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Microstructure and Mechanical Properties of PDC Cutters Vacuum Brazed by AgCuInTi Filler Metal
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1.College of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China;2.State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;3.College of Materials Science and Engineering, Xi'an Shiyou University, Xi'an 710065, China;4.CCTEG Xi'an Research Institute (Group) Co., Ltd, Xi'an 710077, China;5.Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi'an 710072, China;6.School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450011, China;7.School of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, China

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Fund Project:

National Natural Science Foundation of China (52075551, 52271045, 51975469); Supported by State Key Laboratory of Advanced Welding and Joining (AWJ-22M09); Supported by State Key Laboratory of Advanced Brazing Filler Metals and Technology (SKLABFMT201904); Key Research and Development Program of Shaanxi Province (2022GY-224); Innovative Talent Recommendation Program (Youth Science and Technology New Star Project) of Shaanxi Province (2020 KJX X-045)

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    Abstract:

    Polycrystalline diamond compact (PDC) cutters and carbon steel were brazed by AgCuInTi filler metal under vacuum condition. The effects of brazing temperature on the wettability of base metal and shear strength of joints were investigated. Besides, the joint's interface microstructure, composition, and phases were analyzed. Results show that the AgCuInTi filler metal exerts a good wetting effect to the surface of cemented carbide and steel. With the increase in brazing temperature, the wetting angle decreases and the spreading area increases. The suitable temperature for vacuum brazing of PDC cutters is 770 °C, and the maximum shear strength is 228 MPa at this temperature.

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[Wen Guodong, Wang Shiqing, Zhang Suhui, Qi Junlei, Chen Haiyan, Wang Xingxing, Xu Dong. Microstructure and Mechanical Properties of PDC Cutters Vacuum Brazed by AgCuInTi Filler Metal[J]. Rare Metal Materials and Engineering,2025,54(5):1177~1184.]
DOI:10.12442/j. issn.1002-185X.20240207

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History
  • Received:April 09,2024
  • Revised:July 01,2024
  • Adopted:July 10,2024
  • Online: May 23,2025
  • Published: May 22,2025