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Registration Number

0220U102634, 0119U002824 , R & D reports

Title

Research on the effect of the mikro and macrostructure, degassing and mechanical properties (tensile strength and elongation) by current treatment in 3 kg melt of 7075 alloy

Head

Tsurkin Volodymyr M., Кандидат технічних наук

Registration Date

14-04-2020

Organization

Institute of Impulse Processes and Technologies

Description

The purpose of the study is to investigate the effects of micro- and macrostructure, degassing and mechanical properties (tensile strength and elongation) in the melt treatment of 3 kg of alloy 7075. The object of study is an aluminum alloy of the Al-Zn-Mg-Cu system. The method of research was a physical experiment. The effect of liquid-phase impulse treatment of an alloy by electric current on the structure and properties of a cast alloy was investigated. The results show that pulsed electric current melt processing of the alloy of the Al-Zn-Mg-Cu system has an innovative perspective. The melt treatment method used in the work actively homogenized and degassed the melt and improved its crystallization ability. The microstructure (α-Al and eutectic components) was crushed, and the strength indices were increased from 1.5 to 2 times. The porosity is reduced by almost 10 times. It has been proved that pulse electric current melt treatment can compete with heat treatment. The conditions for the choice of optimal current treatment parameters regardless of the melt mass were found.

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Ivanov Artem V.
Gumenenko Mykola K.
Diogtev Yuriy N.
Zhdanov Oleksandr A
Zaichenko Andrii D.
Kharitonova Tetіana H.
Tsurkin Volodymyr M.
Сhestnykh Mykola V