Zn22Al4Ag ALLOY MICROWIRES CASTING TO RAPID SOLIDIFICATION PROCESS BY ROTATING DRUM

In this work, the Zn22Al4Ag alloy was synthesized by melting in a muffle furnace.The alloy obtained was characterized by Scanning Electron Microscopy Energy Dispersive Spectroscopy and was analyzed by the X-Ray Diffraction technique, where the crystallinity of the material was verified before and after being processed. Likewise, the Differential Scanning Calorimetry technique was used to obtain the temperatures where phase transformations occurin the alloy. These results were fed to the Termocalc®, software to numerically obtain the phase diagram of the alloy. Subsequently, a section of the ingot was taken to the rapid solidification process by rotating drum. The process variables were manipulated: jet stability, nozzle diameter, distance from the nozzle surface to the cooling medium, the delay time of the molten material in the crucible, speed of the rotating drum and jet angle, until obtaining a microwire with a diameter of ~ 160µm. Finally, it was determined that inadequate control of these parameters can result in powders, flakes or blockage of the crucible outlet. Potentially uses within the micro and nanoworld as an analogy to structural elements and electrical conductors, in addition to its current use as a coating anti-corrosive. Key Words: ZnAlAg alloy, Melt spinning process, Microwire, DSC analysis, Thermodynamic simulation

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Tunable Mechanical Properties of Ti-Zr-Ni-Cr-V Amorphous Ribbons via Different Melt Spinning Speeds during Rapid Solidification Process

Materials ◽

10.3390/ma11060947 ◽

2018 ◽

Vol 11 (6) ◽

pp. 947 ◽

Cited By ~ 5

Author(s):

Bing Jiang ◽

Jianxin Wang ◽

Lingfeng Xu ◽

Chengyuan Qian ◽

Tiexin Liu ◽

...

Keyword(s):

Mechanical Properties ◽

Rapid Solidification ◽

Melt Spinning ◽

Solidification Process ◽

Rapid Solidification Process ◽

Amorphous Ribbons ◽

Tunable Mechanical Properties

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Analysis of the extremely rapidly cooled molten system (LiF–CaF2)eut–LaF3

New Journal of Chemistry ◽

10.1039/c7nj05156e ◽

2018 ◽

Vol 42 (6) ◽

pp. 4612-4623 ◽

Cited By ~ 2

Author(s):

Michal Šimurda ◽

Miroslav Boča ◽

Peter Švec ◽

Dušan Janičkovič ◽

...

Keyword(s):

Molten Salt ◽

Rapid Solidification ◽

Melt Spinning ◽

Solidification Process ◽

Salt System ◽

Rapid Solidification Process ◽

Molten Salt System

A rapid solidification process (melt spinning) was applied to the fluoride molten salt system (LiF–CaF2)eut–xLaF3 (x = 0, 5, 10, 20, and 30 mol%).

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Rapid solidification of Ni3Al by Osprey deposition

Journal of Materials Research ◽

10.1557/jmr.1991.0361 ◽

1991 ◽

Vol 6 (2) ◽

pp. 361-365 ◽

Cited By ~ 18

Author(s):

D.G. Morris ◽

M.A. Morris

Keyword(s):

High Temperature ◽

Rapid Solidification ◽

Cell Walls ◽

Melt Spinning ◽

Solidification Process ◽

High Temperature Annealing ◽

Rapid Solidification Process ◽

Material Fabrication ◽

Very High ◽

Segregation Structure

A Ni3Al-based alloy containing Cr is examined after preparation by Osprey deposition. The microstructure consists of solidified spherical regions showing cellular segregation interspersed with regions of finer, equiaxed segregation morphology. The segregation structure is characterized by cell interiors rich in aluminum and poor in chromium, while the cell walls are poor in aluminum and rich in chromium. This segregation pattern is the inverse of that expected, based on earlier melt spinning experience, and is explained in terms of the undercooling of the melt prior to solidification. Very high temperature annealing is required to homogenize the material, despite the use of this rapid solidification process for material fabrication.

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New Fe-Ni Based Metal-Metalloid Glassy Alloys Prepared by Mechanical Alloying and Rapid Solidification

MRS Proceedings ◽

10.1557/proc-455-489 ◽

1996 ◽

Vol 455 ◽

Cited By ~ 3

Author(s):

J. J. Suñol ◽

M. T. Clavaguera-Mora ◽

N. Clavaguera ◽

T. Pradell

Keyword(s):

Mechanical Alloying ◽

Rapid Solidification ◽

Melt Spinning ◽

Magnetic Interaction ◽

Processing Route ◽

Mechanically Alloyed ◽

Scanning Calorimetry ◽

Glassy Alloys ◽

Rapidly Solidified ◽

Thermal Stability Of

ABSTRACTMechanical alloying and rapid solidification are two important routes to obtain glassy alloys. New Fe-Ni based metal-metalloid (P-Si) alloys prepared by these two different processing routes were studied by differential scanning calorimetry and transmission Mössbauer spectroscopy. Mechanical alloyed samples were prepared with elemental precursors, and different nominal compositions. Rapidly solidified alloys were obtained by melt-spinning. The structural analyses show that, independent of the composition, the materials obtained by mechanical alloying are not completely disordered whereas fully amorphous alloys were obtained by rapid solidification. Consequently, the thermal stability of mechanically alloyed samples is lower than that of the analogous material prepared by rapid solidification. The P/Si ratio controls the magnetic interaction of the glassy ribbons obtained by rapid solidification. The experimental results are discussed in terms of the degree of amorphization and crystallization versus processing route and P/Si ratio content.

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Corrigendum to “Effect of rapid solidification process on the electrode performance of Zr(Ni0.55V0.1Mn0.3Cr0.05)2.1” [J. Alloys Comp. 293–295 (1999) 756–761]

Journal of Alloys and Compounds ◽

10.1016/s0925-8388(99)00809-9 ◽

2000 ◽

Vol 302 (1-2) ◽

pp. 314

Author(s):

Kangying Shu ◽

Yongquan Lei ◽

Xiaoguang Yang ◽

Ganfu Lin ◽

Qidong Wang ◽

...

Keyword(s):

Rapid Solidification ◽

Solidification Process ◽

Rapid Solidification Process ◽

Electrode Performance

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The characteristic of crystal growth of Nd–Fe–B cast strips during the rapid solidification process

Journal of Magnetism and Magnetic Materials ◽

10.1016/j.jmmm.2015.08.004 ◽

2015 ◽

Vol 396 ◽

pp. 283-287 ◽

Cited By ~ 4

Author(s):

Jingdai Wang ◽

Yu Meng ◽

Huaxia Zhang ◽

Hui Tang ◽

Rongbing Lin ◽

...

Keyword(s):

Crystal Growth ◽

Rapid Solidification ◽

Solidification Process ◽

Rapid Solidification Process

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Characterization of AM60 Magnesium Alloy Prepared by Rapid Solidification and Plastic Consolidation Technique

Materials Science Forum ◽

10.4028/www.scientific.net/msf.667-669.997 ◽

2010 ◽

Vol 667-669 ◽

pp. 997-1002

Author(s):

Tomasz Tokarski

Keyword(s):

Mechanical Properties ◽

Magnesium Alloy ◽

Rapid Solidification ◽

Melt Spinning ◽

Bulk Material ◽

Structure Refinement ◽

Hot Extrusion ◽

Solidification Process ◽

Protective Atmosphere ◽

Material Structure

Magnesium and its alloys are attractive candidates for automotive and aerospace applications due to their relatively high strength and low density. However, their low ductility determined by hcp structure of material results in limitation of plastic deformation processing. In order to improve ductility as well as mechanical properties, structure refinement processes can be used. It is well known that effective refining of the material structure can be achieved by increasing the cooling rate during casting procedures, hence rapid solidification process (RSP) has been experimented for the fabrication of magnesium alloys. The present paper reports an experimental investigation on the influence of rapid solidification on the mechanical properties of AM60 magnesium alloy. In order to obtain RS material melt spinning process was applied in protective atmosphere, resulting in formation of RS ribbons. Following consolidation of the RS material is necessary to obtain bulk material with high mechanical properties, as so hot extrusion process was applied. It was noticed that application of plastic consolidation by hot extrusion is the most effective process to achieve full densification of material. For comparison purposes, the conventionally cast and hot extruded AM60 alloy was studied as well. The purpose of the present study was to investigate in detail the effect of rapid solidification and extrusion temperature on the structure and mechanical properties of the materials.

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Fabrication of piezoelectric poly(l-lactic acid)/BaTiO3 fibre by the melt-spinning process

Scientific Reports ◽

10.1038/s41598-020-73261-3 ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

Hyun Ju Oh ◽

Do-Kun Kim ◽

Young Chan Choi ◽

Seung-Ju Lim ◽

Jae Bum Jeong ◽

...

Keyword(s):

Phase Transition ◽

Lactic Acid ◽

Crystalline Phase ◽

Melt Spinning ◽

Piezoelectric Properties ◽

Polymeric Materials ◽

Processing Conditions ◽

Post Processing ◽

Scanning Calorimetry ◽

Spinning Process

Abstract Poly(l-lactic acid) (PLLA) based piezoelectric polymers are gradually becoming the substitute for the conventional piezoelectric ceramic and polymeric materials due to their low cost and biodegradable, non-toxic, piezoelectric and non-pyroelectric nature. To improve the piezoelectric properties of melt-spun poly(l-lactic acid) (PLLA)/BaTiO3, we optimized the post-processing conditions to increase the proportion of the β crystalline phase. The α → β phase transition behaviour was determined by two-dimensional wide-angle x-ray diffraction and differential scanning calorimetry. The piezoelectric properties of PLLA/BaTiO3 fibres were characterised in their yarn and textile form through a tapping method. From these results, we confirmed that the crystalline phase transition of PLLA/BaTiO3 fibres was significantly enhanced under the optimised post-processing conditions at a draw ratio of 3 and temperature of 120 °C during the melt-spinning process. The results indicated that PLLA/BaTiO3 fibres could be a one of the material for organic-based piezoelectric sensors for application in textile-based wearable piezoelectric devices.

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