Microstructural characteristics of Alloy 690TT subjected to fretting corrosion in high temperature water

Long Xin; Beibei Yang; Jie Li; Yonghao Lu; Tetsuo Shoji

doi:10.1016/j.corsci.2017.04.009

Microstructural characteristics of Alloy 690TT subjected to fretting corrosion in high temperature water

Long Xin, Beibei Yang, Jie Li, Yonghao Lu, Tetsuo Shoji

未来科学技術共同研究センター

研究成果: Article › 査読

26 被引用数 (Scopus)

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Microstructural characteristics of Alloy 690TT subjected to fretting corrosion in high temperature water were investigated. The results indicated that there were oxide, tribologically transformed structure (TTS) and deformation layers in worn subsurface. Oxide layer had a multilayered structure: the outer part consisted of Fe-rich spinel oxides and tribolayer which was composed of Fe₃O₄ and Cr₂O₃; the inner part contained local amorphous Cr-rich oxides. TTS layer consisted of equiaxed nanograins which formed due to dynamic recrystallization of deformed structure. Internal oxidation occurred within TTS layer because the nanograins provided the short-circuits for oxygen diffusion, resulting in the ellipsoid and stripe-like Cr₂O₃.

本文言語	English
ページ（範囲）	116-128
ページ数	13
ジャーナル	Corrosion Science
巻	123
DOI	https://doi.org/10.1016/j.corsci.2017.04.009
出版ステータス	Published - 2017 7月 15

ASJC Scopus subject areas

化学 (全般)
化学工学（全般）
材料科学（全般）

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10.1016/j.corsci.2017.04.009

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title = "Microstructural characteristics of Alloy 690TT subjected to fretting corrosion in high temperature water",

abstract = "Microstructural characteristics of Alloy 690TT subjected to fretting corrosion in high temperature water were investigated. The results indicated that there were oxide, tribologically transformed structure (TTS) and deformation layers in worn subsurface. Oxide layer had a multilayered structure: the outer part consisted of Fe-rich spinel oxides and tribolayer which was composed of Fe3O4 and Cr2O3; the inner part contained local amorphous Cr-rich oxides. TTS layer consisted of equiaxed nanograins which formed due to dynamic recrystallization of deformed structure. Internal oxidation occurred within TTS layer because the nanograins provided the short-circuits for oxygen diffusion, resulting in the ellipsoid and stripe-like Cr2O3.",

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author = "Long Xin and Beibei Yang and Jie Li and Yonghao Lu and Tetsuo Shoji",

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T1 - Microstructural characteristics of Alloy 690TT subjected to fretting corrosion in high temperature water

AU - Xin, Long

AU - Yang, Beibei

AU - Li, Jie

AU - Lu, Yonghao

AU - Shoji, Tetsuo

PY - 2017/7/15

Y1 - 2017/7/15

N2 - Microstructural characteristics of Alloy 690TT subjected to fretting corrosion in high temperature water were investigated. The results indicated that there were oxide, tribologically transformed structure (TTS) and deformation layers in worn subsurface. Oxide layer had a multilayered structure: the outer part consisted of Fe-rich spinel oxides and tribolayer which was composed of Fe3O4 and Cr2O3; the inner part contained local amorphous Cr-rich oxides. TTS layer consisted of equiaxed nanograins which formed due to dynamic recrystallization of deformed structure. Internal oxidation occurred within TTS layer because the nanograins provided the short-circuits for oxygen diffusion, resulting in the ellipsoid and stripe-like Cr2O3.

AB - Microstructural characteristics of Alloy 690TT subjected to fretting corrosion in high temperature water were investigated. The results indicated that there were oxide, tribologically transformed structure (TTS) and deformation layers in worn subsurface. Oxide layer had a multilayered structure: the outer part consisted of Fe-rich spinel oxides and tribolayer which was composed of Fe3O4 and Cr2O3; the inner part contained local amorphous Cr-rich oxides. TTS layer consisted of equiaxed nanograins which formed due to dynamic recrystallization of deformed structure. Internal oxidation occurred within TTS layer because the nanograins provided the short-circuits for oxygen diffusion, resulting in the ellipsoid and stripe-like Cr2O3.

KW - Alloy

KW - Fretting corrosion

KW - Microstructure

KW - Oxidation

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Microstructural characteristics of Alloy 690TT subjected to fretting corrosion in high temperature water

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