| METALS AND METAL MATRIX COMPOSITES |
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| Microstructure Evolution and Crack Propagation Behaviors of the Primary Hole in Additive Manufactured GH3536 Reverse-flow Combustor Liner |
| ZENG Qi1,2, NI Haohan3, LIU Wei4, LI Chaochao2, WANG Jiangwei3,*
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1 School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
2 AECC Hunan Aviation Plant Research Institute, Zhuzhou 412002, Hunan, China
3 School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
4 AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China |
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Abstract Additive manufacturing technology enables rapid near-net forming of complex-shape parts and has raised significant attention in the aerospace industry. However, the damage and failure behaviors of additive manufactured hot-part components under service conditions remain largely unclear. In this work, we employed laser powder-bed fusion to fabricate the GH3536 reverse-flow combustor liner and conducted combustion tests under realistic service conditions. By analyzing the microstructure, we revealed the mechanism of cracking induced failure of the primary hole, as well as the high-temperature oxidation and intergranular fracture behaviors during the crack propagation. These findings hold important implications for the safety design of additive manufacturing combustor liner under service conditions.
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Published: 25 April 2025
Online: 2025-04-18
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2025, Vol. 39 
