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Superplastic forming at high strain rates after severe plastic deformation

✍ Scribed by Z Horita; M Furukawa; M Nemoto; A.J Barnes; T.G Langdon


Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
495 KB
Volume
48
Category
Article
ISSN
1359-6454

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## Abstract Coarse‐grained Cu99.99 was prestrained by __Ξ΅__~pre~ in multiple compression in three orthogonal directions at room temperature. While the flow stress __Οƒ__ saturates at __Ξ΅__~pre~ β‰ˆ 2, the strain rate sensitivity of __Οƒ__ at 318 K increases by a factor of β‰ˆ 2.7 from __Ξ΅__~pre~ = 2 to 7