|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Energy Materials 2017: Materials for Nuclear Energy
||Impact of Neutron Irradiation on Helium Desorption Behavior in Iron
||Xunxiang Hu, Kevin Field, David Woodley, Yutai Katoh
|On-Site Speaker (Planned)
The synergistic effect of neutron irradiation and helium production is an important concern for the use of steels in fusion reactors. We investigated the impact of neutron irradiation on helium desorption behavior of pure iron. Two pure iron samples were neutron irradiated in HFIR at ORNL and BOR-60 in Russia, respectively. Following neutron irradiation, 10keV He ion implantation was performed on both samples to a fluence of 7×1014 He/cm2. Thermal desorption spectrometry (TDS) was conducted to obtain the helium desorption spectra. The comparison of He desorption spectra between unirradiated and neutron irradiated samples showed that the major He desorption peaks shift to higher temperatures for the neutron-irradiated iron samples, implying that strong trapping sites for He were produced during the irradiation, which appeared to be voids through TEM examination. The underlying mechanisms controlling the helium desorption behaviors could be revealed by the detailed microstructure characterization before and after TDS runs.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)