OPTIMIZATION OF THE AMOUNT OF MAGNESIUM AND COPPER IN SILUMINS OF THEAK7 TYPE

Authors
Citation
Na. Belov et Ay. Gusev, OPTIMIZATION OF THE AMOUNT OF MAGNESIUM AND COPPER IN SILUMINS OF THEAK7 TYPE, Metal science and heat treatment, 38(3-4), 1996, pp. 107-111
Citations number
10
Categorie Soggetti
Metallurgy & Metallurigical Engineering
ISSN journal
00260673
Volume
38
Issue
3-4
Year of publication
1996
Pages
107 - 111
Database
ISI
SICI code
0026-0673(1996)38:3-4<107:OOTAOM>2.0.ZU;2-J
Abstract
In order to optimize the concentrations of the basic alloying elements in standard low-copper silumins of the AK7 and AK9 types the effect o f copper and magnesium on structure and the phase composition of these alloys is analyzed and phase diagrams are constructed for the conditi ons of actual crystallization. The method of simplex design is used to construct mathematical models of the dependences of the main mechanic al properties of silumins on the concentration of the alloying element s in the cast state and alter conventional forms of heat treatment. Th is has made it possible to determine the possibility of widening the r ange of copper and magnesium concentrations without worsening the mech anical properties of silumins.