Crystallography of ferrite-austenite phase transformation induced by nitrogen absorption in Fe-25Cr alloy

Y. Futamura, T. Ando, Toshihiro Tsuchiyma, Setsuo Takaki

Research output: Contribution to conferencePaperpeer-review

Abstract

The phase transformation from ferrite to austenite induced by solution nitriding was discussed in 25mass%Cr ferritic stainless steel on the basis of crystallographic analysis by EBSP method. In the early stage of solution nitriding, austenite grains containing approximately 1mass% nitrogen nucleated at the material surface, and then they gradually grew into the material with solution nitriding. EBSP measurement for the solution-nitrided specimens revealed that some austenite grains have the crystallographic orientations close to Kurdjumov-Sachs (K-S) relationship with the parent ferrite grain; however, there were a lot of austenite grains with no specific orientation relationship. This suggests that the crystallographic orientation of the product phase is not fixed only by that of the parent phase when it nucleates at specimen surface.

Original languageEnglish
Pages153-159
Number of pages7
Publication statusPublished - Dec 1 2005
EventInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005 - Phoenix, AZ, United States
Duration: May 29 2005Jun 3 2005

Other

OtherInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005
CountryUnited States
CityPhoenix, AZ
Period5/29/056/3/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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