Journal ArticleDOI
Deformation behavior of high Nb containing TiAl based alloy in α + γ two phase field region
TLDR
In this article, the deformation mechanism of α phase is dynamic recovery at 1275°C, whereas γ phase is mainly dynamic recrystallized, and the reasons of the different deformation behavior between 1225°C and 1275 ǫ c, as well as the difference deformation behaviour between α and γ phases are analyzed.About:
This article is published in Materials & Design.The article was published on 2016-01-15. It has received 63 citations till now. The article focuses on the topics: Deformation (meteorology) & Deformation mechanism.read more
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Recrystallization mechanisms and microstructure development in emerging metallic materials: A review
TL;DR: In this article, the authors present a concise and systematic review of the recrystallization in emerging materials with a view to reconcile its manifestations with trends established from recrylistization studies in traditional alloys.
Journal ArticleDOI
Hot pack rolling nearly lamellar Ti-44Al-8Nb-(W, B, Y) alloy with different rolling reductions: Lamellar colonies evolution and tensile properties
TL;DR: In this article, the relationship of the microstructure and tensile properties between the rolling conditions was investigated by fabricating Ti-44Al-8Nb-(W, B, Y) alloy sheets under different rolling conditions.
Journal ArticleDOI
Enhanced high-temperature tensile property by gradient twin structure of duplex high-Nb-containing TiAl alloy
TL;DR: In this article, a pre-deformation process was employed for a TiAl alloy via high-temperature torsion, in which the stability of the constituent phases was tailored, resulting in enhanced hardening capability and ductility via a gradient microstructure.
Journal ArticleDOI
The improved properties and microstructure of β-solidify TiAl alloys by boron addition and multi steps forging process.
TL;DR: A novel forging process has been designed for better mechanical properties of Ti-43Al-6Nb-1Mo-1Cr-(0,0.6)B alloys, which could provide much finer microstructure, higher room-temperature strength, increased high-tem temperature strength and elongation with these alloys.
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The microstructure, mechanical properties, and oxidation behavior of beta-gamma TiAl alloy with excellent hot workability
TL;DR: In this article, a new type beta-gamma TiAl alloy of nominal composition of Ti-44Al-4Nb-4V-0.3Mo-Y (at%) was fabricated by induction skull melting, which was designed based on the study of the microstructural effects of Mo, Cr, V, and Nb on TiAl Alloy.
References
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Journal ArticleDOI
Microstructure and deformation of two-phase γ-titanium aluminides
TL;DR: In this paper, the current knowledge on dislocation types and slip systems, the development of deformation substructures, factors controlling the mobility and multiplication of dislocations, interface related plasticity, solid solution and precipitate strengthening mechanisms as well as microscopic aspects of creep and fracture are addressed.
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Processing and applications of intermetallic γ-TiAl-based alloys
Helmut Clemens,Heinrich Kestler +1 more
TL;DR: In this paper, the authors proposed a high-temperature materials for the next generation of aircraft engines, space vehicles, and automotive engines, and showed that intermetallic γ-TiAl-based alloys show a great potential to fulfill these demands.
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Microstructural design and mechanical properties of a cast and heat-treated intermetallic multi-phase γ-TiAl based alloy
Emanuel Schwaighofer,Helmut Clemens,Svea Mayer,Janny Lindemann,Joachim Klose,Wilfried Smarsly,Volker Güther +6 more
TL;DR: In this article, the effect of phase transformations and chemical driving forces due to phase imbalances between different heat treatment steps and compares the mechanical properties to those obtained for forged and heat-treated material.
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Alloy design concepts for refined gamma titanium aluminide based alloys
TL;DR: In this paper, the influence of the Al content and the addition of further alloying elements on the cast microstructure of γ(TiAl)+α 2 (Ti 3 Al) alloys has been examined.
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The Al–B–Nb–Ti system: IV. Experimental study and thermodynamic re-evaluation of the binary Al–Nb and ternary Al–Nb–Ti systems
TL;DR: In this article, a re-evaluation of the constituent binary Al-Nb system was performed using the Thermo-Calc software using the proposed description of the Gibbs energy of all individual phases.