Research Progress on Influence of Interstitial Atoms and Particles on Microstructure and Mechanical Properties of Laser Additive Manufacturing High-Entropy Alloys
GAO Hongliang, SU Haijun, GUO Yinuo, YANG Peixin, XIA Le, ZHANG Zhuo, GUO Min. Research Progress on Influence of Interstitial Atoms and Particles on Microstructure and Mechanical Properties of Laser Additive Manufacturing High-Entropy Alloys[J]. Aeronautical Manufacturing Technology, 2024, 67(8): 54-63,75.
GAO Hongliang, SU Haijun, GUO Yinuo, YANG Peixin, XIA Le, ZHANG Zhuo, GUO Min. Research Progress on Influence of Interstitial Atoms and Particles on Microstructure and Mechanical Properties of Laser Additive Manufacturing High-Entropy Alloys[J]. Aeronautical Manufacturing Technology, 2024, 67(8): 54-63,75. DOI: 10.16080/j.issn1671-833x.2024.08.054.
high-entropy alloys (HEAs) have attracted extensive attention of researchers because of their unique design concept and excellent properties with multiple principal components. Laser additive manufacturing (LAM) can produce HEAs with ultrafine grain and multi-scale structure
accompanied with excellent mechanical properties. Moreover
the doping of interstitial atoms and the addition of reinforced particles are helpful to further improve the strengt and plasticity of the alloy. It also has broad application prospects in aerospace high-performance structural materials and other fields. In this review
the principles and characteristics of selective laser melting and laser directed energy deposition are introduced firstly. Then
the effects of interstitial atoms (C
B
N) and reinforced particles on the microstructure and mechanical properties of HEAs fabricated by LAM are summarized. Additionally
the strengthening and plasticizing mechanism of each interstitial atom and reinforced particle is analyzed. Finally
the future development trend of LAM highperformance HEAs is prospected.