Journal of Materials Science

, Volume 54, Issue 8, pp 6552–6564 | Cite as

Diffusion bonding of nickel-based superalloy GH4099 with pure nickel interlayer

  • Jiangtao XiongEmail author
  • Lin Yuan
  • Yuan Zhu
  • Hao Zhang
  • Jinglong Li


The nickel-based superalloy GH4099 was diffusion-bonded with 2–10 μm thick pure nickel interlayer. The joint microstructure was characterized by scanning electron microscopy, electron probe micro-analyzer and electron backscattered diffraction; the joint mechanical properties were evaluated by nanoindentation, tensile and Charpy impact tests. It was observed that with the reduction in interlayer thickness, element distribution and hardness across the joining interface became more homogeneous and subsequently produced sound joints due to the suppression of precipitated carbides on joining interface. The strengths of joints were in the range of the base metal as-received. When bonding time or temperatures increased, the bond line of the 2 μm interlayer joint was partially eliminated by the recrystallization across the joining interface, and the strength and elongation (or the absorbed energy) of the joint were same as (or close to) the base metal which underwent the same heating process. However, due to the microstructure degradation induced by the grain coarsening, the absorbed energy of the 2 μm interlayer joint reaches the maximum when the joint bonded under the moderate condition of 1120 °C and 90 min.



This work is supported by the research fund of the National Natural Science Foundations of China (Grant Nos. 51575451, 51475376 and U1737205) and the State Key Laboratory of Solidification Processing (NWPU, China) (Grant No. 141-TZ-2016).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Shaanxi Key Laboratory of Friction Welding TechnologiesNorthwestern Polytechnical UniversityXi’anPeople’s Republic of China
  2. 2.Shanghai Institute of Radio EquipmentShanghaiPeople’s Republic of China

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