Fatigue Properties of Ultra-Fine Grained Al-Mg-Si Wires with Enhanced Mechanical Strength and Electrical Conductivity

Metals

Georgy Raab¹  Andrey Medvedev¹  Vil Kazykhanov¹  Maxim Murashkin¹  Nariman Enikeev¹  Ivan Lomakin²  Alexander Arutyunyan²  Anton Bondarenko² 

[1] Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, 12 K. Marx st., 450008 Ufa, Russia;Laboratory for Mechanics of Bulk Nanostructured Materials, Saint Petersburg State University, 199034 Saint-Petersburg, Russia;

关键词: Al-Mg-Si alloy;    severe plastic deformation;    microstructure;    strength;    electrical conductivity;    fatigue limit;   

DOI  :  10.3390/met8121034

来源: DOAJ

【 摘 要 】

This paper focuses on the mechanical properties, electrical conductivity and fatigue performance of ultra-fine-grained (UFG) Al-Mg-Si wires processed by a complex severe plastic deformation route. It is shown that the nanostructural design via equal channel angular pressing (ECAP) Conform followed by heat treatment and cold drawing leads to the combination of enhanced tensile strength, sufficient ductility, enhanced electrical conductivity, and improved fatigue strength compared to the wires after traditional T81 thermo-mechanical treatment used in wire manufacturing. The Processing-microstructure-properties relationship in the studied material is discussed.

【 授权许可】

Unknown