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

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

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.

Original language	English
Pages (from-to)	116-128
Number of pages	13
Journal	Corrosion Science
Volume	123
DOIs	https://doi.org/10.1016/j.corsci.2017.04.009
Publication status	Published - 2017 Jul 15

Keywords

Alloy
Fretting corrosion
Microstructure
Oxidation

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

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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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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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JO - Corrosion Science

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

Abstract

Keywords

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