华南理工杨永强教授顶刊丨激光增材制造技术进展与前沿
点击关注·聚焦3D打印技术👆 增材制造（快速成形）技术已在我国发展 30 余年，为向全球学者介绍中国的研究成果，在Additive Manufacturing Frontiers (AMF) 执行主编李涤尘教授的带领下，组织策划了“中国增材制造 30 年发展”特刊 (Special Issue on 30 Years of Development of Additive Manufacturing in China)，通过十余个国内增材制造领域的代表性团队的高质量论文，向大家介绍过去 30年来我国增材制造技术的发展历程、主要研究成果以及未来发展趋势。激光增材制造是目前的主流金属增材制造技术之一，主要包括激光选区熔化和激光定向能量沉积技术。由于激光束光斑尺寸小、能量密度高及热影响区小，该技术能保证高致密、高性能精细复杂零件成形，在航空航天、工业模具和生物医疗等领域得到了广泛的应用。目前，激光增材制造技术仍存在以下突出问题：（1）激光选区熔化装备成形尺寸仍然受到限制；（2）三维异质材料成形控制精度低、技术不成熟；（3）激光增材制造零件表面精度仍需进一步提高；（4）单一激光能量场的增材制造零件存在应力大、缺陷不易消除、组织不均匀等问题；（5）成形性能一致性、过程稳定性、以及工艺可重复性亟待提高。本文提供了激光增材制造技术在未来的潜在发展方向：（1）由单一激光器向多波长（红光与蓝光、绿光相结合）/类型（连续激光与皮秒、飞秒激光相结合）/数量激光器发展，实现大尺寸、高效率、高精度增材制造；（2）由低效率、低连接质量多材料增材制造向高效率、高强度多材料增材制造发展，通过改进现有铺粉方式、设计界面连接结构等手段，实现高效率、高强度且粉末不易交叉污染的多材料增材制造；（3）由在线监测向在线监控发展，建立声、光、热、磁等在线监测信号与打印质量的有效评价体系，为在线监控的实现提供关键判据；（4）开发定制化软件解决方案，解决上述及其余复杂工艺成形中路径规划等问题。 Fig. 1. Overview of the frontier progress in LAM techniques developed by our research group Fig. 2. Schematic of the large-scale LPBF technique Fig. 3. Schematic of the blade-based multi-material LPBF technique Fig. 4. LDED-based additive/subtractive hybrid manufacturing techniques Fig. 5. Schematic of off-coaxial monitoring for LPBF process论文引用: Yongqiang Yang, Renwu Jiang, Changjun Han, Jiaqi Chen, Haoran Li, Yan Wang, Jinrong Tang, Heng Zhou, Weinan Hu, Boyuan Zheng, Zixin Liu, Changhui Song, Di Wang. Frontiers in Laser Additive Manufacturing Technology. Additive Manufacturing Frontiers, 2024, 200160. 原文链接: https://doi.org/10.1016/j.amf.2024.200160 近年团队发表文章 [1] Xiao Yunmian, Yang Yongqiang, Wang Di, et al. In-situ synthesis of spatial heterostructure Ti composites by laser powder bed fusion to overcome the strength and plasticity trade-off, International Journal of Machine Tools and Manufacture 2024; 196, 104117, ISSN 0890-6955. https://doi.org/10.1016/j.ijmachtools.2024.104117 [2] Zheng Boyuan, Trofimov Vyacheslav, Wang Di, et al. Study on additive and subtractive manufacturing of high-quality surface parts enabled by picosecond laser. Journal of Materials Processing Technology 2023; 318: 118013. https://doi.org/10.1016/j.jmatprotec.2023.118013 [3] Dong Zhi, Han Changjun, et al. Role of heterogenous microstructure and deformation behavior in achieving superior strength-ductility synergy in pure zinc fabricated via laser powder bed fusion. International Journal of Extremely Manufacturing 2024; 6: 045003. https://doi.org/10.1088/2631-7990/ad3929. [4] Wang Di, Liu Linqing, Han Changjun, et al. Recent progress on additive manufacturing of multi-material structures with laser powder bed fusion. Virtual and Physical Prototying 2022; 17(2): 329-65. https://doi.org/10.1080/17452759.2022.2028343 [5] 王迪, 邓国威, 杨永强, 等. 金属异质材料增材制造研究进展[J]. 机械工程学报, 2021, 57(01): 186-198. [6] Wu Shibiao, Yang Yongqiang, et al. Study on powder particle behavior in powder spreading with discrete element method and its critical implications for binder jetting additive manufacturing processes. Virtual and Physical Prototyping 2023; 18(1): e2158877. https://doi.org/10.1080/17452759.2022.2158877 [7] Xiao Yunmian, Song Changhui, et al. In-situ additive manufacturing of high strength yet ductility titanium composites with gradient layered structure using N2. International Journal of Extreme Manufacturing 2024; 6(3). https://doi.org/10.1088/2631-7990/ad2602. [8] Dong Zhi, Han Changjun et al. Revealing anisotropic mechanisms in mechanical and degradation properties of zinc fabricated by laser powder bed fusion additive manufacturing. Journal of Materials Science & Technology 2024. https://doi.org/10.1016/j.jmst.2024.06.045. [9] Song Changhui, et al. Radial gradient design enabling additively manufactured low-modulus gyroid tantalum structures. International Journal of Mechanical Sciences 2023; 108710. https://doi.org/10.1016/j.ijmecsci.2023.108710 [10] 杨永强, 蒋仁武, 刘子欣, 等. 大尺寸粉末床激光熔融流场分析及在线监控研究进展[J].机械工程学报, 2023, 59(19): 389-410. 来源：增材制造硕博联盟
