Microstructure and mechanical properties of the Si3N4/42CrMo steel joints brazed with Ag–Cu–Ti + Mo composite filler |
| |
| Authors: | YM He J Zhang Y Sun CF Liu |
| |
| Affiliation: | 1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China;2. Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Joining Technologies and Corrosion, CH-8600 Dübendorf, Switzerland;1. School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China;2. National-Local Joint Engineering Research Center of Nonferrous Metals and Processing Technology, Hefei University of Technology, Hefei 230009, China;1. State Key Laboratory for Advanced Metals and Materials, Beijing Key Laboratory for Powder Metallurgy and Particulate Materials, University of Science and Technology Beijing, Beijing 100083, China;2. Chemistry Division, PINSTECH, P.O. Box, Nilore, Islamabad, Pakistan;1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;2. Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China;3. Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518000, China |
| |
| Abstract: | The Si3N4 ceramic was joined to 42CrMo steel using Ag–Cu–Ti + Mo composite filler. Effect of Mo particles content on the microstructure and mechanical properties of the joints were investigated. Defect-free joints were received when the Si3N4/42CrMo steel joints were brazed with Ag–Cu–Ti + Mo composite filler. The results show that a continuous reaction layer which is composed of TiN and Ti5Si3 was formed near the Si3N4 ceramic. A double reaction layer which consists of Fe2Ti and FeTi was also formed adjacent to 42CrMo steel, with Fe2Ti being located near the steel. The central part of the joint is composed of Ag based solid solution, Cu based solid solution, Mo particles and some Cu–Ti intermetallic compounds. The maximal bending strength reached 587.3 MPa with 10 vol.% Mo particles in the joint, at which the joint strength was 414.3% higher than the average strength for the case without Mo particles addition. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
