Supercooled Liquid Region
New Pd Based Bulk Glassy Alloys with High Glass Forming Ability and Large Supercooled Liquid Region
... and supercooled liquid region and the resulting Pd–Pt–Cu–P bulk glassy alloy can be regarded as a new type of Pd-based bulk glassy alloy which is important for basic research and biomedical ...
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Thermoplastic forming and related studies of the supercooled liquid region of metallic glasses
... Tanner and Ray examined the ZrTiBe system for glass forming compositions and found many alloys could be made amorphous in 100μm thick ribbons [11-14]. Heat capacity measurements conducted in a DSC on some of the ...
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Ultrasonic Investigation of the Elastic Properties and Liquid Fragility of Bulk Metallic Glasses in the Supercooled Liquid Region
... In situ ultrasonic methods utilizing a novel notched sample geometry are discussed in Section 2.4 and are applied to a variety of metallic glass forming systems with a range of Angell fragilities in Chapter 5. Two of the ...
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Thermoplastic Forming and Related Studies of the Supercooled Liquid Region of Metallic Glasses
... Metallic glasses have some amazing properties that captured my imagination and determined my path for grad school. In APh 110, Winter term 2003-2004, Dr. William L. Johnson gave a seminar lecture describing his research ...
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Direct Comparison between Critical Cooling Rate and Some Quantitative Parameters for Evaluation of Glass Forming Ability in Pd Cu Ni P Alloys
... For the last decade, multi-component alloy systems with particular compositions have been reported to cause a signifi- cant increase in glass-forming ability (GFA). As a result, bulk metallic glasses (BMG) with a ...
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Relationship between Deformation and Crystallization in Zr60Al15Ni25 and Zr65Al7 5Cu27 5 Metallic Glass
... wide supercooled liquid region below the crystallization temper- ...a supercooled liquid region, homogeneous deformation occurs and a unique viscous plasticity ...
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Viscous Flow Workability of Ni Cr P B Metallic Glasses Produced by Melt Spinning in Air
... 12, 15, 18, 21, 24, 27 and 30 at%) alloys. Figures 2(a) and (b) show the examples of the XRD patterns and the DSC curves of the Ni-Cr-P-B alloy samples, respectively. All the melt- spun samples have a single ...
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Thermal Stability and Mechanical Properties of Glassy and Amorphous Ni Nb Zr Alloys Produced by Rapid Solidification
... Rapidly solidified Nb–Ni 1) and Ni–Zr 2,3) alloys are known to have an amorphous phase in their wide composition ranges. Aoki et al. have examined hydrogen absorption properties of rapidly solidified Ni–Zr alloys, in ...
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Deformation Behavior of Pt based Metallic Glass at Elevated Temperatures
... wide supercooled liq- uid region of more than 60 K were ...the supercooled liquid region means the temperature range be- tween glass transition temperatute (Tg) and ...the ...
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Crystallization Behavior and Structural Stability of Zr50Cu40Al10 Bulk Metallic Glass
... broad supercooled liquid region, by using differential scan- ning calorimetry (DSC), X-ray diffraction, field-emission scanning electron microscopy (FE-SEM, JSM-6500F: ...
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Investigations on Glass Forming Ability of Hf alloys by Mathematical Modeling and Optimizations
... influence make such optimizations necessary. From the short theoretical basis presented in Section 2, it is seen that a large supercooled liquid region Tx combined with high values for Tg=Tl and Tg=Tm ...
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Excellent Thermal Stability and Bulk Glass Forming Ability of Fe B Nb Y Soft Magnetic Metallic Glass
... 300 s, 600 s, 1.2 ks and 3.6 ks to induce devitrification. The XRD patterns of the annealed specimens in Fig. 5 show crystallization behavior of the glassy ribbon. The sharp peaks diffracted from crystalline phase(s) were ...
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Thermal Stability and Soft Magnetic Properties of (Fe, Co) (Nd, Dy) B Glassy Alloys with High Boron Concentrations
... atomic sizes among the constituents and the strong chemi- cal affinities of RE–B, RE–Co and RE–Fe pairs contribute to the strengthening of network of the prism, leading to the suppression of the rearrangement of the ...
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Viscosity Measurements of Zr55Cu30Al10Ni5 and Pd40Cu30Ni10P20 Supercooled Liquid Alloys by Using a Penetration Viscometer
... absolute temperature and the temperature to reach an infinite value of viscosity, respectively. In this case, the viscosity over the entire temperature range was fitted by using the measured-values of the ...
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Ultrasound Induced Structural Anomaly of Supercooled Liquid in Some Bulk Metallic Glasses
... high-frequency ultrasound vibrations at elevated temperature, and found that the structural anomaly is induced by ultrasound vibrations in a supercooled liquid region. The electromagnetic acoustic ...
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Formation, Thermal Stability and Mechanical Properties of Zr Nb Cu Ni Al Bulk Metallic Glasses
... 2 The temperature interval of supercooled liquid region Tx , the reduced glass transition temperature Trg Tg =Tl and the parameter for the Zr62x Nbx Cu15:4 Ni12:6 Al10 glassy alloys...[r] ...
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Viscous Flow Behavior and Workability of Mg Cu (Ag) Gd Bulk Metallic Glasses
... 3, 10 at%) amorphous alloy rods. DSC traces of the metallic glasses are shown in Fig. 1(b). The samples exhibit a clear glass transition, followed by a broad supercooled liquid region, and the ...
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Formation and High Mechanical Strength of Bulk Glassy Alloys in Zr Al Co Cu System
... Since the first syntheses of bulk glassy alloys in metal- metal alloy systems without any metalloid elements such as Ln-, 1) Mg- 2) and Zr- 3) based alloys by copper mold casting methods, bulk glassy alloys have been ...
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Synthesis and Thermal Stability of New Ni Based Bulk Glassy Alloy with Excellent Mechanical Properties
... Ti concentration range of 20–25 at%. It is therefore con- cluded that the addition of Ti to Ni-Ta binary glassy alloys is effective in increaseing the stability of supercooled liquid and GFA. We examined the ...
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Synthesis of Fe Based Metallic Glass–Pd Based Metallic Glass Composite by Slightly Pressured Liquid Phase Sintering
... resulting liquid squeezing we can control both packing state of the solid particles and the liquid volume ...similar liquid volume fraction of ...and liquid constituents was 83 : 17, and ...
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