Effect of Intensive Plastic Deformation on Microstructure and Mechanical Properties of Aluminum Alloys

7th International Scientific Practical Conference "Innovative Technologies in Engineering"

Rakhadilov, Bauyrzhan^1 ; Uazyrkhanova, Gulzhaz^1 ; Myakinin, Alexandr^1 ; Uazyrkhanova, Zhuldyz^1

D.Serikbayev East Kazakhstan State Technical University, Serikbayev Str., 19, Ust-Kamenogorsk

070010, Kazakhstan^1

关键词: Accumulated strain;    Defect-free;    Equal channel angular extrusion;    Initial state;    Intensive plastic deformation;    Intersection angles;    Mass loss;    Microstructure and mechanical properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/142/1/012035/pdf
DOI  :  10.1088/1757-899X/142/1/012035

来源: IOP

【 摘 要 】

In work it was studied the influence of intensive plastic deformation on structure and mechanical properties of aluminum alloys. Intensive plastic deformation was carried out by using equal-channel angular extrusion. It is shown that the most efficient angle of intersection of the channels is the angle of Φ=120°, which ensures defect-free parts at the highest possible level of accumulated strain (e=8). It is established that the intensive milling grain structures in aluminum alloys AMG6 and AMC occurs at ECAE-12 passes, while the intersection angle of the channels of 120°. After ECAE-12 in aluminum alloys the grain refinement reaches to the size of ∼1.0-1.5 gm. It is determined that as a result of equal channel angular pressing, the microhardness of alloy AMG6 increases almost 4 times in comparison with the initial state, the microhardness of alloy AMC increases by almost 4.5 times in comparison with the initial state. It is shown that ECAE-12 mass loss is reduced to 5.4 and 5.6 mg, which shows an increase in wear-resistance of aluminum alloys AMG6 and AMC 13-14 %.