Material-structure-performance integrated laser-metal additive manufacturing

作者：D. Gu, Xin-Yu Shi, R. Poprawe, D. Bourell, R. Setchi, Jihong Zhu · 发表于：Science · 年份：2021 · DOI：10.1126/science.abg1487 · 被引用次数：1526 · 研究领域：Medicine

Cross-scale coordination Laser-based additive manufacturing has the potential to revolutionize how components are designed. Gu et al. suggest moving away from a strategy that designs and builds components in a serial manner for a more wholistic method of optimization for metal parts. The authors summarize several key developments in laser powder bed fusion and directed energy deposition and outline a number of issues that still need to be overcome. A more integrated approach will help to reduce the number of steps required for fabrication and expand the types of structures available for end-use components. Science, abg1487, this issue p. eabg1487 A Review explains that material-structure-performance integration enables high-performance, multifunctional laser-metal additive manufacturing. BACKGROUND Metallic components are the cornerstone of modern industries such as aviation, aerospace, automobile manufacturing, and energy production. The stringent requirements for high-performance metallic components impede the optimization of materials selection and manufacturing. Laser-based additive manufacturing (AM) is a key strategic technology for technological innovation and industrial sustainability. As the number of applications increases, so do the scientific and technological challenges. Because laser AM has domain-by-domain (e.g., point-by-point, line-by-line, and layer-by-layer) localized forming characteristics, the requisite for printing process and performance control encomp...