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Superplastic blow forming of 2219 aluminium alloy

  • R. Kaibyshev
  • , I. Kazakulov
  • , D. Gromov
  • , D. R. Lesuer
  • , T. G. Nieh

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

Superplasticity in 2219 aluminum alloy was achieved through thermomechanical processing. Tension tests showed that the alloy exhibits superplastic behavior in the temperature range of 450-540°C and strain rates ranging from 2.2×l0-5 to 1.1×10-1 s -1. A maximum elongation-to-failure of 670% was recorded at 500°C and at the initial strain rate of 2.2×10-4 s-1. High cavitation level and intensive grain growth were observed. Sheet of the 2219 aluminum alloy was blow formed into conical shape using two different methods: simple negative and backpressure forming. A strain of 2.1 was obtained at 500°C under the backpressure blow forming condition. It was found that elongation to failure under blow forming with backpressure is about 1.5 times higher than that under a simple female forming. Microstructural evolution of blow formed parts was also examined.
Original languageEnglish
Pages (from-to)265-270
JournalMaterials Science Forum
Volume447-448
DOIs
Publication statusPublished - 2004
Externally publishedYes
EventSuperplasticity in Advanced Materials: 8th International Conference on Superplasticity in Advanced Materials, ICSAM 2003 - Oxford, United Kingdom
Duration: 28 Jul 200330 Jul 2003

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

  • Aluminum Alloys
  • Blow-Forming
  • Microstructure Evolution
  • Superplasticity

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