Mechanical properties and electrical conductivity of Al 6101 and 6201 alloys processed by hydro-extrusion

6th International Conference on Nanomaterials by Severe Plastic Deformation

材料科学;化学

Pakiela, Z.^1 ; Ludwichowska, K.^1 ; Ferenc, J.^1 ; Kulczyk, M.^2

Warsaw University of Technology, Faculty of Materials Science and Engineering, Woloska 141, 02-507 Warsaw, Poland^1

Institute of High Pressure Physics, Polish Academy of Sciences, Al. Prymasa Tysiaclecia 98, 01-424 Warsaw, Poland^2

关键词: Electrical conductivity;    Grain size refinement;    High strength;    Hydroextrusion;    Hydrostatic extrusions;    Microstructure analysis;    Severe plastic deformations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/63/1/012120/pdf
DOI  :  10.1088/1757-899X/63/1/012120

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The aim of this work was to produce a material with high strength and electrical conductivity. Two aluminium alloys: Al 6101 and 6201 were used for investigation. Improvement of mechanical properties was obtained by severe plastic deformation, using Hydrostatic Extrusion (HE). To examine mechanical properties of the materials microhardness and tensile tests were carried out. Furthermore, the microstructure analysis was carried out using TEM and light microscopy. Electrical conductivity of materials was measured by 4-wire method. It was found that in the material processed by HE tensile strength and microhardness increased about twice. The biggest strength of 356 MPa was obtained for alloy 6201 after HE. In this case the reduction of a diameters from 20 to 5 mm was used. Examination of the microstructure revealed that as a result of HE grain size refinement to 0.5 micrometer occurred. It was also found that the material has the electric conductivity of about 52% IACS.