 USA

关键词: Gradient structure;    Strength and ductility;    Surface hardening;    Mechanical incompatibility;    Multiaxial stress states;   

DOI  :  10.1016/j.scriptamat.2016.05.006

来源: Elsevier

【 摘 要 】

Gradient structured metals have been reported to exhibit high strength and high ductility. Here we report that the strength of gradient structured aluminum rod is much higher than the value calculated using the rule of mixtures. The mechanical incompatibility in the gradient structured round sample produced 3D stress states, extraordinary strengthening and good ductility. An out of plane {111) wire texture was developed during the testing, which contributes to the evolution of the stress state and mechanical behavior. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

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