RESOURCES OF A NEW COLD UPSETTING METHOD FOR MAGNESIUM PLASTIFICATION
https://doi.org/10.17073/0021-3438-2017-1-53-60
Abstract
The study proposes a new method for the cold deformation of cast magnesium. It consists in upsetting using a under lateral pressure. The bar is first placed into a holder made of ductile material, and then into a container. The punch mounted in a container with a gap acts on the blank. Under the press force, the metal contained in the holder flows through the gap and creates a pressure. This increase the level of compressive stresses thus improving magnesium ductility. Deformation tests of cast magnesium specimens were made that showed that the nondestructive reduction of cross-sectional area could be increased from 12–18 to 60–70 %. Such an increase in ductility makes it possible to produce deformed magnesium bars without heating. The method for easier removal of bars from holders after deformation was provided. It was determined that the process could be carried out at moderate upsetting pressures of 820– 830 MPa. This is acceptable for modern tool materials.
About the Authors
B. I. Kamenetskii
Institute of Metal Physics n.a. M.N. Mikheev of Ural Branch of Russian Academy of Sciences (IMP UB RAS)
Russian Federation
Russian Federation
Cand. Sci. (Tech.), leading researcher, Laboratory of Strength,
620990, Ekaterinburg, S. Kovalevskoi str., 18
Yu. N. Loginov
Ural Federal University (UrFU) n.a. the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Dr. Sci. (Tech.), prof., Metallurgical Department,
620002, Russia, Ekaterinburg, Mira str., 19
N. A. Kruglikov
UrFU;
Institute of Metal Physics IMP UB RAS
Russian Federation
Russian Federation
Cand. Sci. (Phys.-Math.), associate prof. of the Department of physical methods of quality control;
senior researcher of the Laboratory of Strength
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Review
For citations:
Kamenetskii B.I., Loginov Yu.N., Kruglikov N.A. RESOURCES OF A NEW COLD UPSETTING METHOD FOR MAGNESIUM PLASTIFICATION. Izvestiya. Non-Ferrous Metallurgy. 2017;(1):53-60. (In Russ.) https://doi.org/10.17073/0021-3438-2017-1-53-60
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