Analysis of the phase transformation of AlSi10Mg during Laser Powder Bed Fusion
Analysis of the phase transformation of AlSi10Mg during Laser Powder Bed Fusion
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激光粉床熔融过程中 AlSi10Mg 的相变分析
DOI：
10.1016/j.procir.2020.09.034
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Schuler
中科院分区：
文献类型：
--
作者：
Wimmer;Lehmann;Schuler
激光粉末床熔融（LPBF）过程中工艺区的特性对增材制造零件的质量具有决定性作用。热成像测量可以深入了解熔池及其周围环境的温度。温度场的特殊性可以归因于LPBF过程中的过程动力学或合金成分的改变。本研究提出了一种分析过程中的相变的方法。它表明，热成像测量允许液相线和固相线温度的详细调查。AlSi10Mg的实验揭示了能量输入和由此产生的成分过冷之间的直接相互作用。基于这一发现，可以在LPBF过程中调整工艺参数来控制合金的相变过程。
The characteristics of the process zone during Laser Powder Bed Fusion (LPBF) are decisive for the quality of additively manufactured parts. Thermographic measurements give an insight into the temperatures of the melt pool and its surroundings. Particularities in the temperature field can be attributed to the process dynamics or the alteration of the alloy composition during LPBF. This study presents a method for the analysis of the phase transformation during the process. It is demonstrated that thermographic measurements allow a detailed investigation of the liquidus and the solidus temperature. Experiments with AlSi10Mg revealed a direct interaction between the energy input and the resulting constitutional undercooling. Based on this finding, process parameters can be adjusted during LPBF to control the phase transformation process of the alloy.
影响因子：
16.1
作者：
R. Trivedi;W. Kurz;Ames Laboratory
通讯作者：
R. Trivedi;W. Kurz;Ames Laboratory