MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
In Situ TEM Observation of Structural Changes in Rapidly Solidified bcc Solid-Solution Phase in Ti–Cr Alloy Focusing on Spontaneous Vitrification (SV)
Takeshi NagaseSatoshi AnadaKeita KobayashiHidehiro YasudaHirotaro Mori
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2014 Volume 55 Issue 3 Pages 451-457

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Abstract

Changes in the structure of the rapidly solidified body-centered-cubic (bcc) solid-solution phase in Ti–Cr alloy were investigated in order to determine whether or not the unique heat-induced amorphization (i.e., SV) actually occurs. Annealing-induced amorphization of the single solid-solution phase was not observed during either ex situ isothermal annealing at 873 K or in situ annealing experiments in HVEM. The previously reported SV may not correspond to the formation of an amorphous phase but could actually be due to the formation of a finely grained polycrystalline structure during the decomposition of the bcc solid-solution phase.

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© 2013 The Japan Institute of Metals and Materials
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