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Diffusion Bonding of TiC cermet to Stainless Steel using Impulse Pressuring with Ti-Nb Interlayer
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College of Material Science and Engineering,Chongqing University,College of Material Science and Engineering,Chongqing University

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National Natural Science Foundation of China (Project No.: 51205428)

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    Abstract:

    :Impulse pressuring diffusion bonding (IPDB) of TiC cermet to stainless steel 06Cr19Ni10 using Ti-Nb interlayer was carried out in an attempt to reduce the bonding time and alleviate the detrimental effect of interfacial reaction products on bonding strength. Successful bonding was achieved at 890℃ under a pulsed pressure of 2~10MPa within a duration of only 4~12min, which was notably shortened in comparison with conventional diffusion bonding. Microstructure characterization revealed the existence of the σ phase with a limit solubility of Nb, (β-Ti, Nb) phase, and solid solution of Ni in α β-Ti in the reaction zone. Maximum shear strength of 110MPa was obtained when the joint was bonded for 10min, indicating a robust metallurgical bonding was achieved. Upon shear loading, the joints fractured along the remnant Ti/ α β-Ti interfaceand extended to the interior of TiC cermet in a brittle cleavage manner. This technique provides a highly promising bonding method of TiC cermet and steel.

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[Li Jia, Sheng Guangmin. Diffusion Bonding of TiC cermet to Stainless Steel using Impulse Pressuring with Ti-Nb Interlayer[J]. Rare Metal Materials and Engineering,2017,46(4):882~887.]
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History
  • Received:December 31,2014
  • Revised:January 11,2015
  • Adopted:February 06,2015
  • Online: August 04,2017
  • Published: