Abstract
An early stage of tensile behavior of Ni crystal containing a small amount of hydrogen was simulated by means of molecular dynamics. The total number of Ni atoms was 1800 and hydrogen atoms were located at the tetrahedral site (T-site) as well as the octahedral one (O-site) in the unit lattice. It is found that hydrogen at the T-site migrates to the O-site at an early stage of tensile test and the presence of hydrogen in the system enhances the crystal slip at a lower strain. Total number of hydrogen atoms and their location in the system also influence to the slip.
