Phase separation in metallic glasses

Kim, D.H.; Kim, W.T.; Park, Eun Soo; Mattern, N.; Eckert, J.

doi:10.1016/j.pmatsci.2013.04.002

Cited by 233 publications

(101 citation statements)

References 319 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…There are attempts to enhance the plastic deformation in these materials by forming heterogeneous microstructures of amorphous-amorphous [1][2][3][4][5][6][7][8] and amorphous-crystalline [9][10][11][12][13][14][15] composites. The majority of amorphous alloys are multi-component, and glass-forming generally requires high concentrations of alloying additions.…”

Section: Introductionmentioning

confidence: 99%

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AMORPHOUS/CRYSTALLINE DUCTILE LIQUID IMMISCIBLE Fe-Si-B-In ALLOY PRODUCED BY TWO-COMPONENT MELT-SPINNING

Ziewiec

Wojciechowska

Mucha

et al. 2017

mafe

View full text Add to dashboard Cite

Microstructure and mechanical properties of amorphous/crystalline ductile liquid immiscible Fe-Si-B-In alloy produced by two-component melt-spinning Mikrostruktura i właściwości mechaniczne ciągliwego stopu amorficzno-krystalicznego na osnowie Fe-Si-B-In wytworzonego przez odlewanie na wirujący walec z tygla dzielonego AbstractThe two-component melt-spun (TCMS) Fe 71.25 Si 9.5 B 14.25 In 5 alloy was produced from Fe 75 Si 10 B 15 and Fe 67.5 Si 9 B 13.5 In 10 alloys. The microstructure of the TCMS alloy was investigated by means of scanning electron microscopy (SEM) and X-ray diffraction (XRD). A tensile test of the alloy resulted in a tensile strength of R m = 1040 MPa, yield strength R e = 919 MPa, total plastic elongation e tot = 3.29%, and traces of plastic deformation on the surface of the Fe-Si-B-In TCMS sample. Microstructural analysis of the amorphous/crystalline composite and tensile sample free surface show the reason for the ductility of the sample in relation to the Fe 75 Si 10 B 15 alloy. Keywords: metallic glasses, X-ray diffraction (XRD), scanning electron microscopy (SEM), tensile test, ductility

show abstract

Section: Introductionmentioning

confidence: 99%

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AMORPHOUS/CRYSTALLINE DUCTILE LIQUID IMMISCIBLE Fe-Si-B-In ALLOY PRODUCED BY TWO-COMPONENT MELT-SPINNING

Ziewiec

Wojciechowska

Mucha

et al. 2017

mafe

View full text Add to dashboard Cite

show abstract

“…The typical microstructure of phase separation is classified into an interconnected structure or a droplet-like structure by mechanisms such as spinodal decomposition and nucleation growth [1][2][3]. The liquid-liquid phase separation (LLPS) occurs first above the liquidus or in the undercooled liquid, after which each liquid region undergoes a liquid-to-glass or liquid-to-crystal transition through a combination of rapid quenching techniques and container-less undercooling, resulting in the formation of a two-phase amorphous alloy, two-phase crystal or one-phase crystal, one-phase amorphous alloy.…”

Section: Introductionmentioning

confidence: 99%

Vitrification and Crystallization of Phase-Separated Metallic Liquid

Cheng¹,

W²,

Wang³

et al. 2017

Metals

View full text Add to dashboard Cite

Abstract:The liquid-liquid phase separation (LLPS) behavior of Fe 50 Cu 50 melt from 3500 K to 300 K with different rapid quenching is investigated by molecular dynamics (MD) simulation based on the embedded atom method (EAM). The liquid undergoes metastable phase separation by spinodal decomposition in the undercooled regime and subsequently solidifies into three different Fe-rich microstructures: the interconnected-type structure is kept in the glass and crystal at a higher cooling rate, while the Fe-rich droplets are found to crystalize at a lower cooling rate. During the crystallization process, only Fe-rich clusters can act as the solid nuclei. The twinning planes can be observed in the crystal and only the homogeneous atomic stacking shows mirror symmetry along the twinning boundary. Our present work provides atomic-scale understanding of LLPS melt during the cooling process.

show abstract

“…The same effect is studied more elaborately in micro and zero gravity conditions on board International Space Station (ISS) by NASA and ESA (CETSOL) [42]. Various theories such as Liquid-Liquid Transition (LLT) [43], and phase separation prior liquid-to-solid transformation [44] have been proposed to explain their microstructural evolution but still, our knowledge about their exact mechanisms of formation and evolution at microstructural level [45] is scarce and limited. With experimental methodologies, efforts have also been focused to utilize well established solidification theories [46] [47] [48] to investigate and predict microstructural evolution during solidification in additive manufacturing using advanced multi-scale, multi-physics simulation and parallel programming strategies.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Solidification Parameters during Zr Based Bulk Metallic Glass Matrix Composite’s (BMGMCs) Additive Manufacturing

Rafique¹

2018

ENG

View full text Add to dashboard Cite

After a silence of three decades, bulk metallic glasses and their composites have re-emerged as a competent engineering material owing to their excellent mechanical properties not observed in any other engineering material known till date. However, they exhibit poor ductility and little or no toughness which make them brittle and they fail catastrophically under tensile loading. Exact explanation of this behaviour is difficult, and a lot of expensive experimentation is needed before conclusive results could be drawn. In present study, a theoretical approach has been presented aimed at solving this problem. A detailed mathematical model has been developed to describe solidification phenomena in zirconium based bulk metallic glass matrix composites during additive manufacturing. It precisely models and predicts solidification parameters related to microscale solute diffusion (mass transfer) and capillary action in these rapidly solidifying sluggish slurries. Programming and simulation of model is performed in MATLAB ® . Results show that the use of temperature dependent thermophysical properties yields a synergic effect for multitude improvement and refinement simulation results. Simulated values proved out to be in good agreement with prior simulated and experimental results.

show abstract

Phase separation in metallic glasses

Cited by 233 publications

References 319 publications

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AMORPHOUS/CRYSTALLINE DUCTILE LIQUID IMMISCIBLE Fe-Si-B-In ALLOY PRODUCED BY TWO-COMPONENT MELT-SPINNING

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AMORPHOUS/CRYSTALLINE DUCTILE LIQUID IMMISCIBLE Fe-Si-B-In ALLOY PRODUCED BY TWO-COMPONENT MELT-SPINNING

Vitrification and Crystallization of Phase-Separated Metallic Liquid

Simulation of Solidification Parameters during Zr Based Bulk Metallic Glass Matrix Composite’s (BMGMCs) Additive Manufacturing

Contact Info

Product

Resources

About