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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Nuclear Technology
Fusion Science and Technology
July 2025
Latest News
Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
Pengbo Zhang, Ruihuan Li, Chong Zhang, Jijun Zhao
Fusion Science and Technology | Volume 66 | Number 1 | July-August 2014 | Pages 106-111
Technical Paper | doi.org/10.13182/FST13-746
Articles are hosted by Taylor and Francis Online.
The preferential site, segregation and embrittlement properties of hydrogen (H) in a vanadium (V) &Sgr;3 (111) [110] grain boundary (GB) were investigated by first-principles calculations. The solution and segregation energy of H at different interstitial and substitutional sites are calculated. Energetically, H prefers to occupy the GB space rather than substitutional sites and can segregate to the GB with segregation energy of −0.08 eV. Hydrogen is an embrittler at the GB by producing an embrittlement energy of about 0.41 eV, in agreement with experimental observations. Charge density distributions indicate that there are no strong chemical bonds between an H atom and the adjacent V atoms in the GB, and the presence of H atom weakens the bond strength between surrounding V atoms.
