pure of iron aluminides

Indentation creep studies of iron aluminide intermetallic alloy

diffusion of pure iron and in excellent agreement with previous studies. These values of n, activation area and activation energy were found to be consistent with disloion cli as the rate controlling creep mechanism. Conventional creep curves were also values.

Theoretical calculation of elastic properties and electronic …

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Making iron aluminides out of scrap | Journal of …

Similarly, Matsuura et al. investigated iron aluminides produced using recycled raw materials, comparing with conventionally produced alloys, obtaining slightly better results for the former. The authors attribute this observation to solid solution strengthening, but an explanation in the line of the one described above could well be in place.

Synthesis of Transition Metal Aluminides from Elemental …

In the Fe-Al system, with coarse iron particles, an exothermic was observed before the melting of aluminum, followed by a stronger at much higher temperatures. In all cases, irrespective of the initial composition of the powder mixture, aluminides rich

Effect of hydrogen on hodic corrosion of titanium …

@article{osti_187035, title = {Effect of hydrogen on hodic corrosion of titanium aluminide}, author = {Gao, K W and Jin, J W and Qiao, L J and Chu, W Y and Hsiao, C M}, abstractNote = {hodic corrosion of titanium aluminide (TiAl) during hydrogen charging in various acidic aqueous solutions and in molten salt at 160 C was studied.

Relation between composition, microstructure and …

Martinez, Mayerling and Viguier, Bernard and Maugis, Philippe and Lacaze, Jacques Relation between composition, microstructure and oxidation in iron aluminides. (2006) …

Processing of continuous-ceramic-fiber-reinforced …

In the case of nickel and iron aluminides it was found necessary to add a small amount (0.5-1 at.%) of a strong oxide former such as titanium, yttrium or zirconium to improve wetting and therefore to achieve complete infiltration. This paper will focus on the fiber

Pitting corrosion of iron in weakly alkaline chloride …

@article{osti_218584, title = {Pitting corrosion of iron in weakly alkaline chloride solutions}, author = {Makar, G L and Tromans, D}, abstractNote = {Chloride-induced pitting corrosion of iron at pH 10.5 and 25 C was examined by conducting quasi-steady-state (potentiostatic) polarization experiments in borate-buffered 0.1 M sodium chloride solutions with buffer concentrations from 0 M to 0

ELECTRODEPOSITION OF TITANIUM ALUMINIDES FROM …

ELECTRODEPOSITION OF TITANIUM ALUMINIDES FROM ALUMINUM CHLORIDE: 1-BUTYL-3-METHYL IMIDAZOLIUM CHLORIDE IONIC LIQUID by MALLIKHARJUNA REDDY BOGALA RAMANA G. REDDY, COMMITTEE CHAIR NITIN CHOPRA MUHAMMAD

Preparation and Characterization of Sol-Gel Derived Pure …

Synthesis of Nanocrystalline Iron Aluminides by Mechanical Alloying p.19 Mechanosynthesis of Metal-Silica Nanocomposites Preparation and Characterization of Sol-Gel Derived Pure and Doped CdTiO 3 Article Preview Abstract: Add to Cart Info: Periodical:

2. Iron rich iron-aluminides — Nanoscale AFM and TEM …

2. Iron rich iron-aluminides Over the 80 years of research on iron-aluminides immense amount of literature was produced. This chapter summarizes some of the relevant prior work. First, the Fe–Al phase diagram and ideal equilibrium structures of Fe–Al compounds

DOAB: Directory of Open Access Books

Abstract By the late 1940s, and since then, the continuous development of disloion theories have provided the basis for correlating the macroscopic time-dependent deformation of metals and alloys—known as creep—to the time-dependent processes taking

Influence of high-strain rate and temperature on the …

Although the influence of strain rate on the structure/property relationships of pure nickel, iron, and titanium and a variety of their alloys have been extensively studied, the effect of strain rate on the stress-strain response of Ni-, Fe-, and Ti-based aluminides

Archive ouverte HAL - Relation between composition, …

The relation between chemical composition, microstructure and oxidation properties has been investigated on various FeAl based alloys, the aim being to induce changes in the microstructure of the compound by selective oxidation of aluminium. Oxidation kinetics that was evaluated on bulk specimens showed that, due to fast diffusion in the alloys, no composition gradient is formed during the

DOAB: Directory of Open Access Books

Abstract The high-temperature deformation behavior of oxide dispersion strengthened steels was investigated and correlated to the resulting microstructure using electron microscopy. Viscoplastic constitutive equations were developed from the results to model the

NOTICE

aluminides, orthorhoic-based titanium aluminides, and a or fl titanium aluminides and pure titanium. Thus the titanium aluminum iron alloy of the present invention can be used as: a) a diffusion barrier for MCrA1X-type coatings on titanium aluminides; b) an

Alumni - Indian Institute of Technology Kanpur

Corrosion Behaviour of Iron Aluminides -N/A-1994 Arvind Agarwal Hydrogen Erittlement of Iron Aluminides Associate Professor, Florida International University 1992 K. Gopinath Environmental Degradation of Cast Al-Al 2 O 3 Particulate Composites -N/A

THE EFFECT OF BORON ON THE GRAIN SIZE OF THE ALUMINIDES …

Powder Metallurgy Progress, Vol.9 (2009), No 3 174 EXPERIMENTAL Intermetallic matrix composites based on iron and nickel alumunide binders, WC-40 vol.% (FeAl-B) and WC-40 vol.% (Ni3Al-B), with an average grain size of carbide 0.69 µm have been

J.R. Groza

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Formation of Gradient Micro-Porous Titanium-Aluminides …

Al, iron and magnesium being more abundant [8]. Ti is seldom found in high concentration and cannot be found in a pure ore state. Processing Ti is expensive and is only produced in batches and not in a continuous process as with other metals therefore

Mechanistic and processing studies in coustion synthesis of niobium aluminides

Mechanistic and processing studies in coustion synthesis of niobium aluminides C.R. Kachelmyer, A. S. Rogachev,a) and A. Varmab) Department of Chemical Engineering, University of Notre Dame, Notre Dame, Indiana 46556-5637 (Received 17 January 1995

Manufacturing Technology: Coefficient Thermal …

The iron aluminides appear to be suitable materials for use in high temperature appliions. Knowledge of thermal expansion of the machine parts is prerequisite for their use in industrial appliions. The study of expansion properties of ir Archive Vol.19 (2019): 1issue 1 2issue 2 …

IRON AND STEELS | Microstructure and Properties of …

Pure Iron Electronic structure Crystal structure Phases and Phase Diagrams Introduction Interstitial solid solution and Fe-C phase diagram Substitutional solid solutions and alloy steels

Metallurgy of Titanium and its Alloys - Harry Bhadeshia

Metallurgy of Titanium and its Alloys H. K. D. H. Bhadeshia Pure Titanium Pure titanium melts at 1670 o C and has a density of 4.51 g cm-3.It should therefore be ideal for use in components which operate at elevated temperatures, especially where large strength to

Microstructure and Oxidation Behavior of Low Pressure …

Microstructure and Oxidation Behavior of Low Pressure Plasma Sprayed Iron Aluminides Microstructure and Critical Current Density of YBa_2Cu_3O_-Ag Composites Compressed at High Temperature Effect of Oxygen on Yield Stress and Slip Plane in Nb, Nb-Ta and Nb-Mo Single Crystals

Lower temperature aluminizing and its effect on …

Frangini, S, DeCristofara, NB, Mignone, A, Lascovich, J, Giorgi, R, “A Coined Electrochemical and XPS Study on the Passivity of B2 Iron Aluminides in Sulphuric Acid Solution.” Corros. Sci., 39 (8) 1431–1442 (1997) CAS Article Google Scholar