Nanocrystalline (Fe60Al40)80Cu20 alloy prepared by mechanical alloying

Krifa, Mohamed; Mhadhbi, Mohsen; Escoda, L.; Güell, J.M.; Suñol, J.J.; Llorca-Isern, Núria; Artieda-Guzmán, C.; Khitouni, Mohamed

doi:10.1016/j.jallcom.2012.11.131

Cited by 25 publications

(17 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The ball to powder weight ratio used was maintained as 12:1 and the milling speed was adjusted to 700 rpm. [34] To prevent sticking of the powder to container walls and the balls, and powder agglomeration during milling, the milling sequence was selected such as 10 minutes of milling followed by 5 minutes of idle period. The milled powder was annealed in a sealed quartz tubes evacuated to 10 À3 under argon atmosphere for 2 hours at different temperatures.…”

Section: Methodsmentioning

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

Section: Methodsmentioning

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

show abstract

“…As can be seen from the SEM image given in Figure 5, at the beginning of the milling process (0-30 h) as a result of the reactions between elemental powders by deformation, the alloyed powders are continuously welded, broken and have been agglomerated to the larger powders. It was seen that these sequential welding of the little particles on to the surface of larger ones increased the particles size during milling [9]. However, with increasing milling time (40-70 h), particles that reach a certain size have started to break down due to the energy generated by the impact of the milling balls.…”

Section: Resultsmentioning

confidence: 99%

“…Fe-based amorphous/ nanocrystalline alloys have a wide application area due to their good soft magnetic properties, corrosion resistance and also relatively low casting properties [9][10][11][12][13]. The usage of iron-based alloys can be seen in applications such as sensor probes, solenoid end caps and switches, transformer magnets, magnetic cores, information storage, and in high-frequency electronic devices [9,[14][15][16]. In the literature, it is seen that various amorphous/nanocrystalline Fe alloys have been produced successfully by the mechanochemical method.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the structural and magnetic properties of amorphous/nanocrystalline Fe70Ti10B20 (%at.) alloys by mechanical alloying

Şimşek

2019

Journal of Boron

View full text Add to dashboard Cite

In this study, amorphous/nanocrystalline Fe 70 Ti 10 B 20 (at.%) alloys were synthesized by using elemental Fe, Ti and B powders under argon gas atmosphere via mechanical alloying method. The powders were ball milled at 20:1 ball to powder ratio and 500 rpm rotating speed up to 70 h. The phase and morphological properties of the synthesized powders were examined by using X-Ray diffractometer and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM/EDX). The magnetic properties of powders were determined by vibrating sample magnetometer (VSM) at room temperature in the range of 0-20 kOe. It is determined that after 2.5 h of milling Ti and B are started to dissolve in Fe lattice and Fe(TiB) solid solutions formed. XRD analysis revealed that the amorphous structures were formed after 30 h of milling and the crystallite size and lattice strain were found around 8.2 nm and %1.16, respectively. SEM images indicated that the particles were mostly agglomerated and the particles size distribution was in the range of 10-48 μm. Magnetic measurements revealed that after 70 h of milling, the saturation magnetization (M s) and the coercivity (H c) reached about 94 emu/g and 117 Oe.

show abstract

“…Öğütme işlemine tabi tutulan metal tozların manyetik davranışının, kristalit boyutun azalmasıyla birlikte mikroyapısal değişime bağlı olduğu bulunmuştur. Aynı yazarların yaptığı bir diğer çalışmada ise [13], MA işlemi uygulanan (Fe60Al40)80Cu20 (wt.%) tozların ilk saatlerinde Fe(Al,Cu) katı çözeltisi içerisinde homojen olmayan Cu dağılımı meydana gelmiş, X-ışını difraksiyonu (XRD) analizinde Cu, Fe(Al) ve Fe (Al,Cu) olmak üzere üç farklı faz belirlenmiştir. Öğütme süresinin artmasıyla beraber bütün Cu atomları, Fe(Al) örgüsünde çözünerek 10 nm ortalama kristalit boyutuna sahip nanokristal Fe(Al,Cu) katı çözeltisini oluşturmuştur.…”

Section: Gi̇ri̇ş (Introduction)unclassified

“…Örgü parametresindeki bu artış Al ve Cu atomlarının Fe matrisi içerisinde hızlıca çözünmesinden kaynaklanmaktadır. Örgü parametresindeki artışının diğer bir nedeni de örgü hatalarındaki (dislokasyonların) yoğunluğun artması ve gerilme alanları üzerindeki nano tane sınırlarının neden olduğu örgü genişlemesidir[10,13,18]. , devam eden öğütme süresiyle birlikte toz parçacıkları bir kırılma sürecine girmiştir.…”

unclassified

Mekanik Alaşımlama ile Üretilen Nanokristal Fe60Al30Cu10 (at.%) Tozların Yapısal ve Mekanik Özellikleri

Avar

Şimşek

Göğebakan

2019

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

View full text Add to dashboard Cite

Bu çalışmada, nanoyapılı Fe(Al,Cu) katı çözeltisi, elementel tozların mekanik alaşımlama (MA) işlemi ile sentezlenmiştir. Toz karışımlar, 50 saatlik öğütme süresince çeşitli zaman aralıklarında gezegensel bilyeli değirmende öğütülmüştür. Numunelerin yapısal ve mekanik özellikleri X-ışını difraksiyonu (XRD), taramalı elektron mikroskobu/ enerji dağılımlı X-ışını spektroskopisi (SEM/ EDX) ve Vickers mikrosertlik (HV) testi ile incelenmiştir. 10 saatlik öğütme işleminden sonra bütün Al ve Cu atomları ymk-Fe(Al,Cu) katı çözeltisini oluşturmak üzere Fe kafesi içerinde çözünmüştür. Toz alaşımların parçacık morfolojisi öğütme süreleri boyunca soğuk kaynaklanma, kırılma ve kararlı durum aşamalarını göstermiştir. 50 saatlik öğütme işleminden sonra parçacık boyutu ve kristalit boyutu, sırasıyla ~ 500 nm ve ~ 6 nm'ye düşmüştür. Bununla birlikte, mikrosertlik değerleri artan öğütme süresiyle birlikte artmıştır.

show abstract

Nanocrystalline (Fe60Al40)80Cu20 alloy prepared by mechanical alloying

Cited by 25 publications

References 34 publications

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

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

Investigation of the structural and magnetic properties of amorphous/nanocrystalline Fe70Ti10B20 (%at.) alloys by mechanical alloying

Mekanik Alaşımlama ile Üretilen Nanokristal Fe60Al30Cu10 (at.%) Tozların Yapısal ve Mekanik Özellikleri

Contact Info

Product

Resources

About