TEM study on the order-disorder transition of Cr2N precipitates in high-nitrogen austenitic steel

Tae Ho Lee; Chang Seok Oh; Chang Gil Lee; Sung Joon Kim; Setsuo Takaki

TEM study on the order-disorder transition of Cr₂N precipitates in high-nitrogen austenitic steel

Tae Ho Lee, Chang Seok Oh, Chang Gil Lee, Sung Joon Kim, Setsuo Takaki

Materials Processing

Research output: Contribution to conference › Paper › peer-review

Abstract

The order-disorder transition (ODT) of Cr₂N precipitates in high-nitrogen austenitic steel was investigated utilizing transmission electron microscopy (TEM). Based on the analyses of selected area diffraction (SAD) patterns, the crystal structure of ordered Cr₂N was confirmed to be trigonal (P31m) characterized by three sets of superlattice reflections: (001), (1/3 1/3 0), and (1/3 1/3 1). During electron irradiation, the superlattice reflections gradually disappeared in regular sequence: (001), (1/3 1/3 0), and (1/3 1/3 1), indicating that the order-disorder transition of Cr₂N occurred.

Original language	English
Pages	243-248
Number of pages	6
Publication status	Published - Dec 1 2005
Event	International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005 - Phoenix, AZ, United States Duration: May 29 2005 → Jun 3 2005

Other

Other	International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005
Country	United States
City	Phoenix, AZ
Period	5/29/05 → 6/3/05

All Science Journal Classification (ASJC) codes

Engineering(all)

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TEM study on the order-disorder transition of Cr₂N precipitates in high-nitrogen austenitic steel. / Lee, Tae Ho; Oh, Chang Seok; Lee, Chang Gil; Kim, Sung Joon; Takaki, Setsuo.

2005. 243-248 Paper presented at International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005, Phoenix, AZ, United States.

Research output: Contribution to conference › Paper › peer-review

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title = "TEM study on the order-disorder transition of Cr2N precipitates in high-nitrogen austenitic steel",

abstract = "The order-disorder transition (ODT) of Cr2N precipitates in high-nitrogen austenitic steel was investigated utilizing transmission electron microscopy (TEM). Based on the analyses of selected area diffraction (SAD) patterns, the crystal structure of ordered Cr2N was confirmed to be trigonal (P31m) characterized by three sets of superlattice reflections: (001), (1/3 1/3 0), and (1/3 1/3 1). During electron irradiation, the superlattice reflections gradually disappeared in regular sequence: (001), (1/3 1/3 0), and (1/3 1/3 1), indicating that the order-disorder transition of Cr2N occurred.",

author = "Lee, {Tae Ho} and Oh, {Chang Seok} and Lee, {Chang Gil} and Kim, {Sung Joon} and Setsuo Takaki",

year = "2005",

month = dec,

day = "1",

language = "English",

pages = "243--248",

note = "International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005 ; Conference date: 29-05-2005 Through 03-06-2005",

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T1 - TEM study on the order-disorder transition of Cr2N precipitates in high-nitrogen austenitic steel

AU - Lee, Tae Ho

AU - Oh, Chang Seok

AU - Lee, Chang Gil

AU - Kim, Sung Joon

AU - Takaki, Setsuo

PY - 2005/12/1

Y1 - 2005/12/1

N2 - The order-disorder transition (ODT) of Cr2N precipitates in high-nitrogen austenitic steel was investigated utilizing transmission electron microscopy (TEM). Based on the analyses of selected area diffraction (SAD) patterns, the crystal structure of ordered Cr2N was confirmed to be trigonal (P31m) characterized by three sets of superlattice reflections: (001), (1/3 1/3 0), and (1/3 1/3 1). During electron irradiation, the superlattice reflections gradually disappeared in regular sequence: (001), (1/3 1/3 0), and (1/3 1/3 1), indicating that the order-disorder transition of Cr2N occurred.

AB - The order-disorder transition (ODT) of Cr2N precipitates in high-nitrogen austenitic steel was investigated utilizing transmission electron microscopy (TEM). Based on the analyses of selected area diffraction (SAD) patterns, the crystal structure of ordered Cr2N was confirmed to be trigonal (P31m) characterized by three sets of superlattice reflections: (001), (1/3 1/3 0), and (1/3 1/3 1). During electron irradiation, the superlattice reflections gradually disappeared in regular sequence: (001), (1/3 1/3 0), and (1/3 1/3 1), indicating that the order-disorder transition of Cr2N occurred.

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T2 - International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2005

Y2 - 29 May 2005 through 3 June 2005