Experimental and numerical results for diffusion bonded joints

Esfakur Rahman, M. N. Cavalli

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Commercially pure Fe and Ni have been diffusion bonded. Pure Cu (99.999%) and Au-20Sn eutectic alloys have been used to bond Fe while Cu has been used to bond Ni. Fe bonded using Cu at 1071 °C for 10 h showed ∼20 μm thick residual Cu in the bond centerline. However, at 1100 °C bonding temperature for 10 h the residual Cu disappeared and the Cu content of the joint centerline was ∼7wt.%. Although Sn forms intermetallics with both Fe and Au, no intermetallics were found when Au-20Sn eutectic was used to bond Fe at 600-650 °C for 10h. Ni bonded at 1071°C for 10h contained 40 wt.% Cu in the joint centerline with the Cu content decreasing gradually with increasing distance from the bondline. Cu content in the bond centerline decreased to 35wt.% at 1100 °C for 10 h. The concentration profiles of Cu in a Ni-Cu diffusion couple were simulated with DICTRA/Thermocalc The simulated profiles were comparable to the experimental profiles. The ultimate tensile strengths obtained for Fe-Cu system were 245 and 276 MPa at 1085±1 and 1090±1°C for 10 h, respectively.

Original languageEnglish (US)
Title of host publicationExperimental and Applied Mechanics - Proceedings of the 2011 Annual Conference on Experimental and Applied Mechanics
Pages545-551
Number of pages7
Volume6
Publication statusPublished - Dec 1 2011
Event2011 SEM Annual Conference on Experimental and Applied Mechanics - Uncasville, CT, United States
Duration: Jun 13 2011Jun 16 2011

Other

Other2011 SEM Annual Conference on Experimental and Applied Mechanics
CountryUnited States
CityUncasville, CT
Period6/13/116/16/11

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All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Computational Mechanics
  • Mechanical Engineering

Cite this

Rahman, E., & Cavalli, M. N. (2011). Experimental and numerical results for diffusion bonded joints. In Experimental and Applied Mechanics - Proceedings of the 2011 Annual Conference on Experimental and Applied Mechanics (Vol. 6, pp. 545-551)