Microstructure features and mechanical properties of a UFG Al-Mg-Si alloy produced via SPD

6th International Conference on Nanomaterials by Severe Plastic Deformation

材料科学;化学

Bobruk, E.^1,2 ; Sabirov, I.^3 ; Kazykhanov, V.^1 ; Valiev, R.^1,2 ; Murashkin, M.^1,2

Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, K. Marx str. 12, Ufa 45000, Russia^1

Laboratory for Mechanics of Bulk Nanostructured Materials, Saint Petersburg State University, Universitetsky pr. 28, Peterhof, 198504, Saint Petersburg, Russia^2

IMDEA Materials Institute, Calle Eric Kandel 2, Getafe, 28906, Madrid, Spain^3

关键词: Al-Mg-Si alloys;    Artificial ageing;    Artificial aging;    Commercial aluminum alloys;    Parallel channel;    Solution treatments;    Thermo-mechanical processing;    Ultimate tensile strength;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/63/1/012116/pdf
DOI  :  10.1088/1757-899X/63/1/012116

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The effect of equal channel angular pressing in parallel channels (ECAP-PC) and subsequient artificial ageing on the microstructure and room temperature mechanical properties of the commercial aluminum alloys 6063 (Al-0.6Mg-0.5Si, wt.%) and 6010 (Al-0.8Mg-1.0Si-0.15Cu-0.25Mn, wt.%) was investigated. It was shown that mechanical strength of the ECAP-PC processed Al alloys is higher compared to that achieved in these alloys after conventional thermo-mechanical processing. Prior ECAP- PC solution treatment and post-ECAP-PC artificial aging can additionally increase the mechanical strength of both Al alloys. Under optimal artificial ageing conditions, the yield strength (YS) of 299 MPa and ultimate tensile strength (UTS) of 308 MPa was achieved in the 6063 alloy, whereas YS of 423 MPa and UTS of 436 MPa was achieved in the 6010 alloy.