STRUCTURE AND PROPERTIES OF CASTINGS OF THE Al-Mg-Zn SYSTEM.

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作者：
Parkhomenko, N.A.
Gerchikova, N.S.
Cherkasov, V.V.
Pobezhimov, P.P.
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来源：
Metal Science and Heat Treatment (English Translation of Metallovedenie i Termicheskaya Obrabotka | 1985年 / 27卷 / 3-4期
关键词：
ALUMINUM CASTINGS - Heat Treatment - ALUMINUM METALLOGRAPHY - Transformations;
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摘要：
The basic hardening phase is the T phase (Al//2Mg//3Zn//3) which is segregated from 160 to 170 degree C. On heating to 190 degree C and higher, the beta phase (Al//3Mg//2) begins to form along subgrain boundaries and over the entire grain at temperatures above 200 degree C. Coagulation of T phase and growth of beta phase lead to reduction in strength of an alloy containing 5. 5% Mg and 2. 5% Zn. The best properties correspond to the phase transformation after aging at 80 degree C for 8 h plus 190 degree C for 2 h.
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页码：233 / 236
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