A fully quantitative characterization of the heat affected zone in a welded aluminium copper alloy

Richard Martukanitz, P. R. Howell

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

Abstract

Transmission electron microscopy has been used to develop a fully quantitative understanding of the distribution of the θ′ phase in the heat affected zone of 2219-T87 alloy. Thin foils were prepared from various locations within the heat affected zone, and the θ′ precipitates were characterized in terms of number density, size, and volume fraction. The variations in these latter parameters, along with distance from the fusion zone, have been correlated with known thermal histories experienced within these regions. It is shown that the microstructures in the heat affected zone are dominated by dissolution of θ′ during the heating portion of the thermal cycle and by anisothermal growth of particle remnants during cooling. Guinier-Preston zones were found to precipitate in the region of the heat affected zone which was immediately adjacent to the fusion zone interface.

Original languageEnglish (US)
Title of host publicationAnalysis of In-Service Failures and Advances in Microstructural Characterization
EditorsE. Abramovici, D.O. Northwood, M.T, Shehata, J. Wylie, D.O. Northwood, E. Abramovici, M.T. Shehata, J. Wylie
Pages475-480
Number of pages6
Volume26
StatePublished - 1998
EventProceedings of the Thirty First Annual Technical Meeting of the International Metallographic Society - Ottawa, Ont., Canada
Duration: Jul 26 1998Jul 29 1998

Other

OtherProceedings of the Thirty First Annual Technical Meeting of the International Metallographic Society
CountryCanada
CityOttawa, Ont.
Period7/26/987/29/98

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Martukanitz, R., & Howell, P. R. (1998). A fully quantitative characterization of the heat affected zone in a welded aluminium copper alloy. In E. Abramovici, D. O. Northwood, M. T. Shehata, J. Wylie, D. O. Northwood, E. Abramovici, M. T. Shehata, & J. Wylie (Eds.), Analysis of In-Service Failures and Advances in Microstructural Characterization (Vol. 26, pp. 475-480)