Low-Temperature and high-Strain-Rate superplasticity of ultrafine-Grained A7075 processed by high-Pressure torsion

Seungwon Lee; Katsumi Watanabe; Kenji Matsuda; Zenji Horita

doi:10.2320/matertrans.L-M2018825

Low-Temperature and high-Strain-Rate superplasticity of ultrafine-Grained A7075 processed by high-Pressure torsion

Seungwon Lee, Katsumi Watanabe, Kenji Matsuda, Zenji Horita

Materials Processing

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

An A7075 alloy was processed by high-pressure torsion (HPT) under an applied pressure of 6 GPa for 1, 3 and 5 revolutions with a rotation speed of 1 rpm at room temperature. Vickers microhardness saturated to a level of 220 Hv after the HPT processing and the grain size was refined to ³120 nm at the state of the hardness saturation. Tensile tests were conducted with initial strain rates from 2.0

Original language	English
Pages (from-to)	1341-1347
Number of pages	7
Journal	Materials Transactions
Volume	59
Issue number	8
DOIs	https://doi.org/10.2320/matertrans.L-M2018825
Publication status	Published - Jan 1 2018

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All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

Lee, S., Watanabe, K., Matsuda, K., & Horita, Z. (2018). Low-Temperature and high-Strain-Rate superplasticity of ultrafine-Grained A7075 processed by high-Pressure torsion. Materials Transactions, 59(8), 1341-1347. https://doi.org/10.2320/matertrans.L-M2018825

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10.2320/matertrans.L-M2018825