نتایج جستجو برای: amorphous alloy

تعداد نتایج: 76796  

2008
Huigang Shi Desheng Xue

Amorphous Co1-xPx alloy nanowire arrays with different sizes and 6.8 wt% x 9.9 wt% were fabricated in an anodic aluminum oxide film by electrodeposition. Transmission electron microscopy, selected area electron diffraction, X-ray fluorescence spectrometer, inductively coupled plasma-atomic emission spectrometer, X-ray diffraction spectrometer and vibrating sample magnetometer are employed to st...

2010
Yin Hu Zhengcao Li Zhengjun Zhang

To investigate the irradiation properties of Mo-Re alloy of low Re content (atm%: 0% 8:4%), Mo-Re alloy films were irradiated by 200 keV xenon ions at the dose of 5 10 ions/cm. Different irradiation effects were observed on the samples of different Re content. While the sample of pure Mo remained the same after irradiation, obvious localized amorphization phenomenon took place in the sample wit...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2016
Fabian von Rohr Michał J Winiarski Jing Tao Tomasz Klimczuk Robert Joseph Cava

High-entropy alloys are made from random mixtures of principal elements on simple lattices, stabilized by a high mixing entropy. The recently discovered body-centered cubic (BCC) Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor appears to display properties of both simple crystalline intermetallics and amorphous materials; e.g., it has a well-defined superconducting transition along with an exc...

Journal: :Journal of the mechanical behavior of biomedical materials 2011
J Fornell N Van Steenberge A Varea E Rossinyol E Pellicer S Suriñach M D Baró J Sort

The effects of annealing treatments on the microstructure, elastic/mechanical properties, wear resistance and corrosion behavior of rod-shaped Ti40Zr10Cu38Pd12 bulk glassy alloys, synthesized by copper mold casting, are investigated. Formation of ultrafine crystals embedded in an amorphous matrix is observed for intermediate annealing temperatures, whereas a fully crystalline microstructure dev...

2001
Annett Gebert Nahla Ismail Ulrike Wolff Margitta Uhlemann Frank Schneider Jürgen Eckert Ludwig Schultz

tive high potential for applications. Bulk amorphous Zr-based alloys exhibit interesting mechanical properties, i.e. extremely high yield strength combined with a relatively low Young’s modulus at ambient temperatures as well as Newtonian flow in the supercooled liquid state [3]. However, applications of these materials require also high stability in various environments in order to ensure an a...

In this study, the crystallization behavior of melt-spun Al87Ni10La3 amorphous phase was investigated by using X-ray diffraction and non-isothermal differential thermal analysis techniques. The results demonstrated that the amorphous phase exhibited two-stage crystallization on heating, i.e., at first step the amorphous phase transforms into α-Al phase and at second step Al11La3 and Al3Ni inter...

2000
F. Ye K. Lu

The crystallization kinetics of an Al89La6Ni5 amorphous alloy were studied by thermal analysis. Both continuous heating and isothermal DSC traces showed that the Al89La6Ni5 amorphous alloy undergoes a two-stage crystallization process upon heating. The ®rst transformation, in which fcc-Al precipitates from the amorphous matrix, is a nucleation and three-dimensional di€usion-controlled growth pr...

2005
N. ELIAZ D. ELIEZER

HYDROGEN interaction with amorphous alloys has Ribbons (,25-mm thick) of amorphous Fe80B11Si9 were been studied extensively due to both scientific and technoused for this research. The ribbons were produced by planarlogical interest. In the framework of a more comprehensive flow casting and were kindly supplied by AlliedSignal Inc. investigation of hydrogen interaction with amorphous and (Parsi...

The nanocrystallization of Co67Fe4Cr7Si8B14 amorphous ribbons which prepared by planar flow melt spinning process (PFMS) was investigated. Crystallization of the ribbons was studied by differential thermal analysis (DTA), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The DTA result of amorphous ribbon at heating rate of 10˚C/min showedoccurrence of phase transitions in two...

2010
Yeong-Hwa Chang Chang-Hung Hsu Ching-Pei Tseng

The effects of different ribbon widths on the magnetic properties of an amorphous alloy were studied. DSC, TGA, XRD, VSM, SEM and ER techniques were used. For SA1 alloy, the sample during primary crystallization for the 142mm and 213mm width ribbons are quite similar; however the magnetic properties and morphologies are significantly different. Finally, the measurements of a three-phase 2MVA am...

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