Requirements for achieving high-strain-rate superplasticity in cast aluminium alloys

Patrick B. Berbon, Minoru Furukawa, Zenji Horita, Minoru Nemoto, Nikolai K. Taenev, Ruslan Z. Valiev, Terence G. Lanodon

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Abstract

Equal-channel angular (ECA) pressing has been used to introduce a very small grain size into a commercial cast Al-Mg-Li-Zr alloy. Tensile testing reveals the potential for achieving sup2erp1lastic ductilities in this alloy at very high strain rates (greater than 10-1s-2) but experiments show that this potential is realized only if a sufficiently high strain is introduced during the ECA pressing such that the microstructure is homogeneous and consists of an array of grains having large-angle grain boundaries.

Original languageEnglish
Pages (from-to)313-316
Number of pages4
JournalPhilosophical Magazine Letters
Volume78
Issue number4
DOIs
Publication statusPublished - Jan 1 1998

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Berbon, P. B., Furukawa, M., Horita, Z., Nemoto, M., Taenev, N. K., Valiev, R. Z., & Lanodon, T. G. (1998). Requirements for achieving high-strain-rate superplasticity in cast aluminium alloys. Philosophical Magazine Letters, 78(4), 313-316. https://doi.org/10.1080/095008398177896