MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Deformation Mechanism of Severely Deformed CP-Titanium by Uniaxial Compression Test
Eunji YuInyoung KimDong Hyuk ShinJongryoul Kim
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2008 Volume 49 Issue 1 Pages 38-40

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Abstract

Conventional uniaxial compression test, designed to yield an effective strain of ∼1, was carried out to understand the deformation mechanism of severely deformed commercial pure titanium at various temperatures. TEM analysis showed that only [10\\bar11] twins accompanied with ⟨a⟩ slip dislocations were activated on non-basal planes in samples compressed at 573 and 623 K. In particular, the whole area of the sample compressed at 623 K were covered with [10\\bar11] twin bands with a width of 200 nm. However, ⟨a+c⟩ slip instead of [10\\bar11] twinning were found in samples compressed at 673 and 823 K. This indicates that [10\\bar11] twinning plays an important role in accommodating severe plastic strain before the activation temperature of ⟨a+c⟩ slip.

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© 2008 The Japan Institute of Metals and Materials
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