Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Effect of Interaction Between Dislocation and Nitrides on High Temperature Deformation Behavior of12%Cr-15%Mn Austenitic Steels

전위와 질화물의 상호작용이 12%Cr-15%Mn 오스테나이트강의 고온변형거동에 미치는 영향

  • Published : 2001.08.01
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Abstract

The objective of research is to clarify the interaction between dislocations and precipitates during high temperature creep deformation behaviors of high n austenitic steels. After measuring the internal stress in minimum creep rate state under applied stress of 236MPa at 873K, a transmission electron microscope (TEM) observation was performed to investigate the interaction between dislocations and precipitates during high temperature creep deformation. The band widths and values of internal stress increased when the nitride precipitates distribute more densely. Fine nitrides disturbed the dislocation movement with pinning the dislocations and perfect dislocations were separated into Shockley partial dislocations by fine nitrides. Coarse nitrides disturbed the dislocation movement with climb mechanism.

Keywords

References

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