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Cross-sectional transmission electron microscopy characterisation of plasma immersion ion implanted austenitic stainless steel

Journal Article


Abstract


  • Cross-sectional transmission electron microscopy (XTEM), selected area diffraction (SAD) and nano-beam diffraction (NBD) techniques were used to investigate the surface microstructure of 316 stainless steel, implanted with high doses of nitrogen ions at 150, 250, 350, 450 and 520°C using plasma immersion ion implantation, It has been found that the treatment temperature has a strong influence on the evolution of the microstructure. An amorphous layer of about 1 μm thick with a heavily stressed substrate underneath was observed on the 150°C implanted sample. Both the 250 and 350°C implanted samples showed a thin nanocrystalline sublayer at the outermost surface and an amorphous sublayer between the nanocrystalline sublayer and the substrate. A thick amorphous layer up to 3 μm thick was formed on the 450°C implanted sample whereas at 520°C, cellular precipitation of CrN and α-ferrite dominated the system. It is suggested that a solid state chemical reaction and the poor mobility of the reactant atoms are the key factors for the solid state amorphisation by nitrogen ion implantation into austenite.

Publication Date


  • 1996

Citation


  • Li, X., Samandi, M., Dunne, D., Collins, G., Tendys, J., Short, K., & Hutchings, R. (1996). Cross-sectional transmission electron microscopy characterisation of plasma immersion ion implanted austenitic stainless steel. Surface and Coatings Technology, 85(1-2), 28-36. doi:10.1016/0257-8972(96)02879-4

Scopus Eid


  • 2-s2.0-0030296120

Web Of Science Accession Number


Start Page


  • 28

End Page


  • 36

Volume


  • 85

Issue


  • 1-2

Abstract


  • Cross-sectional transmission electron microscopy (XTEM), selected area diffraction (SAD) and nano-beam diffraction (NBD) techniques were used to investigate the surface microstructure of 316 stainless steel, implanted with high doses of nitrogen ions at 150, 250, 350, 450 and 520°C using plasma immersion ion implantation, It has been found that the treatment temperature has a strong influence on the evolution of the microstructure. An amorphous layer of about 1 μm thick with a heavily stressed substrate underneath was observed on the 150°C implanted sample. Both the 250 and 350°C implanted samples showed a thin nanocrystalline sublayer at the outermost surface and an amorphous sublayer between the nanocrystalline sublayer and the substrate. A thick amorphous layer up to 3 μm thick was formed on the 450°C implanted sample whereas at 520°C, cellular precipitation of CrN and α-ferrite dominated the system. It is suggested that a solid state chemical reaction and the poor mobility of the reactant atoms are the key factors for the solid state amorphisation by nitrogen ion implantation into austenite.

Publication Date


  • 1996

Citation


  • Li, X., Samandi, M., Dunne, D., Collins, G., Tendys, J., Short, K., & Hutchings, R. (1996). Cross-sectional transmission electron microscopy characterisation of plasma immersion ion implanted austenitic stainless steel. Surface and Coatings Technology, 85(1-2), 28-36. doi:10.1016/0257-8972(96)02879-4

Scopus Eid


  • 2-s2.0-0030296120

Web Of Science Accession Number


Start Page


  • 28

End Page


  • 36

Volume


  • 85

Issue


  • 1-2