Synthesis and Characterization of Nanocrystalline Iron Aluminide Intermetallic Compounds

Hu, Wangyu; Kato, Takayuki; Fukumoto, Masahiro

doi:10.2320/matertrans.44.2678

Cited by 22 publications

(11 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of approximately 3 to 5 pct Fe 3 Al in the coating has previously been revealed by a careful analysis of X-ray diffraction (XRD) data. [7] Comparatively, in recent XRD analyses of HVOF-sprayed FeAl coatings, Hu et al [30] and Totemeir et al [18] did not find the presence of the Fe 3 Al phase. The TEM analysis carried out in the present work confirmed the presence of large equiaxed Fe 3 Al grains in the fully melted zones (Figure 3(c)).…”

Section: A the Al Loss And Formation Of The Fe 3 Al Phase And Fine Amentioning

confidence: 96%

Microstructure of a High-Velocity Oxy-Fuel Thermal-Sprayed Nanostructured Coating Obtained from Milled Powder

Grosdidier

Morniroli

2007

Metall Mater Trans A

View full text Add to dashboard Cite

The mechanisms responsible for the different types of microstructure present in a nanostructured coating prepared by high-velocity oxy-fuel (HVOF) spraying of the Y 2 O 3 -reinforced milled FeAl powder have been established. Nano-and microsized grains were present both in the melted splats and the retained unmelted powder particles. In the unmelted powder particles, equiaxed grains formed by recrystallization from the heavily deformed and disordered structure present in the initial powder. Their size was controlled by the degree of advancement of the recrystallization process and the larger grains contained ribbonlike antiphase boundaries (APBs) separating large, ordered domains. In the melted zones, the grain size (and shape) was controlled by the local efficiency of the heat extraction during solidification. The Al evaporation during thermal spraying led to a modification of the local chemistry that resulted in the formation of the Fe 3 Al and FeAl phases containing fine networks of APBs. These APBs formed by sequential ordering from the high-temperature disordered FeAl phase that formed from the melt. Despite the high-temperature processing and recrystallization processes, both the melted and unmelted zones contained dislocations that result from residual stresses as well as from peening by the powder particles during spraying.

show abstract

Section: A the Al Loss And Formation Of The Fe 3 Al Phase And Fine Amentioning

confidence: 96%

Microstructure of a High-Velocity Oxy-Fuel Thermal-Sprayed Nanostructured Coating Obtained from Milled Powder

Grosdidier

Morniroli

2007

Metall Mater Trans A

View full text Add to dashboard Cite

show abstract

“…HVOF of nanocrystalline iron aluminide It has been suggested by Hu et al [5] that refining the grain size of the starting powders to the nanocrystalline level led to improve the strength of the coating while enhancing ductility and toughness. In their study, nanocrystalline iron aluminide intermetallic compounds powder synthesized by mechanical alloying were used as feedstock materials for HVOF.…”

Section: Utilization Of Ball-milled Powders As Feedstock Materials Fomentioning

confidence: 99%

Utilization of mechanically alloyed powders for surface protective coating

El‐Eskandarany

2015

Mechanical Alloying

View full text Add to dashboard Cite

“…There is a large scope for research in producing massive parts of ultra-fine grained FeAl alloys. [6] Intermetallic alloys based on FeAl are of interest as possible replacements for various stainless steels and heatresistant Fe-Cr-Ni alloys because they have outstanding oxidation/corrosion resistance at high temperatures. [8] The powder-processed FeAl alloy Fe38Al.…”

Section: Iron Aluminidementioning

confidence: 99%

Analytical Assessment of Iron Aluminide Alloys as Bearing Material for Rotor Dynamics

Kumar¹,

Nagaraju²,

Rao³

et al. 2015

IJERT

View full text Add to dashboard Cite

The deep groove ball bearing 3D model is developed and finite element analysis is carried out for the analysis about the effect of material properties to the different parameters such as natural frequency, stress and deformation. The stress parameters at the contact surfaces of ball bearing are considered and the evaluation of its strength is done. Relying on the analytical analysis natural frequency, equivalent stress, bearing deformation, contact frictional stress and contact pressure of different types of materials which are generally used in manufacturing of bearings are compared with the iron aluminide alloy. The conventional bearing materials like stainless steel, beryllium copper and chromium steel are considered for the analysis and their performance is compared. An angular velocity of 1000 RPM is applied to the inner race by keeping the outer race fixed. The natural frequencies at which all models of deep groove ball bearing deform are analyzed. The stress parameters at the same environmental conditions of all materials are compared and analyzed for a non-defective and defective deep groove ball bearing. The simulation results assess that the computational values were consistent. They all showed that model and above boundary conditions were correct and it will provide a scientific basis for design of bearing under complicated loads. For the present analysis the standard designed bearing 6210 is modeled and analyzed using ANSYS15 software. The result from the analysis suggests that iron aluminide alloy is a competitive and better bearing material over conventional bearing materials.

show abstract

Synthesis and Characterization of Nanocrystalline Iron Aluminide Intermetallic Compounds

Cited by 22 publications

References 16 publications

Microstructure of a High-Velocity Oxy-Fuel Thermal-Sprayed Nanostructured Coating Obtained from Milled Powder

Microstructure of a High-Velocity Oxy-Fuel Thermal-Sprayed Nanostructured Coating Obtained from Milled Powder

Utilization of mechanically alloyed powders for surface protective coating

Analytical Assessment of Iron Aluminide Alloys as Bearing Material for Rotor Dynamics

Contact Info

Product

Resources

About