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Grain refinement and superplasticity in an aluminum alloy processed by high-pressure torsion

✍ Scribed by Genki Sakai; Zenji Horita; Terence G. Langdon

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
489 KB
Volume
393
Category
Article
ISSN
0921-5093

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πŸ“œ SIMILAR VOLUMES

Grain refinement and superplastic flow i
Grain refinement and superplastic flow in an aluminum alloy processed by high-pressure torsion
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An aluminium-2024 alloy was prepared in the annealed and the solution treated conditions. Specimens in both conditions were processed by high-pressure torsion (HPT) at temperatures of either 293 or 673 K giving grain sizes for both conditions of ∼0.15 and ∼0.30 m for these two processing temperature

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Experiments were conducted on an Al-3 wt.% Mg-0.2 wt.% Sc alloy and pure Cu to evaluate the effect of high-pressure torsion (HPT). The results show that very substantial grain refinement is achieved in both materials with as-strained grain sizes of ∼150 and ∼140 nm, respectively. Microhardness measu