-
Article
Open AccessFormation of metallic magnetic clusters in a Kondo-lattice metal: Evidence from an optical study
Magnetic materials are usually divided into two classes: those with localised magnetic moments and those with itinerant charge carriers. We present a comprehensive experimental (spectroscopic ellipsomerty) and...
-
Article
Solidification and melting of high temperature materials: in situ observations by synchrotron radiation
Until recently understanding the solidification behavior of high temperature materials, including many intermetallic systems, required evaluation of a great number of individual solidification experimental res...
-
Article
Influence of heat distribution and zone shape in the floating zone growth of selected oxide compounds
The effects of heat distribution, process parameters, and the ambient atmosphere on the characteristics of the molten zone are considered for floating zone (FZ) crystal growth of selected oxide compounds with ...
-
Article
Microstructural Transitions in Commercial Fe-Ni–Based Soft-Magnetic Alloys Quenched from Undercooled Liquid Droplets
Liquid droplets of three commercial Fe-Ni–based alloys were undercooled to different temperatures by electromagnetic levitation and quenched. Discontinuous changes in the grain size and microstructure as a functi...
-
Article
Production and mechanical properties of metallic glass-reinforced Al-based metal matrix composites
Al-based metal matrix composites were synthesized through powder metallurgy methods by hot extrusion of elemental Al powder blended with different amounts of metallic glass reinforcements. The glass reinforcem...
-
Article
Open AccessExperimental and Thermodynamic Assessment of the Nb-Ni-Y System
Phase equilibria in the ternary Nb-Ni-Y system are studied experimentally for the first time using x-ray diffraction, electron probe microanalysis, and differential scanning calorimetry in combination with lev...
-
Article
Metastable phase formation in undercooled Fe-Co melts under terrestrial and parabolic flight conditions
Soft magnetic Fe-Co alloys display primary fcc phase solidification for>19,5 at% Co in conventional near-equilibrium solidification processes. Undercooled Fe-Co melt drops within the composition range of 30 to...
-
Article
Thermodynamic properties of B2-AlFeNi Alloys. Part I: Investigation by knudsen effusion mass spectrometry
The vaporization of Al-Fe-Ni alloys has been investigated in the temperature range 1180 to 1508 K by Knudsen effusion mass spectrometry (KEMS). Fourteen different compositions were examined in the B2 region: 1...
-
Article
Thermodynamic reassessment of the Cu-O phase diagram
Parts of the copper-oxygen equilibrium phase diagram were reassessed using the calculation of phase diagram technique (CALPHAD). The model parameters were optimized to yield the best fit between calculated and...
-
Article
Microstructure, mechanical properties, and fracture mechanism of As-cast (Ti0.5Cu0.25Ni0.15Sn0.05Zr0.05)100−x Mo x composites
Copper mold cast cylinders of (Ti0.5Cu0.25Ni0.15Sn0.05Zr0.05)100−x Mo x composites are prepared. Addition of Mo in the bulk glass-forming alloy induces t...
-
Article
TEM and XAS Characterization of Hard Magnetic Phase in Nd-Fe Alloys
Nd80Fe20 alloys were prepared by copper mold casting and directional solidification (DS) to obtain a coarse microstructure, which can be identified unambigously. The mold-cast samples exhibit a fine globular eute...
-
Article
Ductile Dendritic Phase Reinforced Ti-Base Bulk Metallic Glass-Forming Alloys
Bulk metallic glasses (BMG) exhibit high strength but limited ductility due to their inhomogeneous deformation behavior under load, which seriously limits their application. To prevent the inhomogeneous deform...
-
Article
Enhanced plasticity in a Ti-based bulk metallic glass-forming alloy by in situ formation of a composite microstructure
A bulk metallic glass-forming Ti–Cu–Ni–Sn alloy with in situ formed composite microstructure prepared by both centrifugal and injection casting presents more than 6% plastic strain under compressive stress at roo...
-
Article
Reassessment of Ni-Al and Ni-Fe-Al solidus temperatures
Solidus temperatures of the B2 NiAl phase have been determined by high-temperature differential thermal analysis for binary melt compositions NixAl100−x (45<x<57) and for ternary alloys FeyNi50−y
-
Article
Effect of Preparation on Glass Formation and Magnetic Properties of Nd-Fe-Co-Al-B Alloys
The effect of alternative preparation methods (copper mold casting, melt spinning, and mechanical attrition) on amorphization and properties of Nd57Fe20Co5Al10B8 and Nd40Fe40Co5Al8B7 alloys has been investigated....
-
Chapter
Anisotropic Upper Critical Field in TbxY1-xNi2B2C Single Crystals
The effect of paramagnetic Tb-ions on the superconducting upper critical field H c2 of pseudoquaternary TbxY1-xNi2B2C intermetallic compounds has been studied o...
-
Article
Glass-forming Ability and Magnetic Properties of Nd70−xFe20Al10Cox Alloys
The influence of Co addition on the glass-forming ability of slowly cooled Nd70-xFe20Al10Cox alloys (0 ≤ x ≤ 10) was studied by x-ray diffraction, constant-rate heating calorimetry, and magnetic measurements. Wit...
-
Article
Deformation-induced microstructural changes in Fe40Ni40P14B6 metallic glass
The effect of mechanical deformation via high-energy ball milling on the structure of the Fe40Ni40P14B6 metallic glass was studied by means of x-ray diffactometry, transmission electron microscopy (TEM), and diff...
-
Article
Phase relations and superconducting properties of the Y–Ni–B–C system
The influence of composition and high-temperature heat treatment on phase content and superconducting properties of the Yni2B2C phase was investigated. Phase relations in those parts of the Y–Ni–B–C quaternary ph...
-
Article
Effects of composition on microstructures of rapidly solidified Ni–Al alloys
Microstructures of melt-spun Ni–Al alloys with compositions from 61–85 at% Ni were studied by means of transmission electron microscopy, X-ray diffraction analysis and optical microscopy. The microstructures o...
