Experimental and Numerical Investigations of In Situ Alloying during Powder Bed Fusion of Metals Using a Laser Beam
Experimental and Numerical Investigations of In Situ Alloying during Powder Bed Fusion of Metals Using a Laser Beam
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激光熔化金属粉末床过程中原位合金化的实验和数值研究
DOI：
10.3390/met11111842
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发表时间：
2021-11
期刊：
影响因子：
2.9
通讯作者：
A. Wimmer;B. Yalvac;C. Zoeller;Fabian Hofstaetter;S. Adami;N. Adams;M. Zaeh
中科院分区：
文献类型：
--
作者：
A. Wimmer;B. Yalvac;C. Zoeller;Fabian Hofstaetter;S. Adami;N. Adams;M. Zaeh
使用激光束的金属粉末床熔融（PBF-LB/M）越来越多地用于各种工业部门中复杂零件的制造。考虑到PBF-LB/M未来的成功，实现稳健且可重现的制造工艺是主要目标之一。为了应对这些挑战，需要专门适应该工艺的合金。本文展示了成功的相互作用的模拟研究与实验数据分析的基本现象，在原位合金化。采用无网格光滑粒子流体动力学（SPH）方法对双组分粉末体系进行了数值模拟，同时考虑了固相和熔体相的热力学和流体力学。利用新型实验台的数据丰富和验证了316 L不锈钢与AlSi 10 Mg铝合金共混原位合金化的模拟结果。这两种方法的结合可以增强对原位合金化过程的理解。因此，未来的调查PBF-LB/M过程与多组分粉末系统可以受益于详细的数值研究，使用SPH。
Powder Bed Fusion of Metals using a Laser Beam (PBF-LB/M) is increasingly utilized for the fabrication of complex parts in various industrial sectors. Enabling a robust and reproducible manufacturing process is one of the main goals in view of the future success of PBF-LB/M. To meet these challenges, alloys that are specifically adapted to the process are required. This paper demonstrates the successful interplay of simulation studies with experimental data to analyze the basic phenomena of in situ alloying. The meshless Smoothed-Particle Hydrodynamics (SPH) method was employed for the numerical simulation of two-component powder systems considering both thermodynamics and fluid mechanics in the solid and the melt phase. The simulation results for the in situ alloying of stainless steel 316L blended with the aluminum alloy AlSi10Mg were enriched and validated with the data from a novel experimental test bench. The combination of both approaches can enhance the understanding of the process for in situ alloying. Therefore, future investigations of the PBF-LB/M process with multi-component powder systems can benefit from detailed numerical studies using SPH.