Criterion for predicting the glass-forming ability of alloys

Sharma, Santosh Kumar; Vaidyanathan, R.; Suryanarayana, C.

doi:10.1063/1.2713867

Cited by 49 publications

(24 citation statements)

References 22 publications

(15 reference statements)

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“…6b. It is worth mentioning that, in a very recent work, Sharma and Suryanarayana reported a change in the homogenization trend of some Fe based alloys for long milling times [26] (after being mechanically amorphized, mechanical crystallization is observed), which could also be responsible for the changes observed at long milling times in this work. Fig.…”

Section: Powder Particle Size and Compositionmentioning

confidence: 81%

An equivalent time approach for scaling the mechanical alloying processes

et al. 2008

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Section: Powder Particle Size and Compositionmentioning

confidence: 81%

An equivalent time approach for scaling the mechanical alloying processes

et al. 2008

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“…Table 4 presents the results obtained, including the equilibrium number of intermetallic phases present between X and the constituent elements (Zr, Fe or B) in the powder bend. 168,169 A close examination of Table 4 clearly reveals that the ease of amorphisation (i.e. GFA) increased with the number of intermetallics present in the constituent Zr-X binary phase diagrams.…”

Section: Inoue Criteriamentioning

confidence: 99%

“…A systematic and comprehensive investigation has recently been reported on the glass formation behaviour and stability of several Febased glassy alloys processed by MA. 168 Based on a systematic and comprehensive investigation on Fe-based alloys of the generic composition of Fe 42 X 28 Zr 10 B 20 (where the subscripts represent the composition of the alloy in atomic percentage and X5Al, Co, Ge, Mn, Ni or Sn), it was noted that amorphisation had occurred only in some alloy systems and not in all. For example, amorphisation occurred only in alloy systems with X5Al, Ge or Ni, as evidenced by the presence of a broad diffuse peak centred at the (110) Fe position in the X-ray diffraction (XRD) patterns (Fig.…”

Section: Inoue Criteriamentioning

confidence: 99%

Iron-based bulk metallic glasses

Suryanarayana

Inoue

2013

International Materials Reviews

505

161

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The current status of research and development in Fe-based bulk metallic glasses (BMGs) is reviewed. Bulk metallic glasses are relatively new materials possessing a glassy structure and large section thickness. These materials have an exciting combination of properties such as high mechanical strength, good thermal stability, large supercooled liquid region and potential for easy forming. Ever since the first synthesis of an Fe-based BMG in an Fe-Al-Ga-P-C-B system in 1995, there has been intense activity on the synthesis and characterisation of Fe-based BMGs. These BMGs exhibit some unique characteristics which have not been obtained in conventional Fe-based crystalline alloys. This uniqueness has led to practical uses of these bulk glassy alloys as soft magnetic and structural materials. This review presents the recent results on the glassforming ability, structure, thermal stability, mechanical properties, corrosion behaviour, soft magnetic properties and applications of Fe-based bulk glassy alloys developed during the last 15 years. This review also highlights the advanced analysis of their properties which has contributed significantly to the progress in understanding and developing of the Fe-based BMGs. The future prospects of Fe-based BMGs have also been presented.

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“…5(b)), no evident morphology is seen. This is not surprising, since Ge is a known glass-former 17,35 . For the NbC film with highest Nb content in series S3 (Fig.…”

Section: Resultsmentioning

confidence: 99%

Structure and electrical properties of Nb-Ge-C nanocomposite coatings

Tengstrand

Nedfors

Fast³

et al. 2014

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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Nb-Ge-C nanocomposite thin films were deposited by dc magnetron sputtering using three elemental targets. The films consist of substoichiometric NbCx in a nanometer-thick matrix of amorphous C and Ge. Films with no Ge contain grains that are elongated in the growth direction with a (111) preferred crystallographic orientation. With the addition of ∼12 at. % Ge, the grains are more equiaxed and exhibit a more random orientation. At even higher Ge contents, the structure also becomes denser. The porous structure of the low Ge content films result in O uptake from the ambient. With higher C content in the films both the amount of amorphous C and C/Nb-ratio increases. The contact resistance was measured by four-point technique as a function of contact force between 0 and 10 N. The lowest contact resistance (1.7 mΩ) is obtained at 10 N. The resistivity varies between 470 and 1700 μΩ·cm depending on porosity and O content.

At the time for thesis presentation publication was in status: Manuscript

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Criterion for predicting the glass-forming ability of alloys

Cited by 49 publications

References 22 publications

An equivalent time approach for scaling the mechanical alloying processes

An equivalent time approach for scaling the mechanical alloying processes

Iron-based bulk metallic glasses

Structure and electrical properties of Nb-Ge-C nanocomposite coatings

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