Characterisation of γ' across inertia friction welded Alloy 720Li

M. Preuss, J. Quinta Da Fonseca, I. Kyriakoglou, P. J. Withers, G. J. Baxter

Research output: Contribution to conferencePaper

7 Citations (Scopus)

Abstract

The study of the γ in inertia friction welded Alloy 720Li in the as-welded and two different PWHT conditions was presented. The high energy synchrotron diffraction measurements revealed that in the as-welded condition, the HAZ was depleted in γ with a trough observed at about 1.5 mm from the weld line. Hardness profile was recorded in order to map the variation of strength across weld line. The microstructure was studied by means of high-energy synchrotron diffraction and high resolution electron microscopy. The results show that as-welded condition exhibited slightly increased lattice misfit between γ and γ at the weld line and 2.5 m from it, which seems to increase the strength of the material.

Original languageEnglish
Pages477-484
Number of pages8
Publication statusPublished - 2004
Externally publishedYes
EventInternational Symposium on Superalloys 2004 - Champion, United States of America
Duration: 19 Sep 200423 Sep 2004
Conference number: 10th

Conference

ConferenceInternational Symposium on Superalloys 2004
Abbreviated titleSuperalloys 2004
CountryUnited States of America
CityChampion
Period19/09/0423/09/04

Keywords

  • Alloy 720Li
  • Gamma prime
  • Inertia friction welding

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