Crystallization Behavior of Fe
                    
                      50−
                      x
                    
                    Cr
                    15
                    Mo
                    14
                    C
                    15
                    B
                    6
                    M
                    
                      x
                    
                    (
                    x
                    = 0, 2 and M = Y, Gd) Bulk Metallic Glasses and Ribbons by
                    in situ
                    High Temperature X-Ray Diffraction

Different bulk metallic glasses (BMGs) were prepared in ductile Cu47.5Zr47.5Al5, Zr62Cu15.4Ni12.6Al10, and brittle Zr55Ni5Al10Cu30 alloys by controlling solidification conditions. The achieved microstructures were characterized by x-ray diffraction, differential scanning calorimetry, transmission electron microscopy, and synchrotron- based high-energy x-ray diffraction. Monolithic BMGs obtained by high-temperature injection casting are brittle, while BMGs bearing some nanocrystals with the size of 3 to 7 nm and 2 to 4 nm, obtained by low-temperature injection casting and in situ suction casting, respectively, exhibit good plasticity. It indicates that the microstructures of BMGs are closely affected by the solidification conditions. Controlling the solidification conditions could improve the plasticity of BMGs.

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Undercooling behavior of Zr–Cu–Ni–Al bulk metallic glasses investigated by in situ synchrotron high energy X-ray diffraction

Materials Science and Engineering A ◽

10.1016/j.msea.2012.06.030 ◽

2012 ◽

Vol 555 ◽

pp. 36-43 ◽

Cited By ~ 6

Author(s):

D.D. Qu ◽

A. Mizuno ◽

M. Watanabe ◽

J. Bednarcik ◽

J. Shen

Keyword(s):

Metallic Glasses ◽

Bulk Metallic Glasses ◽

High Energy ◽

X Ray Diffraction ◽

X Ray

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In situ X-ray diffraction study on crystallization of shock-wave-quenched Zr-based bulk metallic glasses

Materials Science and Engineering A ◽

10.1016/j.msea.2006.02.339 ◽

2007 ◽

Vol 449-451 ◽

pp. 617-620 ◽

Cited By ~ 3

Author(s):

C. Yang ◽

Z.J. Zhan ◽

C.Z. Fan ◽

R.P. Liu ◽

W.K. Wang

Keyword(s):

Shock Wave ◽

Diffraction Study ◽

Metallic Glasses ◽

Bulk Metallic Glasses ◽

X Ray Diffraction ◽

X Ray

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Thermal expansion of ellinaite (β-CaCr2O4): an in-situ high temperature X-ray diffraction study

Physics and Chemistry of Minerals ◽

10.1007/s00269-020-01126-2 ◽

2021 ◽

Vol 48 (1) ◽

Author(s):

Weihong Xue ◽

Kuan Zhai ◽

Shuangmeng Zhai

Keyword(s):

Thermal Expansion ◽

High Temperature ◽

Diffraction Study ◽

X Ray Diffraction ◽

X Ray

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Inverse Design of Fe-Based Bulk Metallic Glasses Using Machine Learning

Metals ◽

10.3390/met11050729 ◽

2021 ◽

Vol 11 (5) ◽

pp. 729

Author(s):

Junhyub Jeon ◽

Namhyuk Seo ◽

Hwi-Jun Kim ◽

Min-Ha Lee ◽

Hyun-Kyu Lim ◽

...

Keyword(s):

Thermal Properties ◽

Metallic Glasses ◽

Alloy Composition ◽

Relevant Literature ◽

Bulk Metallic Glasses ◽

X Ray Diffraction ◽

X Ray ◽

Ann Models ◽

Wide Scale ◽

Artificial Neural Network Ann

Fe-based bulk metallic glasses (BMGs) are a unique class of materials that are attracting attention in a wide variety of applications owing to their physical properties. Several studies have investigated and designed the relationships between alloy composition and thermal properties of BMGs using an artificial neural network (ANN). The limitation of the wide-scale use of these models is that the required composition is yet to be found despite numerous case studies. To address this issue, we trained an ANN to design Fe-based BMGs that predict the thermal properties. Models were trained using only the composition of the alloy as input and were created from a database of more than 150 experimental data of Fe-based BMGs from relevant literature. We adopted these ANN models to design BMGs with thermal properties to satisfy the intended purpose using particle swarm optimization. A melt spinner was employed to fabricate the designed alloys. X-ray diffraction and differential thermal analysis tests were used to evaluate the specimens.

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