1. B.Płonka, J.Senderski, "Advanced technologies used in the manufacture of products from aluminium alloys powder in extrusion process" Key Engineering Materials, Vol 491, Trans Tech Publications Ltd, Switzerland, 2012, p. 59-66

Abstract

The article presents the results of the investigations of an AlCuMgMn(ZrSc) alloy produced in the form of powder. The basic properties of the powder made by the atomisation process were disclosed. The AlCuMgMn(ZrSc) alloy powder was subjected to consolidation in the process of direct hot extrusion. The aim of the study was to optimise the process of Al alloy powder hot extrusion using conical dies. Parameters of the powder consolidation process were determined in terms of the choice of the tool (die) geometry, and extrusion rate and temperature, allowing for an influence of these parameters on alloy density and mechanical properties after consolidation. The structure evolution of the material at various stages of the manufacturing process was also discussed.

2. B.Płonka, S.Boczkal, M.Rajda, "Effect of Manufacturing Conditions on the Utilitarian Properties of AlCuMgMn(ZrSc) Alloy Consolidated from Powder", Conference Proceedings − Powder Metallurgy World Congress and Exhibition, 14-18 October 2012, Yokohama, Japan

Abstract

The subject of the research was an alloy AlZnMg and AlCuMg with addition of Zr and Ag manufactured of powders by hot plastic consolidation in process of direct extrusion. Paper also presents results of research of structure evolution and mechanical properties for different tempers of precipitation strengthening and further plastic deformation, including hydrostatic extrusion. Obtained results Rm above 700MPa (for AlZnMg alloy) and above 500MPa (for AlCuMg alloy) shows significant possibilities of manufacturing from Al alloys powders products with ultrafine grain and nanometric structure which properties exceeding alloys manufactured with standard methods.