SEMISOLID EXTRUSION TECHNOLOGY OF 6066 ALLOY PREPARED BY MULTILAYER SPRAY DEPOSITION Article Abstract

Author : THE CHINESE JOURNAL OF NONFERROUS METALS

Abstract by : TsingHua

Visits : 19 words: 300 Published: June 30, 1998

This abstract was translated from 多层喷射沉积6066铝合金半固态挤压

6066 aluminum alloy billets(Al1.37Si1.37Mg0.77Cu) were produced by multilayer spray deposition technology, studies were carried out to evaluate the feasibility of subsequent semisolid extrusion and its influence on microstructure and mechanical properties. Assprayed grain was equiaxed with mean size of about 15 μm, grains coarsened slightly in full solid state, which are in good agreement with Ostwald coarsing mechanism. Typical microstructures of assprayed materials heated to semisolid state are of spheriodical solid particles distributed in liquid phase, which are thixotropic microstructure fit to thixoforming. The necessary extrusion force in semisolid state is about 1/3 of that in coventional hot extrusion. Asextruded materials have uniform precipitates distribution and achieve finer recrystallization grains under T6 condition. Mean precipitated size increase from 1 μm to 2 μm after T6 treatment, and mechanical properties reach that of conventional hot extruded materials.

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SEMISOLID EXTRUSION TECHNOLOGY OF 6066 ALLOY PREPARED BY MULTILAYER SPRAY DEPOSITION by THE CHINESE JOURNAL OF NONFERROUS METALS Unknown 2007

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