The extrusion speed and deformation temperature are important factors affecting the microstructure development during the deformation. Microstructure development plays a crucial role in the performance of the mechanical properties of materials. In direct extrusion, the homogeneous evolution of the microstructure in the length of the extruded bar could be affected due to its non-isothermal exit temperature evolution. Thus, a new set-up is suggested with real-time controllable speed and temperature to characterize the influence of temperature on the microstructure and obtain its homogeneous development for the magnesium alloy. During the extrusion, the temperature of the extruded bar is evaluated by using the infra-red camera, and the extrusion speed is simultaneously controlled in real-time depending on the temperature difference between a set temperature reference and the one obtained from the infra-red camera. This suggested set-up of extrusion is evaluated in terms of the microstructure and temperature evolution of the extruded bar.

挤压速度和变形温度是影响变形过程中显微组织发展的重要因素。微观结构的发展对材料力学性能的表现起着至关重要的作用。在直接挤压中，由于其非等温出口温度演变，挤压棒材长度上微观结构的均匀演变可能会受到影响。因此，建议采用实时可控速度和温度的新装置来表征温度对镁合金微观结构的影响，并获得其对镁合金的均匀发展。在挤压过程中，挤压棒材的温度通过使用红外摄像机进行评估，挤出速度同时根据设定温度参考值与红外摄像机获取的温度差实时控制。这种建议的挤压设置根据挤压棒材的微观结构和温度演变进行评估。