镍基高温合金电子束焊接接头疲劳性能

Fatigue properties of electron beam welded joints of Nickelbase superalloy

1.
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China;Science and Technology on Power Beam Processes Laboratory, Bejjing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China
2.
Science and Technology on Power Beam Processes Laboratory, Bejjing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China
3.
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China

摘要: 对GH4169高温合金板材电子束焊接试样进行了金相分析和高、低周疲劳试验,分析GH4169合金的高、低周疲劳性能及疲劳断口形貌.结果表明,GH4169合金电子束焊接接头焊缝区的特点是树枝晶比较明显,为比较发达的树枝晶和明显的二次枝晶.在较高放大倍数下发现,母材和热影响区也为树枝晶结构.接头低周疲劳性能不低于母材,随应变幅降低,相同应变幅下焊接接头疲劳寿命变得略高于母材.接头高周中值疲劳强度比母材高约80 MPa.
- 电子束焊接 /
- GH4169 /
- 疲劳性能 /
- 显微组织
Abstract: The microstructure,high and low cycle fatigue properties of GH4169 electron beam (EB) welded joints were investigated. The results show that the EB weld of GH4169 alloy consisted of dendrite structures with the developed dendrite and secondary dendrite. The heat-affected zone (HAZ) and base metal showed also dendrite structure. The low cycle fatigue properties of joints were not lower than those of the base metal. With strain amplitude reduced,the low cycle fatigue life of joints became higher than that of the base metal at the same strain amplitude. The median high cycle fatigue strength of joints was about 80 MPa higher than that of the base metal.
- electron beam welding /
- GH4169 /
- fatigue property /
- microstructure Ⅵ

1.	罗雨，高萌萌，许耀波，任飞燕，于俊杰，田文鹏，刘铂洋. 基于虚拟现实的立管横焊机器人辅助焊接工艺设计与实现. 机床与液压. 2024(13): 110-115+236 . 百度学术
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3.	高昶霖，宋燕利，左洪洲，章诚. 基于动态权重的自适应PSO-BP神经网络焊接缺陷成因诊断. 焊接学报. 2022(01): 98-106+119-120 . 本站查看
4.	王巧玲，荣建，陈洪宇，魏艳红，荣佑珍，吴振勇. 航空用焊接数据库及专家系统平台的设计与开发. 电焊机. 2018(09): 16-20 . 百度学术
5.	沈彦. 基于多目标决策法的电站锅炉焊接专家系统设计. 黑龙江大学自然科学学报. 2016(03): 303-307 . 百度学术