The structure and strength characteristics of wrought Al—5Mg alloy with alloying by scandium, zirconium and niobium

Y.Milman,
    
A.Sharovskiy
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Electron Microscopy and Strength of Materials - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2015, #21
http://www.materials.kiev.ua/article/1727

Abstract

The possibility of improving the mechanical characteristics of the Al—5Mg alloys by means of additional microalloying by complexes Sc + Zr and Sc + Zr + Nb is investigated. Semi-finished products of the alloys obtained by dual extrusion of ingots in rods with a diameter of 6 mm. It is shown that microalloying of base alloy by Sc and Zr cardinally changes of substructure of extruded semi-finished products. In all alloys with microalloying by complexes Sc + Zr and Sc + Zr + Nb the cellular dislocation structure with a size of cells of 0,4—0,5 microns is formed. The studied alloys microalloyed by complexes Sc + Zr and Sc + Zr + Nb have strength on 60—70% higher then standard Al—5Mg alloys with satisfactory plasticity. Full text download


ALUMINUM ALLOYS, DISLOCATION STRUCTURE, MICROALLOYING, PLASTICITY, STRENGTH