文献类型：期刊文献

英文题名：Diffusion bonding of FGH98 superalloy and DD5 single crystal using pure Ni interlayer

作者：Shi, Junmiao[1];Liu, Jiatao[2,3];Jin, Feng[3];Tian, Fuqiang[1];Sun, Xianjun[3]

机构：[1]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[2]Shenyang Liming Aeroengine Corp Ltd, Aero Engine Corp China, Shenyang 110043, Peoples R China;[3]Northwestern Polytech Univ, Shaanxi Key Lab Frict Welding Technol, Xian 710072, Peoples R China

年份：2023

卷号：37

外文期刊名：MATERIALS TODAY COMMUNICATIONS

收录：;EI(收录号：20233714701766);WOS:【SCI-EXPANDED(收录号:WOS:001074821100001)】；

基金：This study was supported by the National Natural Science Founda- tion of China (No. 52005410) and the China Postdoctoral Science Foundation (No. 2019TQ0263, No. 2020M683560) .

语种：英文

外文关键词：Diffusion bonding; Superalloy; Ni interlayer; Microstructure; Property

摘要：In this study, the FGH98 superalloy and DD5 single crystal were diffusion bonded using pure Ni interlayer under the pressure of 4 MPa. The elemental interdiffusion of Ni interlayer and base materials induced Ni3Al phases (gamma') reinforced Ni-based solid solution (gamma) bonding seam (Ni layer zone), achieving the reliable joining of FGH98 and DD5. With the increase of diffusion bonding temperature, the elemental interdiffusion was promoted signifi-cantly, which was beneficial to the formation of gamma' phase in the joint. Due to the formation and enlargement of gamma' phase, the hardness of the Ni layer zone and the joint shear strength raised. The high diffusion bonding tem-perature (1160 degrees C) resulted in gamma' phase bulk in the Ni layer zone, and the maximum joint strength of 630 MPa was achieved. However, the fracture of the joint obtained at 1160 degrees C was located in the Ni layer zone.