Rapid joining of commercial-purity Ti to 304 stainless steel using joule heating diffusion bonding: Interfacial microstructure and strength of the dissimilar joint

K. T. Suzuki, Y. S. Sato, S. Tokita

Research output: Contribution to journalArticlepeer-review

Abstract

A new solid-state bonding technique, Joule heating diffusion bonding, was used for the dissimilar bonding of commercial-purity Ti to 304 stainless steel within a short time without macroscopic deformation of the workpieces. The tensile strengths of the joints produced at various bonding parameters were examined at room temperature, and the microstructures of the joints and the fracture surfaces were analyzed to clarify the effect of the microstructural factors on the tensile strength of the joints. The tensile strength of the joints increased with the increase in the fraction of the sufficiently bonded interface. In the joints with the well-bonded interface, the tensile strength decreased with the increase in the thickness of the brittle Fe-Ti-type intermetallic compound layers at the joint interface. This study suggested that the high tensile strength could be achieved in the Joule heating diffusion bonded joints with the well-bonded interface where the thickness of the Fe-Ti-type intermetallic compound layers was thinner than 0.5 µm.

Original languageEnglish
Article number1689
Pages (from-to)1-11
Number of pages11
JournalMetals
Volume10
Issue number12
DOIs
Publication statusPublished - 2020 Dec

Keywords

  • 304 stainless steel
  • Commercial-purity titanium (CP-Ti)
  • Dissimilar bonding
  • Joule heating diffusion bonding
  • Mechanical property
  • Microstructure

ASJC Scopus subject areas

  • Materials Science(all)

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