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Atomistic study of hydrogen distributions around lattice defects and defect energies under hydrogen environment
Last modified: 2013-05-07
Abstract
It is well known that hydrogen atoms and lattice defects have strong interactions
and mechanical properties of metals are significantly changed under hydrogen
environment. It has been reported that hydrogen stabilizes vacancies [1, 2], and
changes the mobility of dislocations [3-5]. Furthermore, the hydrogen distribution
is strongly influenced by the stress fields [3-6]. In order to advance our
understanding about hydrogen related fractures of metals, it is essentially
important to reveal the hydrogen distributions around various lattice defects and
the hydrogen effects on defect-formation and defect-motion.
and mechanical properties of metals are significantly changed under hydrogen
environment. It has been reported that hydrogen stabilizes vacancies [1, 2], and
changes the mobility of dislocations [3-5]. Furthermore, the hydrogen distribution
is strongly influenced by the stress fields [3-6]. In order to advance our
understanding about hydrogen related fractures of metals, it is essentially
important to reveal the hydrogen distributions around various lattice defects and
the hydrogen effects on defect-formation and defect-motion.
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