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

doi:10.1080/095008398177896

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

Research output: Contribution to journal › Article › peer-review

82 Citations (Scopus)

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 su₋p₂er₋p₁lastic 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 language	English
Pages (from-to)	313-316
Number of pages	4
Journal	Philosophical Magazine Letters
Volume	78
Issue number	4
DOIs	https://doi.org/10.1080/095008398177896
Publication status	Published - Oct 1998

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1080/095008398177896

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AU - Taenev, Nikolai K.

AU - Valiev, Ruslan Z.

AU - Lanodon, Terence G.

PY - 1998/10

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AB - 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 su−p2er−p1lastic 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.

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

Abstract

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