Investigation of nanostructure formation mechanism and magnetic properties in Fe45Co45Ni10 system synthesized by mechanical alloying

Baghbaderani, Hasan Ahmadian; Sharafi, S.; Chermahini, Mehdi Delshad

doi:10.1016/j.powtec.2012.07.039

Cited by 51 publications

(16 citation statements)

References 27 publications

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“…Up to 2 h, a dramatic decrease in the crystallite size occurs due to annihilation and recombination of dislocations bringing about formation of nanometerscale sub-grains. Also, fracturing and cold welding were likely to refine grains by forming new grains from the fragments of the original coarse grains at the welding interface [20]. The trend at this stage is justifiable based on a model proposed by Li et al [21]:…”

Section: Morphology Studiesmentioning

confidence: 99%

“…This phenomenon may be due to lowering of inter layer spacing between Al layers rather than dislocation generation in these small grains. Deformation in extremely small grains occurs by grain boundaries rotation rather than grain boundary generation [20].…”

Section: Microstructurementioning

confidence: 99%

“…This is accompanied by a reduction in overall Trans Indian Inst Met dislocation density by annihilation at grain boundaries [18] (dynamic recovery), which leads to a rigorous decline in increasing rate of microstrain. Also, temperature rise effect brings about static recovery and strain relaxation [12,20,25]. However, further rise in microstrain is a result of introduction of more SiC nanoparticles into the matrix and its subsequent effects such as hindering of dislocations' movements.…”

Section: Microstructurementioning

confidence: 99%

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Role of Different Fractions of Nano-size SiC and Milling Time on the Microstructure and Mechanical Properties of Al–SiC Nanocomposites

Pakseresht

Baghbaderani

Yazdani-Rad

2015

Trans Indian Inst Met

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High energy ball milling was implemented to produce Al-matrix composites reinforced with 2.5, 5, 10, 15 and 20 wt% silicon carbide (SiC) nano-particles. In this regard, Scanning electron microscopy, X-ray diffraction and microhardness tests were applied to clarify the role of milling time and the percentage of nanometric SiC on structural evolutions and mechanical properties of the composites. An increase in the SiC proportion resulted in accelerating the milling process, leading to faster work hardening rate and fracture of the aluminum matrix. Thus, the crystallite size of Al in Al-20wt.%SiC composite reached a low of 20 nm after milling for 25 h and the microstrain trend experienced higher increasing rate in composites with higher amounts of SiC. Similarly, as a result of the rise in SiC percentage, there was a growth in the microhardness of composites. This phenomenon was mainly attributed to grain refinement, explained by HallPetch equation. On the other hand, inverse Hall-Petch behavior was observed for a ultra fine-grain sample, Al20wt.%SiC milled for 25 h.

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Section: Morphology Studiesmentioning

confidence: 99%

Section: Microstructurementioning

confidence: 99%

Section: Microstructurementioning

confidence: 99%

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Role of Different Fractions of Nano-size SiC and Milling Time on the Microstructure and Mechanical Properties of Al–SiC Nanocomposites

Pakseresht

Baghbaderani

Yazdani-Rad

2015

Trans Indian Inst Met

Self Cite

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“…It should be mentioned that the MA of Fe-Co-Ni powder mixtures was previously used to synthesize materials with special magnetic properties [23][24][25]. The possibility of significantly enhancing the strength and wear resistance has not yet been described in the literature.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Alloying as an Effective Way to Achieve Superior Properties of Fe–Co–Ni Binder Alloy

Логинов

Сидоренко

Bychkova

et al. 2017

Metals

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This study addresses the fabrication of nanocrystalline Fe-Co-Ni alloy using two operations: mechanical alloying (MA) of elemental powders and hot pressing (HP). The evolution of the phase composition and structure of the powder particles after MA was investigated. Ball milling with rotation speed 700 rpm for 15-20 min allows the production of a bcc Fe-based supersaturated solid solution. During the HP of this powder, this solution decomposes into a bcc (Fe) solid solution and fcc Fe 3 Ni precipitates, which act as a recrystallization barrier at elevated temperatures. This factor, along with the solid solution strengthening of the (α-Fe) matrix and high concentration of lattice defects (dislocations and twins), provides high mechanical properties (ultimate bending strength of 2000 MPa and hardness of 108 HRB) and wear resistance of the alloy. The developed Fe-Co-Ni alloy is promising for use as a binder in diamond tools designed for machining abrasive materials.

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“…All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. Mechanical milling is a well-established process for preparing metals with a wide variety of structures, including supersaturated, 1 metastable crystalline, 2 quasicrystalline, 3 intermetallic, 4 nanostructured, 5 and amorphous alloy powders. 6 In the milling process, metal particles are used as starting materials.…”

mentioning

confidence: 99%

Texture formation in iron particles using mechanical milling with graphite as a milling aid

et al. 2015

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Crystallographically anisotropic platelet iron particles were successfully prepared using a conventional ball mill with addition of graphite (Gp) particles. The morphological and structural changes resulting from the milling were investigated using scanning electron microscopy and X-ray diffraction. The spherical iron particles were plastically deformed into platelet shapes during the milling. Simultaneously, it is suggested that the size of the Gp particles decreased and adhered as nanoparticles on the surface of the iron particles. The adhered Gp particles affected the plastic deformation behavior of the iron particles: the {001} planes of α-iron were oriented parallel to the particle face, and no preferred in-plane orientation was observed. This study not only details the preparation of soft magnetic metal particles that crystallographically oriented to enhance their magnetic properties but also provides new insight into the activities of the well-established and extensively studied mechanical milling method.

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Investigation of nanostructure formation mechanism and magnetic properties in Fe45Co45Ni10 system synthesized by mechanical alloying

Cited by 51 publications

References 27 publications

Role of Different Fractions of Nano-size SiC and Milling Time on the Microstructure and Mechanical Properties of Al–SiC Nanocomposites

Role of Different Fractions of Nano-size SiC and Milling Time on the Microstructure and Mechanical Properties of Al–SiC Nanocomposites

Mechanical Alloying as an Effective Way to Achieve Superior Properties of Fe–Co–Ni Binder Alloy

Texture formation in iron particles using mechanical milling with graphite as a milling aid

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