Tungsten-Based Composites for Nuclear Fusion Applications

Waseem, Owais Ahmed; Ryu, Ho Jin

doi:10.5772/62434

Cited by 13 publications

(9 citation statements)

References 83 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the mechanical alloying method can also combine and mix materials that have a high melting point with a low melting point [16] [17]. Previous studies have reported by Owais A et al [18] that nuclear fusion devices such as WTaTiVCr at high temperatures and having a high melting point exhibit high mechanical properties. In addition, this type of HEA has recently been investigated such as TixWTaVCr [19],…”

Section: Introductionmentioning

confidence: 99%

Effect of milling time variation on TiTaVWCr HEA powder as nuclear material on microstructure and mechanical properties by a mechanical alloying method

Sutrisna

Prasetiyo²,

Kartikasari³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

TiTaVWCr HEA alloy is a refractory material that is often used as nuclear material. This research uses powder material and milling using the mechanical alloy method. This research aimed to determine the microstructure and mechanical properties of the TiTaVWCr HEA alloy milling process for 4 h, 8 h, 16 h, and 24 h. Tests were carried out using XRD spectra and Secondary Electron Microstructure-Energy Dispersive Spectroscopy (SEM-EDS) to determine the characteristics of the material and its microstructure. The results showed that the HEA model with low milling (4 h and 8 h) microstructure distribution was not uniform, and there was agglomeration in certain areas. After milling was increased to 16 hours, the distribution of elements became uniform, but oxides appeared on Ti became in the formation of Ti-O. The hardness value shows that the longer the milling time, the higher the hardness. This phenomenon is related to the increase in grain dimension, and dislocation density.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of milling time variation on TiTaVWCr HEA powder as nuclear material on microstructure and mechanical properties by a mechanical alloying method

Sutrisna

Prasetiyo²,

Kartikasari³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…first walls) of nuclear fusion reactors are made of W, in order to hold the strength at extremely high temperatures and shield energetic α-and γ-radiations [2]. However, high brittleness is a disadvantage of W. In the nuclear reactor's high temperature and high radiation environment, the surface of W can be eroded by high-energy rays quickly and generates dust, which affects the plasma parameters [3].…”

Section: Introductionmentioning

confidence: 99%

Abnormal interfacial bonding mechanisms of multi-material additive-manufactured tungsten–stainless steel sandwich structure

Wei

et al. 2022

Int. J. Extrem. Manuf.

View full text Add to dashboard Cite

Tungsten (W) and stainless steel (SS) are well known for the high melting point and good corrosion resistance respectively. Bimetallic W-SS structures would offer potential applications in extreme environments. In this study, a SS→W→SS sandwich structure is fabricated via a special laser powder bed fusion (LPBF) method based on an ultrasonic-assisted powder deposition mechanism. Material characterization of the SS→W interface and W→SS interface was conducted, including microstructure, element distribution, phase distribution, and nano-hardness. A coupled modelling method, combining computational fluid dynamics modelling with discrete element method, simulated the melt pool dynamics and solidification at the material interfaces. The study shows that the interface bonding of SS→W (SS printed on W) is the combined effect of solid-state diffusion with different elemental diffusion rates and grain boundary diffusion. The keyhole mode of the melt pool at the W→SS (W printed on SS) interface makes the pre-printed SS layers repeatedly remelted, causing the liquid W to flow into the sub-surface of the pre-printed SS through the keyhole cavities realizing the bonding of the W→SS interface. The above interfacial bonding behaviours are significantly different from the previously reported bonding mechanism based on the melt pool convection during multiple material LPBF. The abnormal material interfacial bonding behaviours are reported for the first time.

show abstract

“…Tungsten-based composites are a significant in the field of nuclear materials. They can improve mechanical properties, oxidation resistances, irradiation resistance, strength and microstructural stability (Waseem and Ryu, 2016).…”

Section: Introductionmentioning

confidence: 99%

Sequential recovery orocesses of tungsten from hubnerite mineral concentrate of Qash Amir mineralized quartz veins, South Eastern Desert, Egypt

Khoziem¹

2021

Physicochem. Probl. Miner. Process.

View full text Add to dashboard Cite

A hubnerite (MnWO4) mineral concentrate was prepared from the mineralized quartz veins of Gabal Qash Amir muscovite granite. This W-concentrate was chemically processed to obtain the more economic highly pure tungsten oxide. To accomplish this goal, two successive atmospheric agitation leaching processes were conducted. The first includes HCl acid agitation leaching to breakdown hubnerite mineral structure. The purpose was also to get rid of the associated Mn and Fe contents from one hand, and to prepare the more important intermediate tungstic acid from the other hand. From the latter, a sodium tungstate (Na2HWO4) leach liquor was adequately prepared after applying the second atmospheric NaOH agitation leeching process using the optimum conditions of 40% caustic soda concentration at solid/ liquid ratio of 1/3, 180 o C for 2h. Finally, 7% Alamine 336 in kerosene was used for extracting 93.7% of W content under the studied optimum conditions of O/A ratio of 1/1, contact time 7 min at room temperature (20±5 o C) and pH of 8.

show abstract

Tungsten-Based Composites for Nuclear Fusion Applications

Cited by 13 publications

References 83 publications

Effect of milling time variation on TiTaVWCr HEA powder as nuclear material on microstructure and mechanical properties by a mechanical alloying method

Effect of milling time variation on TiTaVWCr HEA powder as nuclear material on microstructure and mechanical properties by a mechanical alloying method

Abnormal interfacial bonding mechanisms of multi-material additive-manufactured tungsten–stainless steel sandwich structure

Sequential recovery orocesses of tungsten from hubnerite mineral concentrate of Qash Amir mineralized quartz veins, South Eastern Desert, Egypt

Contact Info

Product

Resources

About