Modulated microstructure in Ti-22Al-11Nb-4Mo alloy
- National Research Inst. for Metals, Tsukuba, Ibaraki (Japan)
In the previous two decades, considerable effort has been made to develop the Ti{sub 3}Al({alpha}{sub 2})-based and TiAl({gamma})-based titanium aluminides for the elevated temperature applications. However, the application is limited by the low ductility of these alloys at low temperature. During the systematic investigation in the effect of the compositional modification on the physical and mechanical properties of Ti-22Al-27Nb alloy, the authors found that a modulated microstructure was formed in a Ti-22Al-11Nb-4Mo alloy when this alloy was subjected to the water-quenching from above the {beta} transus temperature and subsequent aging in the temperature range up to around 950 C. In this paper, the evolution of modulated microstructure and associated change in Vickers hardness with various heat treatment conditions are presented.
- OSTI ID:
- 349874
- Journal Information:
- Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 4 Vol. 40; ISSN 1359-6462; ISSN SCMAF7
- Country of Publication:
- United States
- Language:
- English
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