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Showing 1 to 14 of 14 for “"Bulk Metallic Glasses"”.
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Bulk Metallic Glasses based on Precious Metals
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A Methodology For Instrumented Indentation Studies Of Deformation In Bulk Metallic Glasses
Bulk Metallic Glasses (BMGs), also known as amorphous metals, are of considerable scientific and commercial interest due to their random or chaotic structure. Given their potential use as engineering materials, there is a concomitant need to establish their mechanical properties. However, BMGs are …
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Casting and characterization of Fe-(Cr,Mo,Ga)-(P,C,B) soft magnetic bulk metallic glasses
The ferromagnetic bulk metallic glasses (BMGs) started to be investigated only in the last 10 years.They are difficult to cast, but their properties are uniques. The work deals with casting, mechanical and soft magnetic properties of new Fe-based BMGs. Such alloys can be cast directly in samples …
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A constitutive theory for the mechanical response of amorphous metals at high temperatures spanning the glass transition temperature : application to microscale thermoplastic forming of Zr₄₁.₂Ti₁₃.₈Cu₁₂.₅Ni₁₀Be₂₂.₅
Bulk metallic glasses (BMGs) are a promising emerging engineering material distinguished by their unique mechanical properties and amorphous microstructure. In recent years, an extremely promising microscale processing method for bulk metallic glasses, called thermoplasticforming has emerged. As …
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Nanomechanical studies of metallic glasses at ambient and elevated temperatures
Bulk metallic glasses, though attractive for use in structural applications for their high strength and elastic limit, display several unacceptable features upon deformation, including quasi-brittle failure along shear bands, extremely limited tensile ductility, and propensity for fatigue under …
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Phase Formation, Liquid Structure, and Physical Properties of Amorphous- and Quasicrystal-forming Alloys
… 1985 and the development of commercially viable bulk metallic glasses: BMGs) in the mid 1990's a great deal of attention has been given to the characterization of new alloys with desirable properties, such as larger amorphous casting thickness, higher mechanical strength, or hydrogen storage …
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Development of a hybrid thermoplastic forming process for the manufacture of multi-facet and curvilinear surgical blades from bulk metallic glass
Bulk metallic glasses (BMGs) are multi-component alloys that have formed an amorphous atomic structure. This class of materials exhibit a unique combination of high strength/hardness and high elastic limit that is ideal for the formation and retention of a sharp edge. At high temperatures above the …
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Development of temperature and feed rate controllers for a hybrid thermoplastic forming of surgical blades from bulk metallic glass
Bulk metallic glasses (BMG) are multi-component alloys that have an amorphous atomic structure. This new family of alloys exhibits a unique combination of high strength/hardness and high elastic limit, which is ideal for the formation and retention of a sharp edge. At a high temperature above glass …
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Atomistic simulations of radiation damage in amorphous metal alloys
… radiation-induced swelling and ductilization in metallic glasses. The identification of plasticity adjacent to SQZs is an unexpected damage mechanism that could prove a limiting factor for the application of amorphous alloys in radiation environments. To aid selection of amorphous alloys with …
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Thermal and thermoelectric properties of nanostructured materials and interfaces
… of materials from thin films to nanostructured bulk systems, and (2) I discuss my measurements on several materials systems done with these characterization tools. First, I describe the development, assembly, and modification of a time-domain thermoreflectance (TDTR) system that we use to …
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Study of atomic scale dynamics of glass-forming metallic liquids using neutron scattering experiments and molecular dynamics simulations
Bulk metallic glasses are not the archetypal glass-former due to their large propensity for crystallization. They are characterized by complex multi-body interactions; yet have a simple structure that lacks internal degrees of freedom usually present in prototypical network or molecular …
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Structural Evolution In Mechanically Alloyed Fe-based Powder Systems
… 5, 10, 17, 20, 22, 25, 37.5 and 50 at. %) and a bulk metallic glass (BMG) composition (Fe60Co8Zr10Mo5W2B15) were subjected to mechanical alloying in a SPEX 8000 mixer mill. X-ray diffraction technique was employed to study the phase evolution, crystallite size, lattice strain and also to …