High strain rate superelasticity in an Al-Mg alloy containing scandium

Shogo Komura, Patrick B. Berbon, Minoru Furukawa, Zenji Horita, Minoru Nemoto, Terence G. Langdon

Research output: Contribution to journalArticle

124 Citations (Scopus)

Abstract

1. A cast alloy of Al-3% Mg-0.2% Sc was subjected to equal-channel angular pressing at room temperature to a total strain of ∼8. Following ECA pressing, the microstructure was heterogeneous with small areas of subgrains interspersed within larger areas of grains having boundaries with high angles of misorientation. The average grain size was ∼0.2 μm. 2. Static annealing revealed that the microstructure was thermally stable because of the presence of the dilute scandium addition. The grain size remained at <1 μm after annealing for 1 hour at temperatures up to 673 K. 3. The alloy exhibited high strain rate superplasticity with an elongation of 1030% when tested in tension at 673 K using an initial strain rate of 3.3 × 10-2 s-1.

Original languageEnglish
Pages (from-to)1851-1856
Number of pages6
JournalScripta Materialia
Volume38
Issue number12
DOIs
Publication statusPublished - May 12 1998

Fingerprint

Scandium
scandium
pressing
strain rate
Strain rate
grain size
Annealing
superplasticity
Equal channel angular pressing
Superplasticity
microstructure
Microstructure
annealing
cast alloys
misalignment
elongation
Elongation
Grain boundaries
grain boundaries
Temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

Cite this

Komura, S., Berbon, P. B., Furukawa, M., Horita, Z., Nemoto, M., & Langdon, T. G. (1998). High strain rate superelasticity in an Al-Mg alloy containing scandium. Scripta Materialia, 38(12), 1851-1856. https://doi.org/10.1016/S1359-6462(98)00099-2

High strain rate superelasticity in an Al-Mg alloy containing scandium. / Komura, Shogo; Berbon, Patrick B.; Furukawa, Minoru; Horita, Zenji; Nemoto, Minoru; Langdon, Terence G.

In: Scripta Materialia, Vol. 38, No. 12, 12.05.1998, p. 1851-1856.

Research output: Contribution to journalArticle

Komura, S, Berbon, PB, Furukawa, M, Horita, Z, Nemoto, M & Langdon, TG 1998, 'High strain rate superelasticity in an Al-Mg alloy containing scandium', Scripta Materialia, vol. 38, no. 12, pp. 1851-1856. https://doi.org/10.1016/S1359-6462(98)00099-2
Komura S, Berbon PB, Furukawa M, Horita Z, Nemoto M, Langdon TG. High strain rate superelasticity in an Al-Mg alloy containing scandium. Scripta Materialia. 1998 May 12;38(12):1851-1856. https://doi.org/10.1016/S1359-6462(98)00099-2
Komura, Shogo ; Berbon, Patrick B. ; Furukawa, Minoru ; Horita, Zenji ; Nemoto, Minoru ; Langdon, Terence G. / High strain rate superelasticity in an Al-Mg alloy containing scandium. In: Scripta Materialia. 1998 ; Vol. 38, No. 12. pp. 1851-1856.
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