Developing a superplastic forming capability in nanometals

Cheng Xu, Minoru Furukawa, Zenji Horita, Terence G. Langdon

Research output: Contribution to journalArticle

Abstract

Exceptionally high superplastic ductilities may be achieved in metallic alloys when the microstructure consists of very small and reasonably equiaxed arrays of grains separated by grain boundaries having high angles of misorientation. It is now well established that processing through the application of severe plastic deformation provides the potential for achieving submicrometer or nanometer grain sizes in bulk solids, where these grain sizes are generally significantly lower than those attained using conventional thermomechanical processing. This paper describes the development of a superplastic forming capability in three different aluminum-based alloys by processing using the technique of equal-channel angular pressing (ECAP) in which a material is subjected to a high imposed strain by pressing repetitively through a die. Processing by ECAP can be used to achieve superplastic ductilities in these alloys because precipitates are present within the matrix and they serve to retain the ultrafine grain sizes at elevated temperatures.

Original languageEnglish
Pages (from-to)23-30
Number of pages8
JournalSolid State Phenomena
Volume101-102
Publication statusPublished - Jan 1 2005

Fingerprint

superplastic forming
pressing
Equal channel angular pressing
grain size
Processing
ductility
Ductility
Aluminum
misalignment
plastic deformation
Precipitates
precipitates
Plastic deformation
Grain boundaries
grain boundaries
aluminum
microstructure
Microstructure
matrices
Temperature

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Xu, C., Furukawa, M., Horita, Z., & Langdon, T. G. (2005). Developing a superplastic forming capability in nanometals. Solid State Phenomena, 101-102, 23-30.

Developing a superplastic forming capability in nanometals. / Xu, Cheng; Furukawa, Minoru; Horita, Zenji; Langdon, Terence G.

In: Solid State Phenomena, Vol. 101-102, 01.01.2005, p. 23-30.

Research output: Contribution to journalArticle

Xu, C, Furukawa, M, Horita, Z & Langdon, TG 2005, 'Developing a superplastic forming capability in nanometals', Solid State Phenomena, vol. 101-102, pp. 23-30.
Xu C, Furukawa M, Horita Z, Langdon TG. Developing a superplastic forming capability in nanometals. Solid State Phenomena. 2005 Jan 1;101-102:23-30.
Xu, Cheng ; Furukawa, Minoru ; Horita, Zenji ; Langdon, Terence G. / Developing a superplastic forming capability in nanometals. In: Solid State Phenomena. 2005 ; Vol. 101-102. pp. 23-30.
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