Development of Ti2AlNb Alloys: Opportunities and Challenges

Chen, W.; Li, J.W.; Xu, Le; Lü, Bin

doi:10.31399/asm.amp.2014-05.p023

Cited by 8 publications

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Effect of Hot Isostatic Pressing and Heat Treatment on Microstructure and Mechanical Properties of Pm Ti‐22Al‐24Nb‐0.5Mo (At.%) Alloy

Wang

Lü

et al. 2016

Proceedings of the 13th World Conference on Titanium

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Ti-22Al-24Nb-0.5Mo (at.%) pre-alloyed powder was prepared by the electrode induction melting gas atomization (EIGA) process. Powder metallurgical (PM) alloy was prepared by hot isostatic pressing (HIP'ing). HIP'ing with different parameters and different post heat treatments were conducted to study their effects on microstructure and mechanical properties of the PM alloy. The microstructure was characterized by optical microscopy, scanning electron microscopy, X-ray Micro Computed Tomography (Micro-CT) and so on. Porosity distribution in the HIP'ed samples, directly influenced by HIP'ing temperature was related to their mechanical properties. The variation of the amount of different phases and the microstructure with post heat treatment was studied in detail, and a good combination of tensile strength, ductility and stress rupture life were obtained through an optimized heat treatment.

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Effect of Hot Isostatic Pressing and Heat Treatment on Microstructure and Mechanical Properties of Pm Ti‐22Al‐24Nb‐0.5Mo (At.%) Alloy

Wang

Lü

et al. 2016

Proceedings of the 13th World Conference on Titanium

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Effect of Temperature and Rate Treatment Parameters on the Structural Phase State and Properties of Ti2AlNb Titanium Aluminide-Based Alloy

Demakov,

Vodolazskii,

Illarionov

et al. 2024

Phys. Metals Metallogr.

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Joint metallothermic reduction of titanium and rare refractory metals of V group

Балакирев

Osinkina

Krasikov

et al. 2021

Izv.VUZ. Tsvet. Met.

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The features of phase formation during the joint aluminothermic reduction of titanium, niobium, tantalum, vanadium from their oxides using methods of thermodynamic modeling, differential thermal and X-ray phase analysis were studied. Computer thermodynamic modeling made it possible to predict the optimal temperature conditions in the metallothermic process, composition and ratio of reagents in the charge, behavior of elements and sequence of phase formation. Thermodynamic calculations were supplemented by differential thermal studies using the combined scanning calorimetry method to identify the kinetic and thermochemical components of the process. An analysis of theoretical and experimental data allowed us to establish that the interaction of aluminum with titanium dioxide proceeds through the stage of titanium monoxide formation and features by the formation of TixAly intermetallic compounds of various compositions (TiAl3, TiAl, Ti2Al) depending on the Al and TiO2 ratio in the charge. When titanium dioxide is partially replaced by niobium, tantalum and vanadium oxides, the metallothermic process during interactions in the Al–TiO2–Nb2O5, Al–TiO2–Ta2O5 and Al–TiO2–V2O5 systems has a similar nature, enters the active phase once liquid aluminum appears, is accompanied by exothermic effects and features by the priority formation of titanium aluminides and binary and ternary intermetallic aluminum compounds with Group 5 rare refractory metals – AlNb3, Al3Nb, Al3Ta, Al3(Ti1–х, Taх), Al3(Ti0,8V0,2). The joint conversion of titanium dioxide and rare refractory metal pentoxides during the reduction process is carried out through sequential and parallel stages of the formation of simple and complex element oxides with low oxidation states.

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Development of Ti2AlNb Alloys: Opportunities and Challenges

Cited by 8 publications

References 0 publications

Effect of Hot Isostatic Pressing and Heat Treatment on Microstructure and Mechanical Properties of Pm Ti‐22Al‐24Nb‐0.5Mo (At.%) Alloy

Effect of Hot Isostatic Pressing and Heat Treatment on Microstructure and Mechanical Properties of Pm Ti‐22Al‐24Nb‐0.5Mo (At.%) Alloy

Effect of Temperature and Rate Treatment Parameters on the Structural Phase State and Properties of Ti2AlNb Titanium Aluminide-Based Alloy

Joint metallothermic reduction of titanium and rare refractory metals of V group

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