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2 edition of Microstructure and mechanical properties of y-TiAl alloys containing Nb, Mo or Cr found in the catalog.

Microstructure and mechanical properties of y-TiAl alloys containing Nb, Mo or Cr

Yue Gang Li

Microstructure and mechanical properties of y-TiAl alloys containing Nb, Mo or Cr

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Published by University of Birmingham in Birmingham .
Written in English


Edition Notes

Thesis (Ph.D) - University of Birmingham, IRC in Materials for High Performance Applications, School of Metallury and Materials.

Statementby Yue Gang Li.
ID Numbers
Open LibraryOL21123126M

alloy. The solubilities of Cr and Nb are very high in liquid Cu, yet very low in solid Cu. Cr and Nb have tendency to form hardening intermetallic phase, Cr 2Nb, in pure Cu matrix. By the aid of Cr 2Nb intermetallic phase seen in its microstructure in Figure 2, GRCop has a% thermal conductivity that of pure Cu [15,17]. ties of cast aluminium alloy composites containing short basalt fiber of content ranging from Element Si Fe Cu Mn Mg Cr Zn Ti Al % Bal Element SiO 2 Al 2O 3 Fe 2O 3 MgO Microstructure and Mechanical Properties of as Cast Aluminium Alloy /Basalt Dispersed Metal Matrix Composites. Microstructure. Mechanical behaviour of ion–irradiated ordered intermetallic compounds. Three–phase [&bgr; + &bgr;' + y'] Ni–AI–Ti–[Cr,Fe] alloys for high temperature use. High Temperature Deformation and Mechanical Properties. New concepts of analyzing plastic deformation of TiAI and Ni3AI intermetallic compounds. mechanical properties [16,17], deformation [18], thermal properties and oxidation behavior [19,20]. However, information about the microstructure and mechanical properties for eutectic Ti­Si alloys is still limited. Nb is a ­Ti stabilizer, and theβ.


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Microstructure and mechanical properties of y-TiAl alloys containing Nb, Mo or Cr by Yue Gang Li Download PDF EPUB FB2

The effect of Nb content on microstructure, mechanical properties and superelasticity was studied in Ti-Nb alloys fabricated by powder metallurgy route using mechanical alloying and spark plasma sintering.

In the microstructure of the as-sintered materials, undissolved Nb particles as well as precipitations of α-phase at grain boundaries of β-grains were by: 1.

evolution of properties of PM-fabricated Ti-Nb alloys, the aim of the presented work is to analyze the influence of Nb content on the microstructure, mechanical properties and superelastic behavior of Ti-Nb alloys. Experimental In the presented study, Ti ( mesh, %) and Nb ( mesh, %) elemental powders, supplied by Alfa Aesar, wereCited by: 1.

Nb and small amount of other elements (Cr, Ta, Mo, C and B) allows higher resistance to creep and oxidation and remaining the yield strength up to °C [3]. Two-phase microstructure (α2+γ) enables to achieve higher ductility.

Therefore, this third generation of γ-TiAl alloys has great promising high-temperature applications in aircraft and. @article{osti_, title = {Microstructure and mechanical properties of an ultrafine Ti–Si–Nb alloy}, author = {Cao, G.

and Jian, G. and Liu, N. and Zhang, W. and Russell, A. and Gerthsen, D.}, abstractNote = {In this study, Nb-modified ultrafine Ti–Si eutectic alloy was made by cold crucible levitation melting, tested in compression at room temperature, and characterized.

Alloying Effect on Microstructure and Mechanical Properties of Directionally Solidified Ti-Al-Nb Alloy DUAN Qiu-qi, LUAN Qing-dong, LIU Jing, WANG Xiao-guang, PENG Liang-ming CAS Key Laboratory for Mechanical Mo or Cr book and Design of Materials, Department of Modern Mechanics, School of Engineering Science, University of Science and Technology of.

Microstructure, mechanical properties and yield asymmetry of Mg–4Al–2Sn–xY alloys. Materials Science and Technology: Vol. 34, No. 9, pp. A group of Ti–10Mo–nNb alloys (n = 3, 7, 10) were prepared using arc melting and graphite mould n = 3, the as-prepared alloy had a composite microstructure containing an equiaxed β-Ti phase dispersed in a α-Ti n = 7 the as-prepared alloys had microstructure only containing equiaxed β-Ti equiaxed crystal grain of Ti–10Mo–10Nb alloy.

Two-phase titanium alloys constitute very important group of structural materials used in aerospace applications [].Microstructure of these alloys can be varied significantly in the processes of Microstructure and mechanical properties of y-TiAl alloys containing Nb working and heat treatment allowing for fitting their mechanical properties including fatigue behaviour to the specific requirements [].The main types of microstructure are (1) lamellar.

contain third alloying elements such as Nb or Ta that promote strengthening and additionally enhance oxidation resistance. The role of the third alloying elements in two phase alloys is to raise ductility (V, Cr, Mn), oxidation resistance (Nb, Ta) or combined properties.

Additions such as B and Mg can markedly enhance hot Table 1. R.A. Gaisin, V.M. Imayev, R.M. ImayevEffect of hot forging on microstructure and mechanical properties of near α titanium alloy/TiB composites produced by casting J.

Alloys Compd., (), pp. properties of some metals and alloys % % copper and copper alloys 17 17 —. surface microstructure and of mechanical properties. A review can be found for example in Appel’s book [1]. Oxidation processes of TiAl give rise to the following phase sequence in the sub-surface: TiAl – Al depleted zone – TiO 2 +Al 2 O 3 [3, 4].

The Nb and Mo elements which are added to the. Beta Alloys. PROPERTIES AND APPLICATIONS. Alpha Titanium Alloys. Alpha + Beta Titanium Alloys for High Temperature Use. High Strength Alpha + Beta Titanium Alloys.

Beta Titanium Alloys. Titanium Based Intermetallic Compounds. Alpha-2 and Orthorhombic Alloys (~25 at% Al) Gamma Alloys (~50 at% Al) Titanium Production and Inspection.

References. Microstructure and properties of Ti–Nb–V–Mo-alloyed cast iron Figure 2. (a) SEM micrograph of B alloy and (b) EDS analysis of point A in figure 2(a) indicating that it was solute molybdenum inaustenite. Figure 3. XRD diffraction patterns of C alloy. As the amounts of alloy elements increased, microstruc.

element (e.g., Nb, Mo, Cr, V, B, or Si) can have significant effects on the microstructure and the mechanical properties of the alloys4,5. The microstructure is ultimately controlled by the heat treatment, and the cooling rate is particularly important in determining the microstructure of titanium aluminides because phase transformation mechanisms.

The effect of silicon on the diffusion of alloy elements and the interaction effect of carbon and silicon on the microstructure and stress rupture properties of the alloy are analyzed.

The mechanism of Si on the precipitation behavior of carbide phase in Ni-Mo-Cr-Fe corrosion resistant alloy is discussed. The microstructures and mechanical properties of ternary (Ni 75 Al 9 V 16) and multicomponent (Ni 69 Al 9 V Nb 3 Ti Co 4 Cr 4) dual two-phase intermetallic alloys charged with C were investigated by scanning electron microscope, electron probe microscopic analyzer, x-ray diffraction, Vickers hardness, and tensile solubility limits of C in the dual two-phase microstructures.

Gray and Ductile Cast Irons • The gray irons contain wt.% of Si • Microstructure: flake –shape graphite in ferrite matrix • Properties: relatively weak and brittle in tension BUT very effective in damping vibrational energy an high resistive to wear!.

Gray iron. mechanical properties of Nb-Ti-V micr o processing on the microstructure and mechanical properties of Nb-T i thermal treatment on mechanical properties of a novel % Cr. Beta Ti alloys is one of the most attractive biomaterials due to their better corrosion resistance, biocompatibility, greater specific strength and lower elastic modulus than stainless steels and Co-Cr based alloys.

Cr is the strong beta Ti stabilizer and has lower density than Nb, Sn and Ta. In this study As cast TiMo and TixCr with Cr content range 1, 3, 5, and 10 wt.% prepared by. The microstructure and mechanical properties of the TiAl(Nb,Cr,Mo)B alloy in the as-cast state (after gasostatistic processing) and of the TiAl-8NbC alloy after hot extrusion at.

The ultimate oxides of both Ta-free and Ta-containing alloys after °C/ h isothermal oxidation are NiO, NiAl 2O 4 and NiWO 4. Mechanical properties and deformation mechanisms are.

The microstructure, high temperature tensile behavior of the DS NiAl-Cr(Mo)-W/Nb alloy have been investigated.

The transverse microstructure of the alloy consists typically of eutectic colonies of NiAl and Cr(Mo) phase with white phases segregating at the cell boundaries. The white phase is possibly Cr(Mo) phase containing large amount of Nb and W elements.

A series of CoCrFeNiMo x (x =,and ) high-entropy alloys were designed to develop a eutectic high-entropy alloy system and to acquire a superfine eutectic structure. The results show that for the CoCrFeNiMo x alloys, with the increase of Mo content from tothe microstructures shift from a typical dendrite structure to a hypoeutectic microstructure (x = Table I Nickel alloys grouped according to machining characteristics.

Group Group Characteristic Alloy UNS # Ni Cu Fe Cr Mo Co AI Ti Nb Other Alloys containing essentially nickel for caustic alkali chemical Alloy N C 0 08 and electrical a pplications.

The microstructure of a-p titanium alloys such as TI-6Al-4V can be significantly varied by alloying elements, processing parameters and heat treatment conditions. Mechanical properties are sensitive to such microstructural variations [3].

Solution heat treating and aging (STA) is applied in a-p titanium alloys to obtain high strength which. ual porosity. The alloy density and the estimated percentage of total and open po-rosity are presented in Table I. MECHANICAL PROPERTIES OF Ti6A14V ALLOY Fig. LOM Micrographs showing the microsructure of the PM-Ti6Al4V alloy hot-pressed at: (a) oC and 40 MPa for 60 min, (b) oC and 40 MPa for min, (c) oC and 60 MPa for.

The E-book of Comparative World Steel Standards on CD-ROM is a fully searchable Adobe PDF file. Once the E-book is opened, a menu will appear with several options to navigate and search through the E-book. This menu contains links to the Table of Contents, all four Indexes, and to the Search function.

During severe plastic deformation of Al–TM powders, a microstructure with ultrafine grains and second phases is shown to enhance mechanical properties [16,17,18].

Compared to RS, powder metallurgy consolidation techniques are more economical, industrially viable, and faster at producing Al–TM alloys for engineering applications.

alloys consisting of appropriate β phase that allows to minimize or eliminate the β phase fraction by subsequent heat treatments [22,23]. However, little attention is given to analyze the influence of the Mo content on the microstructure and mechanical properties of β-containing TiAl alloys.

Microstructure design and mechanical properties in a near-alpha Ti–4Mo alloy Acta Materialia 97 () Microstructure design and mechanical properties in a near-a Ti–4Mo alloy Z.

Tarzimoghadam, S. Sandlöbes, K.G. Pradeep, D. Raabe Acta Materialia 97 () Ti Mo Micr[ ] PDF-Dokument [ MB]. Influence of the Slag Composition on the Fluorine Absorption in y-TiAl during IESR 59 P. Spiess, and B.

Friedrich Response of Melt Treatment on the Solidified Microstructure of TiAl-2Cr-2Nb Alloy 65 G. Yang, H. Kou, J.

Yang, J. Wang, J. Li, and H. Fu Recent Development and Optimization of Forging Process of High Nb-TiAl Alloy age hardenable nickel based superalloy that contains high amounts of major alloying elements including Fe, Cr and Nb.

Inconel is generally characterized by its competitive mechanical properties such as great creep and fatigue properties, high strength, as well as oxidation and corrosion resistance at high temperatures up to ~°C [1].

microstructure and mechanical properties, it was the purpose of this in vitro study to evaluate this influence on a NiCr alloy used for fixed partial and single prostheses. Material and Methods The Wiron 99 alloy (BEGO–Wilcos-Brasil) is specifically applied for dental use in Fixed Partial Prostheses.

This. Microstructure, mechanical properties, and corrosion behavior of new β­type Ti–Mo–Nb based alloys by Mn addition for implant material Titanium alloys are widely used for biomaterial applications since they have special characteristics, especially better biocompatibility, superior corrosion behavior and lower modulus of elasticity compared.

Effect of Cr/Mo on Microstructure and Mechanical Properties of Ti-Al-Nb Alloy Authors: Zhu Hang Jiang, Ning Li, Cheng Zhi Zhao, He Xin Zhang, Zhi Ming Li Abstract: Effects of alloying elements (i.e., variable content of Mo and C) on the microstructure and compression properties of four types of experimental material based on TiAl-based alloy.

The most important aspect of any engineering material is its structure. The structure of a material is related to its composition, properties, processing history and performance.

And therefore, studying the microstructure of a material provides information linking its composition and processing to its properties and performance.

Zhiping Sun, Xiaozhen Li, Zhiming Wang, Microstructure and mechanical properties of low activation Fe–Ti–Cr–V–W multi-principal element alloys, Journal of Nuclear Materials, /t,(), (). A paper "Effects of carbon on microstructure, mechanical properties and metal ion release of Ni-free Co–Cr–Mo alloys containing nitrogen" has been accepted for publication in Materials Science and Engineering C.

A paper "Control of γ lamella precipitation in Ti at.%. Alloy carbides include M 2 C (Mo-rich), M 7 C 3, M 6 C, M 23 C 6 (Cr-rich), V 4 C 3, TiC etc., where the 'M' refers to a combination of metal atoms.

However, all of these carbides require the long-range diffusion of substitutional atoms. They can only precipitate when the combination of time and temperature is sufficient to allow this diffusion. Microstructure and Mechanical Properties of New Thermo-Mechanically Processed V-Cr (Nb-Mo) Micro-alloyed Steels Doctor of Philosophy Deformation Mechanisms of near B -Ti Alloys Shoushtari Zadeh Naseri, Pouyan.(mole fraction, %) alloy is prepared by high energy double mechanical milling and SPS.

The aim of this study is to determine the effect of SPS temperature on the microstructure and mechanical properties of the TiAl-based alloy with ultrafine grained microstructures.

2 Experimental The powders of Ti(%), Al(%), Cr(99%). Heat treatment route is an important route for the development of high-strength alloy steel. Many heat treatment processes are applied depending on alloy compositions and desired mechanical properties. There are various high-strength alloy steels, namely, austenitic stainless steel (16–26 wt%Cr, – wt%C, 8–10 wt%Ni, rest Fe), where the heat treatment adopted is the low .