The behavior of hydrogen (H) in metals has been a long- standing research topic in materials science. One of the most compelling subjects is the deleterious effects of H on the microstructural evolution of materials...
详细信息
The behavior of hydrogen (H) in metals has been a long- standing research topic in materials science. One of the most compelling subjects is the deleterious effects of H on the microstructural evolution of materials; these effects include H embrittlement, superabundant vacancy formation, and blistering. Vacancies have been demonstrated through both experiments and computational simulations to have strong H trapping effects [1], resulting in increased H retention [2], gas-filled bubble formation [3-5], and surface modification [6-9]. In addition, at high temperatures and high H pressures, superabundant vacancy formation induced by H is observed [ 10,11 ]. Unfortunately, even though substantial research has been conducted on the interplay between H and vacancies [12-14], the detailed processes by which H-vacancy com- plexes nucleate, grow, and agglomerate remain unclear. In these processes, the energetics and structures of H-vacancy clusters are undoubtedly important.
暂无评论