求材料翻译

来源：百度知道 编辑：UC知道 时间：2024/06/28 20:58:37
本文主要研究了超声处理，电磁搅拌，超声及电磁搅拌联合处理对铝硅镁合金凝固组织的影响。
首先配制成所需成分的合金，然后熔炼，除气，浇注；对合金液进行超声处理，电磁搅拌，超声及电磁搅拌联合处理。为了进行对比，改变浇注温度，继续进行上述处理。将铸出的件按轴线方向切割成两部分，一部分磨宏观，用腐蚀液腐蚀后观察其宏观组织，另一部分取中间，磨微观，用抛光布抛光，腐蚀后观察微观组织，研究晶粒细化情况及铝硅的析出。
研究结果表明： 经电磁搅拌处理的Al-Si-Mg合金，其凝固组织得到细化，在高压旋转磁场的作用下使得镁从晶界中析出造成严重偏析，在晶界处形成蛛网状的Mg2Si相，随着磁场强度降低，这种现象得到较好改善。在强磁场作用下，硅也存在不同程度的偏析，以块状或板条状析出。超声处理时间存在最佳值，并不是处理时间越长细化效果越明显。经超声及电磁同时作用于金属熔体，除可以使凝固晶粒更加圆整外，并不能较大提高细化程度。

关键词： 铝硅镁合金；超声处理；电磁搅拌；

This paper studies the ultrasound treatment, EMS, ultrasound and EMS on the Al-Si-Mg alloy solidification organizations affected.
First of all the necessary ingredients into the preparation of alloy, and then melting, in addition to gas, pouring; alloy liquid to the ultrasound treatment, EMS, ultrasonic and electromagnetic stirring joint treatment. For comparison, pouring temperature changes, continue to carry out such treatment. Will be cast to cut the direction of the axis of two parts, part of macro-mill, with Fushi Ye corrosion after its macro-observation, the other part from the middle, micro-grinding, polishing cloth with polishing, after the observation of micro-corrosion, small grain research Al-Si and the situation of the precipitation.
The results show that: EMS deal with the Al-Si-Mg alloy, its microstructure be refined, high pressure rotating magnetic field makes the role of magnesium from the boundary of precipitation caused serious segregation in the grain