Microstructure Characterization of Extrusion Welding in a Magnesium Alloy Extrudate
Microstructure Characterization of Extrusion Welding in a Magnesium Alloy Extrudate
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DOI：
10.1007/s13632-013-0099-z
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发表时间：
2013-10
期刊：
影响因子：
--
通讯作者：
N. Alharthi;W. Misiolek
中科院分区：
文献类型：
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作者：
N. Alharthi;W. Misiolek
分流模热挤压工艺已用于制造具有中空或复杂半中空金属型材的管材。在分流模内，金属被分成若干股，这些股在模具的焊接室中在高温和高压条件下连接在一起。这种连接过程以固态结合的形式发生，也称为挤压焊接。在这项工作中，镁合金（AM30）挤出物已被表征，以更好地了解存在于不同的型材位置的挤压焊缝的微观结构和完整性。偏光显微镜图像显示，有两种类型的挤压焊接焊缝的显微组织特征的基础上。
The hot extrusion process with porthole dies has been utilized in manufacturing of tubes with hollow or complex semi-hollow metal profiles. Within the porthole die, metal is divided into several strands, which are joined together under high temperature and high pressure conditions in the welding chamber of a die. This joining process occurs as a solid-state bonding and is also known as extrusion welding. In this work, a magnesium alloy (AM30) extrudate has been characterized to better understand the microstructure and integrity of the extrusion welds present in different profile locations. The polarized light microscopy images revealed that there are two types of extrusion welding based on the microstructural characteristics of the weld.