Effect of Cr2N Precipitation on Deformed Microstructure in High Nitrogen Austenitic Stainless Steel

Tae Ho Lee; Sung Tae  Kim; Hae Jung Bang; Chang Seok Oh; Sung Joon Kim; Setsuo Takaki

doi:10.4028/www.scientific.net/KEM.345-346.161

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 345-346Effect of Cr2N Precipitation on Deformed...

Effect of Cr₂N Precipitation on Deformed Microstructure in High Nitrogen Austenitic Stainless Steel

Abstract:

The effect of Cr2N precipitation on deformed microstructure in high nitrogen austenitic Fe-18Cr-18Mn-2Mo-0.9N steel was investigated with a particular emphasis on deformation twinning. Based on the crystallographic analysis in the stereographic projection, the orientation relationship between austenite (γ) matrix and Cr2N was determined to be Cr2N [110]γ //[1100] and Cr2N (111) γ //(0001) . The deformation twinning had {111} < 112 > crystallographic component similar to that of cellular Cr2N. The cellular Cr2N precipitates caused a different orientation dependence of deformation twinning: only one twinning system in the <111 > grain was activated almost parallel to the growth direction of Cr2N.

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Periodical:

Key Engineering Materials (Volumes 345-346)

Pages:

161-164

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.345-346.161

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Online since:

August 2007

Authors:

Tae Ho Lee, Sung Tae Kim, Hae Jung Bang, Chang Seok Oh, Sung Joon Kim, Setsuo Takaki

Keywords:

Twinning, Cr₂N, Deformation, High Nitrogen Steel (HNS)

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