Journal ArticleDOI
Effects of aluminum content and microstructure on tensile properties of TiAl alloys
T. Kumagai,M. Nakamura +1 more
TLDR
In this paper, the effect of microstructure on the room temperature tensile properties of polycrystalline Ti-49 and 51A1 alloys were investigated in vacuum, where aging in the γ single-and γ + α two-phase fields, followed by air cooling or controlled cooling (5K/min), results in three types of microstructures: type (I), equiaxed γ grain structure, type (II), γgrain structure with α 2 γ laths formed mainly at the ǫ grain boundaries, and type (About:
This article is published in Scripta Materialia.The article was published on 1996-04-01. It has received 16 citations till now. The article focuses on the topics: Grain boundary & Grain size.read more
Citations
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Journal ArticleDOI
Phase transitions and compression properties of Ti2AlC/TiAl composites fabricated by combustion synthesis reaction
TL;DR: In this paper, the phase transitions in the TiAl and the Ti-Al-C/TiAl systems are investigated by the differential thermal analysis (DTA) and X-ray diffraction (XRD).
Journal ArticleDOI
Effect of MoO3 on microstructure and mechanical properties of (Ti,Mo)Al/Al2O3 composites by in situ reactive hot pressing
TL;DR: In this article, the effect of MoO 3 content on the microstructure and mechanical properties of (Ti,Mo)Al/Al 2 O 3 composites was investigated in detail.
Journal ArticleDOI
Study of effect of Mn addition on the mechanical properties of Ti2AlC/TiAl composites through first principles study and experimental investigation
TL;DR: In this article, the effect of Mn atoms on the mechanical properties of the Ti2AlC/TiAl composites was investigated by experiments and first principles calculations, and the results showed that the addition of Mn remarkably improves the ductility of the composites.
Journal ArticleDOI
Compression properties and work-hardening behavior of Ti2AlC/TiAl composites fabricated by combustion synthesis and hot press consolidation in the Ti–Al–Nb–C system
TL;DR: In this article, the effect of the (Nb-C) content on the compression properties and work-hardening behavior of the composites has been investigated and it was shown that the TiAl alloy improved remarkably with the addition of the Nb−C elements due to the formation of Ti 2 AlC particles and the solid solution of Nb in the Ti-Al matrix.
Journal ArticleDOI
Fabrication and characterization of in-situ TiAl matrix composite with controlled microlaminated architecture based on SiC/Al and Ti system
TL;DR: In this paper, the phase transitions and reaction mechanisms at various annealing stages were investigated for microlaminated composite sheets consisting of alternating TiAl and carbide-layers.
References
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Journal ArticleDOI
Phase equilibria and transformations in intermediate titaniumaluminum alloys
S.A. Jones,Michael J. Kaufman +1 more
TL;DR: The phase equilibria and solid state phase transformations observed in Ti-Al alloys between 40 and 50 at.% Al are reported in this paper, where it is shown that the three-phase invariant between the high temperature α phase (disordered h.c.p.) and the lower temperature ordered α2-Ti3Al (D019) and γ-TiAl (L10) phases is eutectoid in nature (α → α2 + γ) but that it is difficult to produce this reaction experimentally due to differences in the
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Deformation processes related to interfacial boundaries in two-phase γ-titanium aluminides
TL;DR: In this article, the deformation behavior of two-phase (α2 + γ) titanium aluminide alloys with a lamellar microstructure was investigated by conventional and high-resolution electron microscopy.
Journal ArticleDOI
The influence of second phase Ti3Al on the deformation mechanisms in TiAl
TL;DR: In this paper, it was proposed that the removal of interstitials from TiAl in this way decreases the degree of directionality of bonding between the Ti atoms, and so reduces the anisotropy in Peierls stresses caused by these directional bonds.
Journal ArticleDOI
Hydrogen embrittlement of Ni3Al+B
A.K. Kuruvilla,Norman S. Stoloff +1 more
TL;DR: In this article, an experimental study was conducted to verify the hypothesis that Ni3Al, which exhibits an L1(2) structure and remains ordered up to the melting point, would be severely embrittled by hydrogen and that this effect would be reversible.
Journal ArticleDOI
Plastic deformation of single crystals of a DO19 compound with an off-stoichiometric composition (Ti-36·5 at.% Al) at room temperature
TL;DR: The deformation behavior of a DO19 compound with an off-stoichiometric composition of Ti-36·5 at.% Al has been studied at room temperature both in tension and compression as discussed by the authors.