期刊
PHYSICA SCRIPTA
卷 96, 期 12, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1402-4896/ac2181
关键词
tungsten; neutron irradiation; irradiation hardening; microstructure
资金
- FOD fusion grant
- Euratom research and training programme 2014-2018 [633053]
- Euratom research and training programme 2019-2020 [633053]
The study evaluated the microstructure and hardness of four tungsten grades before and after neutron irradiation, investigating the influence of microstructure on neutron damage accumulation, characterizing through various experimental techniques.
The development of advanced tungsten grades able to tolerate irradiation damage combined with thermo-mechanical loads is important for design of plasma-facing components for DEMO. The material microstructure (i.e. grain size, dislocation density, sub grains, texture) is defined by manufacturing and post heat treatment processes. In turn, the initial microstructure might have an important influence on the accumulation of neutron damage because irradiation defects interact with microstructural defects evolving into a new microstructural state. In this work, the microstructure and hardness of four tungsten grades is assessed before and after neutron irradiation performed at 600, 1000 and 1200 degrees C, up to a dose of similar to 1.2 dpa. Experimental characterization involves hardness testing, energy dispersive spectroscopy, electron backscatter diffraction, and transmission electron microscopy. The investigated grades include Plansee and AT&M ITER specification tungsten, as well as fine grain tungsten produced by spark plasma sintering, and ultra-fine grain tungsten reinforced with 0.5 wt% ZrC particles.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据