The decomposition of hexagonal martensite in a titanium-copper alloy

The decomposition of hexagonal martensite formed in a Ti-6.7 wt pct Cu alloy is investigated experimentally using transmission electron microscopy. It is found that during aging at 923 K, martensite exhibits compositional fluctuations involving the formation of a metastable phase before the equilibr...

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Bibliographic Details
Published in:Scripta metallurgica 1985-03, Vol.19 (3), p.319-322
Main Authors: Bhaskaran, T.A., Krishnan, R.V., Srinivasa Raghavan, K.
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Metals, semimetals and alloys
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Physics
Specific materials
Treatment of materials and its effects on microstructure and properties
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Summary:The decomposition of hexagonal martensite formed in a Ti-6.7 wt pct Cu alloy is investigated experimentally using transmission electron microscopy. It is found that during aging at 923 K, martensite exhibits compositional fluctuations involving the formation of a metastable phase before the equilibrium Ti2Cu structure is attained. Aging at higher temperatures (998-1053 K) produces both lamellar and nonlamellar precipitates with Ti2Cu structure; intermediate stages of precipitation, however, are not observed.
ISSN:0036-9748
DOI:10.1016/0036-9748(85)90322-9