News

News

New Reactor-liner Alloy Material Offers Strength, Resilience

Data: 2019-03-07
Views: 17


This is Osman El Atwani (left) and Enrique Martinez at the transmission electron microscope.
Credit: Los Alamos National Laboratory

A new tungsten-based alloy developed at Los Alamos National Laboratory can withstand unprecedented amounts of radiation without damage. Essential for extreme irradiation environments such as the interiors of magnetic fusion reactors, previously explored materials have thus far been hobbled by weakness against fracture, but this new alloy seems to defeat that problem.

'This material showed outstanding radiation resistance when compared to pure nanocrystalline tungsten materials and other conventional alloys,' said Osman El Atwani, the principal investigator of the 'Radiation Effects and Plasma Material Interactions in Tungsten Based Materials' project at Los Alamos. 'Our investigations of the material mechanical properties under different stress states and response of the material under plasma exposure are ongoing.'

'It seems that we have developed a material with unprecedented radiation resistance,' said principal investigator Enrique Martinez Saez at Los Alamos. 'We have never seen before a material that can withstand the level of radiation damage that we have observed for this high-entropy [four or more principal elements] alloy. It seems to retain outstanding mechanical properties after irradiation, as opposed to traditional counterparts, in which the mechanical properties degrade easily under irradiation.'

Arun Devaraj, a materials scientist and project collaborator at Pacific Northwest National Laboratory, noted, 'Atom probe tomography revealed an interesting atomic level layering of different elements in these alloys, which then changed to nanoclusters when subjected to radiation, helping us to better understand why this unique alloy is highly radiation tolerant.'

The material, created as a thin film, is a quaternary nanocrystalline tungsten-tantalum-vanadium-chromium alloy that has been characterized under extreme thermal conditions and after irradiation.

'We haven't yet tested it in high-corrosion environments,' Martinez Saez said, 'but I anticipate it should perform well there also. And if it is ductile, as expected, it could also be used as turbine material since it is a refractory, high-melting-point material.'

Story Source:

Materials provided by Los Alamos National Laboratory



News / Recommended news More
2020 - 05 - 14
MIM is currently the most scientific near net shape forming technology for metal parts formation. It can flexibly adjust to various performance indexes and has been successfully applied to popular areas such as auto parts, 3C digital, medical equipment and tool locks. Hence, traditional molding technologies such as CNC fine processing, to some extent, are being replaced. Although the future of MIM...
2020 - 05 - 14
The East China Powder Metallurgy Technology Exchange Meeting, rotationally presented by the powder metallurgy societies in East China, has been successfully held for 17 years since 1982. It’s considered as one of the important platforms for China's powder metallurgy industry exchanges, and has actively promoted the flourishing development of the industry and related industries in East China and ev...
2020 - 05 - 14
Advanced ceramics are widely applied in industry sectors, high-tech world and new industries. With annual growth rate of 8%, its market in China values hundreds of billions of CNY. In recent years, the acceleration of China’s high-end industries and new industries development, for example, advanced manufacturing, 5G communications, semiconductor equipment and chip packaging, 3D printing and new en...
2020 - 05 - 14
Ceramic 3D printing can be used in preparation of multifunctional ceramics with complex structure and high precision, and will be widely used in architecture, engineering, medicine, aerospace and more. In recent years, metal and plastic 3D printing companies is shifting to the ceramic materials field that has increasing demand for strong, tough and high temperature resistant parts, which promotes ...
Share:
Uniris Exhibition Shanghai Co., Ltd.
Shanghai Branch
Tel:4000 778 909
E-mail:irisexpo@163.com
  
Guangzhou Branch
Tel:020-8327 6389
E-mail:pmchina@unifair.com

CCEC CHINA official website
犀牛云提供企业云服务
Scan the QR code to visit the official website by phone