PDF(3834 KB)
Laser Additive Manufacturing Inconel 718 Matrix Composites and Their Mechanical Performances
Zhong Qiaofang, Li Mengjie, Hu Yanqiu, Qu Chao, Zhang Haijun, Liu Jianghao
Prog Chem ›› 2025, Vol. 37 ›› Issue (9) : 1384-1396.
PDF(3834 KB)
PDF(3834 KB)
Laser Additive Manufacturing Inconel 718 Matrix Composites and Their Mechanical Performances
Owing to its high temperature strength, high ductility and good corrosion resistance, Inconel 718 (IN718) alloy had broad application prospects in aerospace, military and energy fields. However, the low hardness and wear resistance of IN718 alloy severely limited its application. To solve these problems, one of the feasible strategies was to modify the composition/microstructure of IN718 alloy. Laser additive manufacturing methods had the capabilities of effectively regulating the composition and microstructure of composite materials, so as to enhance their mechanical performances. Herein, the intrinsic properties and compositional modification strategies of IN718-matrix composites were first introduced, and then the advantages and limitations of laser-additive-manufactured IN718-matrix composites were summarized, respectively. Subsequently, the evolution laws of microstructural morphologies and mechanical performances of IN718-matrix composites prepared by laser additive manufacturing methods were summarized. Finally, the key scientific problems in modifying the preparation method, regulating microstructure and optimizing mechanical performances of IN718-matrix composites were respectively clarified, and the future developments were prospected.
1 Introduction
2 Modification of IN718 alloy
2.1 Surface modification
2.2 Matrix modification
3 Laser additive manufacturing methods for IN718 matrix composites
3.1 Laser Powder Bed Fusion
3.2 Laser Directed Energy Deposition
3.3 Laser Cladding
4 Microstructure and mechanical performances of laser additive manufacturing IN718 matrix composites
4.1 Surface modification
4.2 Matrix modification
5 Conclusion and outlook
IN718-matrix composites / laser additive manufacturing / surface modification / matrix modification / microstructure / mechanical performances
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