文献类型：期刊文献

英文题名：Interfacial microstructure and strengthening mechanisms of Ti-6Al-4V/Inconel 718 diffusion-bonded joint via multilayered structure

作者：Zhao, Honglong He, Fu Feng, Kai Qin, Qingdong Yu, Ting xiao Li, Juan

机构：[1] Department of Materials & Energy Engineering, Guizhou Institute of Technology, Guiyang, 550003, China; [2] Shanghai Key Laboratory of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; [3] 2011 Special Functional Materials Collaborative Innovation Center for of Guizhou Province, Guizhou Institute of Technology, Guiyang, 550003, China

第一机构：贵州理工学院

通信机构：Department of Materials & Energy Engineering, Guizhou Institute of Technology, Guiyang, 550003, China|贵州理工学院;

年份：2025

卷号：1046

外文期刊名：Journal of Alloys and Compounds

收录：EI(收录号：20254519477003);Scopus(收录号：2-s2.0-105021020387)

语种：英文

外文关键词：Aluminum alloys - Binary alloys - Copper - Copper alloys - Diffusion - Indium alloys - Multilayers - Nickel alloys - Shear flow - Shear strength - Ternary alloys - Titanium alloys - Vanadium alloys

摘要：Fabricating high-quality titanium/nickel hybrid structures can combine their respective advantages, thereby increasing design flexibility and product functionality. In the present study, a Cu interlayer was employed to create a multilayer structure between Ti6Al4V and IN718 alloys through vacuum diffusion bonding, achieving a high-strength joint. The mechanical properties indicated that the maximum shear strength of the joint was reached 220 MPa at 850 ℃ for 120 min, which is 2.75 times greater than that of the direct diffusion bonding joint without a Cu interlayer. The combined effects of inhibiting the formation of the brittle Ti2Ni phase, forming a multilayer structure, and increasing the number of low-angle boundaries (LABs) led to a significant improvement in the bonding strength of the TC4/Cu/IN718 diffusion bonding joint. Microstructural analysis revealed that the multilayer structure consists of Ti-Cu and AlNi2Ti phases, with the proportion of LABs increasing to 22.8 % within the multilayer structure. This research demonstrates that the Cu interlayer significantly enhances interfacial bonding quality and joint strength in titanium and nickel alloys, providing valuable experimental support for related engineering applications. ? 2025 Elsevier B.V.