발간논문

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Vol.26, No.11, 1047 ~ 1058, 1988
Title
Slip Deformation Modes on ( 111 ) and ( 001 ) Planes of Fe - 3 % Si single Crystal by the irradiation of Nd : YAG Laser Pulse and Mechanical indentation
김도훈T . H . Kim, 신규식K . S . Sin, 신정철J . C . Shin
Abstract
In order to compare the slip deformation modes of Fe-3%Si singe crystals created by mechanical indentation and Nd : YAG laser pulse, they were indented with the Rockwell diamond brale and irradiated with the Nd : YAG laser pulse. The slip traces generated on (111) and (001) surface planes were analysed by trace analysis method. The microstructures in both deformed specimens were observed by Nomarski microscope and TEM. Mechanical indentation on (111) and (001) surface planes resulted that the slips had taken place on {110} and {112} planes along $lt;111$gt; direction. Meanwhile laser irradiation showed that the slips had also taken place on {123} planes in addition to {110} and {112} planes due to thermal effect. It seems that a strain rate had larger effect on the spacing of slip bands in Fe-3% Si single crystal compared with temperature increase. Dislocation density was higher in mechanically indented specimen and they were tangled each other. Mean while dislocation density was lower in laser irradiated specimen and the were aligned along the characteristic orientation.
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