Microstructure evolution and mechanical properties of nanocrystalline FeAl obtained by mechanical alloying and cold consolidation

Mhadhbi, Mohsen; Khitouni, Mohamed; Escoda, L.; Suñol, J.J.; Dammak, M.

doi:10.1016/j.jallcom.2010.10.214

Cited by 28 publications

(9 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The peak at higher temperatures can be related to the formation of the order phases Al 13 Fe 4 . This phase was also detected in a previous work of Fe-40at%Al [19]. Thus, the reduction in the Al content (from 40 to 25 at% does not inhibit the formation of this phase.…”

Section: Thermal Analysissupporting

confidence: 82%

Study of the Microstructural, Thermal, and Magnetic Properties of High-Energy Ball-Milled Nanocrystalline Fe(Al)

et al. 2022

View full text Add to dashboard Cite

In this work, structural, microstructural, thermal, and magnetic properties of a Fe-25at%Al alloy produced by high-energy mechanical milling were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and vibrating sample magnetometry (VSM) techniques. At the early stage of the milling process, three phases, namely, Fe, Al, and Fe(Al), coexist in the milled powder. After 20 h of milling, the results of the refinement of the XRD pattern reveal the formation of the supersaturated bcc-Fe(Al) solid solution with a crystallite size of 10 nm. The DSC curves show several overlapped exothermic peaks associated with the relaxation of the deformed structure and various phase transitions, such as the formation of Al13Fe4 and Fe3Al intermetallic. During milling times, the alloyed samples have a hard-ferromagnetic behavior, where Hc varies from 628 Oe to 746 Oe when the milling time increases from 4 to 40 h. The magnetic properties were related to the microstructural changes.

show abstract

Section: Thermal Analysissupporting

confidence: 82%

Study of the Microstructural, Thermal, and Magnetic Properties of High-Energy Ball-Milled Nanocrystalline Fe(Al)

et al. 2022

View full text Add to dashboard Cite

show abstract

“…[27,28] Strengthening by second phase particles represents a potential method in this direction. [29,30] In recent work, Mhadhbi et al [31] reported that highly disordered Fe-Al (with 40 pct Al) alloy obtained by MA and cold consolidation is crystallized to a mixture of fine metastable Al 2 Fe 2 , Al 13 Fe 4 , and Fe 3 Al intermetallic phases. Moreover, it has been revealed that during annealing the milled Fe28Al powder, the order transformation from Fe(Al) to DO3-Fe3Al occurred.…”

Section: Nanocrystalline (Nc) Fe-al Intermetallicmentioning

confidence: 99%

Structural and Thermal Study of Nanocrystalline Fe-Al-B Alloy Prepared by Mechanical Alloying

Gharsallah

Sekri

Azabou

et al. 2015

Metall Mater Trans A

View full text Add to dashboard Cite

Nanostructured iron-aluminum alloy of Fe-25 at. pct Al composition doped with 0.2 at. pct B was prepared by mechanical alloying. The phase transformations and structural changes occurring in the studied material during mechanical alloying and during subsequent heating were investigated by SEM, XRD, and DSC techniques. The patterns so obtained were analyzed using the Rietveld program. The alloyed powders were disordered Fe(Al) solid solutions and Fe 2 B boride phase. The Fe 2 B boride phase is formed after 4 hours of milling. The crystallite size reduction to the nanometer scale (5 to 8 nm) is accompanied by an increase in lattice strains. The powder milled for 40 hours was annealed at temperatures of 523 K, 823 K, 883 K, and 973 K (250°C, 550°C, 610°C, and 700°C) for 2 hours. Low temperatures annealing are responsible for the relaxation of the disordered structure, while high temperatures annealing enabled supersaturated Fe(Al) solid solutions to precipitate out fines Fe 3 Al, Fe 2 Al 5 , and Fe 4 Al 13 intermetallics and, also the recrystallization and the grain growth phenomena.

show abstract

“…The different between the compressive residual stresses in the coating prepared at different milling time is believed to affect the hardness of the coating [10,12]. Other studies show that the smallest grain size leads to some softening for finest nanocrystallites which causes the hardness falls [7]. The small grain size becomes impossible to accommodate the several dislocations which are required to form pile-up at the grain boundary [19].…”

Section: Methodsmentioning

confidence: 99%

“…Mechanical alloying is one of the top-down techniques used for reducing the grain size of the materials. This method can be used to produce ultra fine and uniform powders, which is now widely applied for preparation of intermetallics, extended solid solutions and amorphous phases of powders [3,7].…”

Section: Introductionmentioning

confidence: 99%

Correlations between Structural and Hardness of Fe-50%Al Coating Prepared by Mechanical Alloying

Aryanto

Sudiro

2019

PISTON J.Tech.Eng

View full text Add to dashboard Cite

Fe-50%Al coatings were deposited on the surface of low-carbon steel using mechanical alloying technique atdifferent milling times. The correlation between structure and hardness of coating before and after heat treatment wasinvestigated. At the milling time of less than 180 min, the coating has an elongated lamellar structure. The size of elongatedlamellar structure decreased with increasing milling times which led to an increase in the hardness value of coating. Afterheat treatment, the coating transformed to FeAl intermetallic phase with a denser structure and uniform in the composition. Itaffected the hardness of coating. The hardness value of all samples after heat treatment was higher than coating after milling.The hardness of coating was strongly influenced by the morphology and phase of coating.

show abstract

Microstructure evolution and mechanical properties of nanocrystalline FeAl obtained by mechanical alloying and cold consolidation

Cited by 28 publications

References 37 publications

Study of the Microstructural, Thermal, and Magnetic Properties of High-Energy Ball-Milled Nanocrystalline Fe(Al)

Study of the Microstructural, Thermal, and Magnetic Properties of High-Energy Ball-Milled Nanocrystalline Fe(Al)

Structural and Thermal Study of Nanocrystalline Fe-Al-B Alloy Prepared by Mechanical Alloying

Correlations between Structural and Hardness of Fe-50%Al Coating Prepared by Mechanical Alloying

Contact Info

Product

Resources

About