ω-phase within α2+γ lamellar structure in Ti-45Al-10Nb alloy

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作者：
Song, H.
Meng, X.
He, L.
Ye, H.
Zhang, W.
Chen, G.
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来源：
Jinshu Xuebao/Acta Metallurgica Sinica | 2001年 / 37卷 / 08期
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摘要：
ω-phase in α2+γ lamellar structure of Ti-45Al-10Nb alloy (atomic fraction, %) was investigated by high resolution electron microscopy (HREM). The orientation relationship between ω phase and α2+γ lamella was identified as [0001]ω // [Left Angle Bracket] 112 over-bar 0 [Right Angle Bracket] α2 // [Left Angle Bracket] 11 over-bar 0 [Right Angle Bracket] γ, {112 over-bar 0}ω // (0002)α2 // {111}γ. The ω phase with B82 structure further evolved to ω* phase with D88 structure in α2 lamella. It is possible that α2 -> ω direct transition occurred in lamellar structure.
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页码：805 / 809
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