Belokopytov V.I. Selecting blanks for stamping forgings from pellets of aluminum alloys

Abstract

This paper presents an analytical evaluation of the degree of shear strain during stamping of blanks. Maximum values of the degree of shear strain were established in the horizontally stamped thin wall and sidewalls of the forging, which resulted in micro-discontinuities in the form of laminations in the granulated material and adversely affected mechanical properties of products. It is recommended to use extruded rectangular cross-sectional profiles as a blank for stamping. Such blanks, having a reduced level of anisotropy of strength properties, provides for a guar-anteed compliance of mechanical properties of forgings with technical requirements.

Keywords

Granulated materials, forgings, quality, mechanical properties, structure, technology.

Belokopytov Vasily Ivanovich – Ph.D. (Eng.), Associate Professor, Siberian Federal University, Krasnoyarsk, Russia. Phone: +7 (391) 294-23-28. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

1. Garibov G.S. Metallurgy of granules – the basis of the creation of advanced aircraft engines. Tekhnologiya legkikh splavov [Technology of light alloys]. 2007, no. 1, pp. 66-78.

2. Konkevich V.Yu., Lebedeva T.I. The development of material science of granulated aluminum alloys and their production technology. Tekhnologiya legkikh splavov [Technology of light alloys]. 2013, no. 4, pp. 113–123.

3. Polkin E.S. Prospects of development of pellet metallurgy of titanium alloys. Tekhnologiya legkikh splavov [Technology of light alloys]. 2011, no. 4, pp. 5–10.

4. Osintsev O.E., Konkevich V.Yu. High-strength rapidly crystallized aluminum alloys of Al – Zn – Mg and Al – Zn – Mg – Cu systems. Tekhnologiya legkikh splavov [Technology of light alloys]. 2010, no. 1, pp. 157–163.

5. Osintsev O.E., Konkevich V.Yu. On the role of main compo-nents and transition metals in high-strength rapidly crystallized Al – Zn – Mg – Cu alloys. Tekhnologiya legkikh splavov [Technology of light alloys]. 2014, no. 2, pp. 57–64.

6. Mironenko V.N. et al. Kinematics of aging of granular aluminum alloys 01969 and 01995. Tezisy dokladov II Vsesoyuznoj konferentsii po metallurgii granul [Abstracts of papers presented at the 2nd All-Union Conference on Metallurgy of Granules]. Moscow: VILS, 1987, pp. 133–134.

7. Shepelskiy N.V. et al. Optimization of stamping parameters for granular aluminum alloys based on a study of their rheological properties. Tezisy dokladov II Vsesoyuznoj konferentsii po metallurgii granul [Abstracts of papers presented at the 2nd All-Union Conference on Metallurgy of Granules]. Moscow: VILS, 1987, pp. 130–132.

8. Smirnov-Alyaev G.A., Chikidovskiy V.P. Ehksperimental'nye metody v obrabotke metallov davleniem [Experimental methods in metal forming]. Leningrad: Mechanical Engineering, 1972, 360 p.

9. Chichenev N.A., Kudrin A.B., Polukhin P.I. Metody issledovaniya protsessov obrabotki metallov davleniem [Research methods for metal forming processes]. Moscow: Metallurgy, 1977, 311 p.

10. Kolmogorov V.L. Mekhanika obrabotki metallov davleniem [Mechanics of metal forming]. Moscow: Metallurgy. 1986, 688 p.

11. Shepelskiy N.V., Kornilov V.N., Belokopytov V.I. Analytical prediction of the anisotropy of the fracture strength of compacts from spherical powders. Poroshkovaya metallurgiya [Powder metallurgy]. 1990, no. 1, pp. 62–65.