增材制造GH3536回流燃烧室火焰筒主燃孔的微观组织演变与裂纹扩展行为  

Microstructure Evolution and Crack Propagation Behaviors of the Primary Hole in Additive Manufactured GH3536 Reverse-flow Combustor Liner

作　　者：曾琦 倪浩涵 刘伟 黎超超 王江伟 ZENG Qi;NI Haohan;LIU Wei;LI Chaochao;WANG Jiangwei(School of Aeronautics and Astronautics,Zhejiang University,Hangzhou 310027,China;AECC Hunan Aviation Plant Research Institute,Zhuzhou 412002,Hunan,China;School of Materials Science and Engineering,Zhejiang University,Hangzhou 310027,China;AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China)

机构地区：[1]浙江大学航空航天学院,杭州310027 [2]中国航发湖南动力机械研究所,湖南株洲412002 [3]浙江大学材料科学与工程学院,杭州310027 [4]中国航发北京航空材料研究院,北京100095

出　　处：《材料导报》2025年第8期182-185,共4页Materials Reports

基　　金：国家自然科学基金(52071284);中国航空发动机集团(HFZL2019CXY001)。

摘　　要：增材制造技术能够实现结构复杂部件的快速近净成形,在航空航天领域得到了广泛关注。然而,近服役工况条件下增材制造热端零部件的损伤和失效行为研究当前仍较为缺乏。本工作利用激光粉末床熔融制备了GH3536回流燃烧室火焰筒部件,开展了近服役工况条件下的部件燃烧仿真模拟试验,借助显微组织分析揭示了裂纹诱导的火焰筒部件主燃孔失效机制,阐明了裂纹萌生机理以及裂纹扩展过程中的高温氧化和沿晶偏转行为,对增材制造高温合金零部件的安全服役设计具有参考价值。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.

关 键 词：激光增材制造 火焰筒 高温合金 组织演变 裂纹扩展 

分 类 号：TG146.15[一般工业技术—材料科学与工程]