TiAl alloy
Evaluation of Yttria Applicability as a Crucible for Induction Melting of TiAl Alloy
... An yttria-based crucible manufactured based on the above- mentioned investigation and other reference crucibles (namely calcia, zirconia, and alumina) were used for induction melting testing of TiAl alloy. ...
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Superplasticity and Superplastic Diffusion Bonding of a Fine Grained TiAl Alloy
... 1 h, the visible bond interface can also be found, but no void is observed. Moreover, some fine grains with grain size of about 2 mm in the bond interface are observed [Fig. 5(f)], whereas the grains in the matrix ...
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Synthesis of Nanostructure Ti-45Al-5Cr Alloy by Mechanical Alloying and Study the Effect of Cr Addition on Microstructure of TiAl Alloy
... the alloy and achieve the duplex phase (γ+α2) in the microstructure of the alloy are the best condition to overcome the obstacles of the single phase γ-TiAl ...
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Diffusion Bonding of TiAl Alloy to Eutectoid Steel and its Interfacial Self destruction Behavior
... Interfacial microstructures and bonding strength of TiAl alloy/eutectoid steel joints have been investigated from the viewpoint of diffusion barrier effect of carbide layer formed at the interface. Diffusion ...
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Effects of Si on Microstructures and High Temperature Properties of Beta Stabilized TiAl Alloy
... phases. Thus, it may improve the deformability of TiAl alloys at an elevated temperature. Several researchers 4 7) have demonstrated that improvements in hot workability can be achieved by stabilizing the ¢ ...
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Conditions for CET in a gamma TiAl alloy
... Abstract. The solidification of gamma TiAl alloys is of interest to the aerospace and automotive industries. A gamma TiAl multicomponent alloy: Ti–45.5Al–4.7Nb–0.2C–0.2B (at. %) has been the focus of ...
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A Dislocation-scale Characterization of the Evolution of Deformation Microstructures around Nanoindentation Imprints in a TiAl Alloy
... In dual-phase TiAl alloys, plastic deformation mainly occurs on the 1 1 1 planes of the γ.. 38.[r] ...
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A Novel Directional Solidification of TiAl Based Alloys by Electromagnetic Cold Crucible Zone Melting Technology with Y2O3 Moulds
... DS TiAl-based alloys were successfully prepared via electromagnetic cold crucible (EMCC) directional solidi fi ...DS TiAl alloy became relative stable, and then continuous columnar crystals were ...
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A Comparison between the Effect of Cr and W Addition on Formation Kinetic of Nanostructure TiAl(γ) Alloy by Mechanical Alloying Route
... of TiAl alloy were ...the TiAl(γ) with amount of Ti 3 Al( a 2 ) were formed and for sample with W addition, the duplex phase (γ+ a 2 ) with a minor amount of W, were ...
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Microstructure, Metal Mold Reaction and Fluidity of Investment Cast TiAl Alloys
... of TiAl alloys in the present ...of TiAl alloys castings regardless mold ...of TiAl alloy castings is gradually reduced with mold preheating temperature due to heterogeneous nucleation near ...
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Creep Behavior of Ti 40Al 16Nb Intermetallic Alloy and Strengthening Effects of Minor Sc
... Sc-containing alloy is substantially ...Ti–40Al–16Nb alloy at elevated temperature. -containing TiAl alloys are found to have high-temperature formability, and their primary creep strain and fracture ...
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Effect of Al-Ti-C-La Composite Alloy on Microstructure and Mechanical Properties of 6063 Aluminum Alloy
... of alloy. For another, after the addition of Al-Ti-C-La composite alloy, the original coarse β-AlFeSi phase in the alloy changes into small particle and short rod, which reduces the cleavage effect ...
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Creep and Corrosion Properties of the Extruded Magnesium Alloy Containing Rare Earth
... alloy. In the corrosion process, the trend of the rate determined from the weight-loss measurements was con- sistent with that determined by the electrochemical testing method (shown in Fig. 4 and Table 2). The ...
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Wetting and spreading of droplets on rough aluminum surfaces
... Six AlMg6 aluminum alloy samples were used in the experiment. The samples are disks (50 mm in diameter and 4 mm thick). The substrates were polished using diamond pastes and abrasive felt wheels. Five samples were ...
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Impact and Hot Corrosion Properties of Levitation Melted NiAl Polycrystals with Different Purity
... 3.3 Charpy impact value and dynamic maximum load To calculate the impact fracture energy from load- deflection curves was difficult because of low sensitivity of a potentiometer for detection of deflection. Therefore, Charpy ...
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Mechanical and Magnetic Properties of Ni Mn Ga Gd Ferromagnetic Shape Memory Alloys
... microstructure of the alloys containing Gd consists of the matrix and the white second phase. With increasing Gd content, the second phase firstly disperses homogeneously in the matrix with small amounts and then tends to ...
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The Characterization of Reinforced TiAl Intermetallic with Dispersed Cr Particles Consolidated by HIP
... ture of Cr powder in TiAl powder are listed in Table 1. The contents of Cr powder are changed from 0 to 25 mass% by 5% step so that 6 compositions are prepared. TiAl pow- der (grain size < 38 µm) is ...
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Oxidation Resistance of TiAl Improved by Ion Implantation of Beta Former Elements
... where diffraction patterns were taken and EDS was per- formed. The EDS results are shown in Table 3, where the concentration is normalised for Al, Ti and Fe. The Fe- modified zone is about 60 nm thick, slightly thinner ...
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Adherence ability of <em>Staphylococcus epidermidis</em> on prosthetic biomaterials: an in vitro study
... all the specimens were observed to be generally feature- less, with a smooth surface topography. The numerous micropore- or coral-like structures of the Oxinium, seen at the standard detector SEM, indicated the ...
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Mechanical Properties of V-4Cr-4Ti after Exposure in Static Lithium at 650 °C
... 4Cr-4Ti alloy and liquid Li, and long-term aging may change the microstructures of the alloy, thus possibly in- fluence its mechanical ...the alloy and liquid ...the alloy by solid solution ...
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