Multifunctional properties of composition graded Al wires

SCRIPTA MATERIALIA

卷:189

Article

Yang, Cui¹  Masquellier, Nicolas²  Gandiolle, Camille³  Sauvage, Xavier¹ 

[1] Normandie Univ, Grp Phys Mat, CNRS, INSA Rouen,UNIROUEN, F-76000 Rouen, France

[2] Nexans, 460 Ave Durocher Est, Montreal, PQ H1B 5H6, Canada

[3] Univ Paris Saclay, Lab Mecan Sols Struct & Mat, Cent Supelec, CNRS, F-91190 Gif Sur Yvette, France

关键词: AlMgSi alloy;    Graded material;    Mechanical strength;    Electrical conductivity;    Wire;   

DOI  :  10.1016/j.scriptamat.2020.07.052

来源: Elsevier

【 摘 要 】

The potentiality of composition graded AlMgSi wires for optimized combination of electrical conductivity and torsion strength has been investigated. Composition graded wires were obtained by co-drawing commercially pure Al with an AlMgSi alloy followed by diffusion annealing. Diffusion gradients and local hardening response to precipitation treatments were evaluated thanks to nano-indentation measurements. Resulting microstructures with spatial gradients of nanoscaled precipitates were characterized by transmission electron microscopy. Finally, it is shown that such graded structures give rise to an improved combination of electrical conductivity and mechanical strength in torsion as compared to the predictions based on a classical rule of mixture. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free