2618 aluminum round bar stock for sale

The 2618 aluminum alloy heat-resistant aluminum alloy belongs to the Al-Cu-Mg-Ni series alloy, which is a heat-treatable alloy. The main strengthening elements are Cu and Mg, in addition to the main alloying elements Fe, Ni and trace elements of Si and Ti. Because the main strengthening phase in this series of alloys is S (CuMgAl) phase. The S phase is very stable at high temperatures and has a low aggregation tendency, which can make the alloy have better heat resistance. Therefore, in order to improve the heat resistance of this series of alloys, it is necessary to strive to maximize the number of S phases.



2618 aluminum round bar stock for sale chemical composition; (%)
Si; 0.10-0.25 Fe; 0.9-1.3 Cu; 1.9-2.7 Mn; / Mg; 1.3-1.8
Cr; /Ni; 0.9-1.2 Zn; 0.10 V; / Ti; 0.04-0.10 others; margin
2618 aluminum round bar stock for sale use;
2618 heat-resistant aluminum alloy is widely used in the manufacture of parts for aero engines and automobile industry;
(1) Compared with the T6 2618 alloy, the S′ phase in the 2618 alloy structure after thermomechanical treatment is significantly refined, but no dislocation entangled substructure or dislocation network is observed in the 2618 alloy structure after thermomechanical treatment. .
(2) The width of the precipitation-free zone (PFZ) in the structure of the 2618 alloy after thermomechanical treatment is narrowed, and the lean vacancy mechanism can better explain the change of the precipitation-free zone before and after thermomechanical treatment.
(3) A large number of dislocations produced by cold deformation will significantly increase the number of nucleation cores of S'phase in the 2618 alloy structure, and make the aging precipitated phase S'disperse uniformly in the alloy matrix structure.