Materials design and in-situ preparation of aluminum alloys and composites for additive manufacturing
Bo Song, Yusheng Shi*, Jinliang Zhang
Huazhong University of Science and Technology, Wuhan, 430074, China
EXTENDED ABSTRACT: The studies on laser additive manufacturing (LAM) of Al alloy and composite materials mainly start from traditional grades. The traditional alloys designed based on the equilibrium solidification process is difficult to meet the dynamics characteristics of LAM with high crack sensitivity, low toughness and anisotropy. It is necessary to carry out research on the materials design of new materials for LAM. Most of the current research on the material modification is based on experience, lacking a complete design theory system. The special Al alloys and composites for LAM are developed based on the thermodynamic calculations and phase field simulations in this report. Two modification methods are proposed: element modification and ceramic particle modification. The final designed and formed aluminum alloy and its composite material have mechanical properties comparable to forgings.
Fig. 1. Materials design of additively manufacturing Al alloys
REFERENCES
[1] J.L. Zhang, B. Song et al, Addit. Manuf. 38, (2021) 101829.
Song Bo, professor in Huazhong University of Science and Technology. He has long been engaged in research on advanced materials and structural design for additive manufacturing. Won the NSFC Outstanding Youth Fund, Hubei Province Outstanding Youth Fund, et al. Served as the editorial board member of the journals "Nano Materials Science", "Metal", and "Advanced Powder Materials", the young communication expert of "Engineering", the young editorial board member of "Acta Metals Sinica" and "The Chinese Journal of Nonferrous Metals" et al. In recent years, more than 70 SCI papers have been published in international journals with citation of 2500+ times, including 1 cover paper, 3 ESI highly cited papers, 1 hot paper, and Chinese Journal of Mechanical Engineering 2020 High-impact papers. The developed metallic powders have been applied to Boeing Company, and the designed structures have been applied to the 719 Institute of China Shipbuilding Industry Corporation.