Interface structure and mechanical properties of the brazed joint of TiC cermet and steel |
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| Affiliation: | 1. State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China;2. Institute for Energetics and Interphases, IENI-CNR, Via De Marini 6, 16149 Genoa, Italy;3. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China;4. School of Material Science and Engineering, Henan University of Science and Technology, Luoyang 471003, China;1. Center for Advanced Engineering Research, Majlesi Branch, Islamic Azad University, Isfahan, Iran;2. Young Researchers and Elites Club, Saveh Branch, Islamic Azad University, Saveh, Iran;3. Department of Advanced Materials, WorldTech Scientific Research Center (WT-SRC), Tehran, Iran;4. Faculty of Materials Engineering, Islamic Azad University, Najafabad Branch, Isfahan, Iran;1. The University of Manchester, School of Materials, Oxford Road, Manchester, M13 9PL, UK;2. Rolls-Royce plc, Derby, Derbyshire, DE24 8BJ, UK |
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| Abstract: | A commercially available Ag–Cu braze alloy foil with Zn was used to join TiC cermet and steel. According to the experimental observations, the interface structure is (Cu, Ni)/Ag (s.s.) + Cu (s.s.)/(Cu, Ni)/(Cu, Ni) + (Fe, Ni) from TiC cermet to steel side. With increased brazing temperature or time, the amounts of (Cu, Ni) near the base metals/Ag–31Cu–23Zn interface and (Cu, Ni) + (Fe, Ni) near the Ag–31Cu–23Zn/steel interface increase, while the amount of Ag (s.s.) + Cu (s.s.) in the middle of the braze alloy decreases. The whole joining process consists of diffusion and solution among atoms of the braze alloy foil and base metals. The maximum shear strength is 120.7 MPa for the joint brazed at 850 °C for 10 min. |
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