Effects of microstructure on material properties of modified 9Cr-1Mo steel subject to creep-fatigue

Mayu Muramatsu, Takayuki Suzuki, Yuji Nakasone

研究成果: Article

3 引用 (Scopus)

抄録

The creep-fatigue properties of modified 9Cr-1Mo steel were studied to elucidate the effects of the microstructure on specimens deformed by fatigue and creep-fatigue via stress holding for 30 min at 550°C. First, creep-fatigue behaviors up to 7.8% nominal strains were obtained with respect to the deformation conditions. Next, the micro Vickers hardness values were determined to measure the creep-fatigue properties of the deformed materials. Electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM) were used to determine the grain diameters and grain average misorientations (GAMs) and distributions of dislocations and precipitates, respectively. These observations explained the creep-fatigue properties of the deformed specimens. The differences in the properties of materials subjected to fatigue and creep-fatigue are discussed both macroscopically and microscopically.

元の言語English
ページ(範囲)121-129
ページ数9
ジャーナルJournal of Mechanical Science and Technology
29
発行部数1
DOI
出版物ステータスPublished - 2015 1 1
外部発表Yes

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Materials properties
Creep
Fatigue of materials
Microstructure
Steel
Vickers hardness
Electron diffraction
Precipitates
Transmission electron microscopy

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

これを引用

Effects of microstructure on material properties of modified 9Cr-1Mo steel subject to creep-fatigue. / Muramatsu, Mayu; Suzuki, Takayuki; Nakasone, Yuji.

:: Journal of Mechanical Science and Technology, 巻 29, 番号 1, 01.01.2015, p. 121-129.

研究成果: Article

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