Microstructure of AZ31 Magnesium Alloy Produced by the CONFORM Process under Different Extrusion Wheel Velocities
Microstructure of AZ31 Magnesium Alloy Produced by the CONFORM Process under Different Extrusion Wheel Velocities
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DOI：
10.4028/www.scientific.net/amr.189-193.2609
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发表时间：
2011-02
期刊：
影响因子：
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通讯作者：
Jun Yang;B. Song;Haiqing Ning;R. Fu
中科院分区：
文献类型：
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作者：
Jun Yang;B. Song;Haiqing Ning;R. Fu
众所周知，连续挤压成型（CONFORM）工艺可以生产铝、铜及其合金的各种截面的超长无缝产品。本文实现了AZ31镁合金的连续挤压。研究了挤压轮速度对挤压件微观结构的影响。结果表明，CONFORM工艺实现了晶粒细化。随着挤压轮速度的增加，垂直于挤压方向的横截面中心处的晶粒尺寸增大，并且表面区域的晶粒结构趋于变得均匀。
It is widely known that the continuous extrusion forming (CONFORM) process can produce ultra-long seamless products of various cross-sections for aluminum, copper and their alloys. In this paper, the continuous extrusion of AZ31 magnesium alloy is achieved. The effect of extrusion wheel velocity on microstructure of extrusions is investigated. The results indicate that grain refinement is realized during CONFORM process. As the extrusion wheel velocity increases, the grain size at the center of a cross section perpendicular to the extrusion direction of an extrusion increases, and the grain structure tends to become uniform in the surface region.