High-pressure torsion using ring specimens

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 2008 English Publisher:Elsevier BVJournal:Scripta Materialia, volume 58, pages 469-472 (issn: 1359-6462,

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Authors: Yosuke Harai; Yuki Ito; Zenji Horita;

doi: 10.1016/j.scriptamat.2007.10.037

High-pressure torsion using ring specimens

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Abstract

A facility is developed for high-pressure torsion (HPT) using ring samples and the results are compared with those of conventional disk HPT samples. With pure Al (99.99%), both types of HPT are consistent. When hardness values are plotted against equivalent strain, they fall on a single line having a maximum at a strain of ∼2 followed by a steady-state at a strain of ∼6 or more where hardness remains constant with straining.

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Kyushu University
Japan

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