Formation of regulated nanostructures in Al alloys using severe plastic deformation processing…

aimed at:
• improving the mechanical and functional properties;                                            
• expanding the areas of innovative applications

Nature Communications (2010) Vol.1
Scripta Materialia 76 (2014)
Metals (2015) 5, pp.578-590
Light Metal Age, December 2014, pp.26-29

Ultrafine-grained aluminum alloys

The formation of an ultrafine-grained (UFG) structure in the AK4-1 aluminum  alloy of the  Al-Cu-Mg system contributes to  the fabrication of  ductile materials with a strength increased by 50%  as compared with the strength  of the coarse-grained counterpart subjected to conventional treatment. UFG alloys can be used as structural materials operating at temperatures of up to 170 С.

 

Typical structures in the UFG AK4-1 aluminum alloy with an average grain size of: (a) 200 nm; (b) 500 nm

200 нм
500 нм

Properties of the ultrafine-grained AK4-1 aluminum alloy 

 

State and billet dimensions

Ultimate tensile strength,MPa

Elongation to failure, %

Endurance limit, MPa

UFG, diameter 20 mm, length 100 mm

550 МPa

7

257

Coarse-grained

370 MPa

18

222

 

Main publications:
1.  E.  Khafizova, R.  Islamgaliev.  Effect of severe plastic deformation on the structure and mechanical properties of the aluminum Al –Cu-Mg alloy. JOP Conf. Ser.: Mater. Sci. Eng. 63 (2014) 012081.
2.  R.K.  Islamgaliev, M.A.  Nikitina, A.F.  Kamalov. Enhanced thermal stability and mechanical properties of ultrafine-grained aluminum alloy. Materials 
Science Forum. 667-669 (2011) 331-336.
3.  M.A.  Nikitina, R.K.  Islamgaliev, A.F.  Kamalov. Thermal  stability of the ultrafine-grained Al-Cu-Mg-Si alloy. Reviews on Advanced Materials Science. 25, 1 (2010) 74-81