Heat Treated AZ61 Magnesium Alloy Obtained by Direct Extrusion and Continuous Rotary Extrusion Process

Archives of Metallurgy and Materials

J. Żelechowski¹  M. Gawlik¹  M. Bigaj¹  M. Mitka¹  S. Boczkal¹ 

[1] Institute of Non-Ferrous Metals in Gliwice, Light Metals Division, 16 Pi?sudskiego str., 32-050 Skawina, Poland

关键词: Keywords: AZ61;    heat treatment;    Mg17Al12;    continuous rotary extrusion;    direct extrusion;   

DOI  :  10.1515/amm-2016-0074

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

The results of studies carried out on the heat treated AZ61 magnesium alloy extruded by two methods, i.e. direct extrusion and continuous rotary extrusion, were presented. As part of the work, parameters of the T6 heat treatment were proposed and aging curves were plotted. The solution heat treatment process was accompanied by the grain growth. During artificial aging, due to the decomposition of solid solution, the β-Mg17Al12 phase was precipitated from the supersaturated α solution. It precipitated in a coagulated form at the grain boundaries and in the form of fine-dispersed plates arranged in a preferred direction relative to the grain orientation. Rods obtained by continuous rotary extrusion, unlike those made by the direct process, exhibited a low degree of texturing and lack of anisotropic properties.

【 授权许可】

Unknown