Hardening mechanism in melt-quenched Al-Zn-Mg-(Cu) alloys |
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| Authors: | O E Osintsev V Yu Konkevich S Ya Betsofen |
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| Affiliation: | (1) MATI—Tsiolkovskii Russian State University of Technology, ul. Orshanskaya 3, Moscow, 121552, Russia;(2) OAO Russian Institute of Light Alloys, ul. Gorbunova, 2, Moscow, 121596, Russia |
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| Abstract: | The effect of various hardening factors on the mechanical properties of melt-quenched high-strength Al-Zn-Mg and Al-Zn-Mg-Cu alloys is considered. Alloys with zirconium and Group VIIIA metals are shown to have high mechanical properties. The high strength of these materials is achieved due to the precipitation of Al3Zr (Ll2) metastable phase particles and to a pronounced aging effect in materials alloyed with cobalt and nickel. High-strength melt-quenched 01949 (Al-Zn-Mg), 01959, and 01979 (Al-Zn-Mg-Cu) alloys containing zirconium, cobalt, and nickel are developed using these phenomena. |
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