Webster Samantha, Giovannini Marco, Shi Yi, Martinez-Prieto Nicolas, Fezzaa Kamel, Sun Tao, Ehmann Kornel, Cao Jian
Northwestern University, 2145 Sheridan Rd., Evanston, Illinois 60208, USA.
X-Ray Science Division, Argonne National Laboratory, 9700 S Cass Ave., Lemont, Illinois 60439, USA.
Rev Sci Instrum. 2022 Feb 1;93(2):023701. doi: 10.1063/5.0077140.
Laser metal additive manufacturing has become an increasingly popular technology due to its flexibility in geometry and materials. As one of the commercialized additive processes, powder-blown directed energy deposition (DED) has been used in multiple industries, such as aerospace, automotive, and medical device. However, a lack of fundamental understanding remains for this process, and many opportunities for alloy development and implementation can be identified. A high-throughput, in situ DED system capable of multi-layer builds that can address these issues is presented here. Implications of layer heights and energy density are investigated through an extensive process parameter sweep, showcasing the power of a high-throughput setup while also discussing multi-layer interactions.
由于激光金属增材制造在几何形状和材料方面具有灵活性，它已成为一种越来越受欢迎的技术。作为商业化的增材制造工艺之一，粉末送料定向能量沉积（DED）已应用于多个行业，如航空航天、汽车和医疗设备行业。然而，目前对该工艺仍缺乏基本的了解，并且可以发现合金开发和应用存在许多机会。本文介绍了一种能够进行多层构建的高通量原位DED系统，该系统可以解决这些问题。通过广泛的工艺参数扫描，研究了层高和能量密度的影响，展示了高通量设置的优势，同时还讨论了多层相互作用。
