Interfacial reaction product and mechanical properties of the electron beam brazed K465 Ni-based superalloy joints

被引：1
|
作者：
王刚 [1 ]
张秉刚 [1 ]
何景山 [1 ]
冯吉才 [1 ]
吴英杰 [2 ]
机构：
[1] State Key Laboratory of Advanced Welding Production Technology,Harbin Institute of Technology
[2] Quality Control Department,Harbin Jiancheng Industry Co., Ltd.
来源：
China Welding | 2008年 / 02期
关键词：
electron beam; brazing; interfacial reaction product; shear strength;
D O I：
暂无
中图分类号：
TG115.5 [机械性能（力学性能）试验];
学科分类号：
080502 ;
摘要：
Ni-based superalloy K465 is brazed with BNi-2 filler metal by vacuum electron beam brazing (VEBB). In process of VEBB, effects of processing primary parameters on shear strength of joints are investigated. Microstructure of the brazed joint with BNi-2 filler metal is studied by means of scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). The results show that the structure of brazed seam consists of a large amount of Ni-based γ solid solution, Ni3Al (γ′), Ni3B, WB, CrB, and a small quantity of WC, NbC. The maximum shear strength of the joint is 398 MPa when the beam current of welding is 2.6 mA, heating time is 480 s and focused current is 1800 mA.
引用
收藏
页码：32 / 36
页数：5
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