Intragranular nucleation sites of massive gamma grains in a TiAl-based alloy

Suhash Ranjan Dey, E. Bouzy, A. Hazotte

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Massive gamma grains were generated in a TiAl-based alloy through ice-water quenching from the alpha domain. Apart from those located along alpha(2)/alpha(2) grain boundaries, a few massive gamma grains were detected inside the alpha(2) grains. Some of these intragranular grains were revealed to be attached to particular alpha(2) twins (K-1: "{212103}" eta(1): < 5146 >), in a Blackburn orientation relationship with them. Others were identified as developing in feathery colonies of similar crystallographic orientation. Whatever the nucleation site, further growth of all massive gamma grains involves successive twinning on < 111 >(gamma) planes. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
    Original languageEnglish
    JournalScripta Materialia
    Volume57
    Issue number4
    Pages (from-to)365-368
    ISSN1359-6462
    DOIs
    Publication statusPublished - 2007

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