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

通信作者：Qin, QD[1];Li, J[1]|[14440c17cf7bd1f4ff05e]秦庆东;[144400fa133c5f6c59dc2]秦庆东;

机构：[1]Guizhou Inst Technol, Dept Mat & Energy Engn, Guiyang 550003, Peoples R China;[2]Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200240, Peoples R China;[3]Guizhou Inst Technol, Special Funct Mat Collaborat Innovat Ctr Guizhou P, Guiyang 550003, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Dept Mat & Energy Engn, Guiyang 550003, Peoples R 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);WOS:【SCI-EXPANDED(收录号:WOS:001617460100001)】；

基金：This work was supported by the Major Science and Technology Special Project of Guizhou Province (Qiankehe Rencai XKBF [2025] 008) , Guizhou Province Natural Science Basic Research Planning Project (Qianke He Jichu MS [2025] 183) , Guizhou Province High Level Innovative Talents (No. Qianke He Platform and Talent (2022) 011-2) , Natural Science Project of Guizhou Provincial Education Department (Qian jiaoji (2023) 078) , Guizhou Provincial Department of Education Hundreds schools and thousands enterprises in science and technology research unveiled the leading projects (Qian Keji [2024] 002) , Guizhou Province Youth Science and Technology Talent Support Project, Guiyang Bauxite deep processing science and technology small yard. The authors would like to thank Dr. Lilin Xie from Center of Electron Microscopies, Institute of Quantum Materials and Physics, Henan Academy of Sciences for supporting of TEM analysis.

语种：英文

外文关键词：TC4 alloy; IN718 superalloy; Vacuum diffusion bonding; Multilayer structure; Shear strength

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 degrees C 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.