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

被引：0
|
作者：
Mayu Muramatsu
Takayuki Suzuki
Yuji Nakasone
机构：
[1] National Institute of Advanced Industrial Science and Technology,Advanced Manufacturing Research Institute
[2] Tokyo University of Science,Faculty of Engineering
来源：
Journal of Mechanical Science and Technology | 2015年 / 29卷
关键词：
Creep-fatigue property; Electron backscatter diffraction; High temperature; Modified 9Cr-1Mo steel; Transmission electron microscopy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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.
引用
收藏
页码：121 / 129
页数：8
相关论文
共 50 条
  • [31] Magnetic evaluation of creep in modified 9Cr-1Mo steel
    Mitra, A.
    Mohapatra, J. N.
    Swaminathan, J.
    Ghosh, M.
    Panda, A. K.
    Ghosh, R. N.
    SCRIPTA MATERIALIA, 2007, 57 (09) : 813 - 816
  • [32] Accuracy and margin in creep-fatigue evaluation for modified 9Cr-1 Mo steel
    Takahashi, Yukio
    PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE 2007, VOL 6: MATERIALS AND FABRICATION, 2007, : 439 - 447
  • [33] Creep deformation mechanisms in modified 9Cr-1Mo steel
    Shrestha, Triratna
    Basirat, Mehdi
    Charit, Indrajit
    Potirniche, Gabriel P.
    Rink, Karl K.
    Sahaym, Uttara
    JOURNAL OF NUCLEAR MATERIALS, 2012, 423 (1-3) : 110 - 119
  • [34] Creep-fatigue damage for a structure with dissimilar metal welds of modified 9Cr-1Mo steel and 316L stainless steel
    Lee, Hyeong-Yeon
    Lee, Se-Hwan
    Kim, Jong-Bum
    Lee, Jae-Han
    INTERNATIONAL JOURNAL OF FATIGUE, 2007, 29 (9-11) : 1868 - 1879
  • [35] Creep deformation in a modified 9Cr-1Mo steel -: θ projection approach to prediction of creep properties
    Eberle, N
    Jones, FL
    MATERIALS SCIENCE AND TECHNOLOGY, 2003, 19 (02) : 214 - 218
  • [36] Creep-fatigue fracture mechanism of modified 9Cr-1Mo steel and its evaluation by the damage model based on the overstress concept
    Yaguchi, Masatsugu
    Ishikawa, Akiyoshi
    Asada, Yasuhide
    Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, 1995, 61 (590): : 2160 - 2167
  • [37] Microstructure and tensile properties of modified 9Cr-1Mo steel (grade 91)
    Chandravathi, KS
    Laha, K
    Rao, KBS
    Mannan, SL
    MATERIALS SCIENCE AND TECHNOLOGY, 2001, 17 (05) : 559 - 565
  • [38] Artificial neural network approach to low cycle fatigue and creep-fatigue interaction life prediction of modified 9Cr-1Mo ferritic steel
    Srinivasan, VS
    Nagesha, A
    Valsan, M
    Rao, KBS
    Mannan, SL
    Raj, B
    TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 2005, 58 (2-3) : 261 - 267
  • [39] MICROSTRUCTURE EVOLUTION AND CREEP RUPTURE BEHAVIOR OF MODIFIED 9CR-1MO STEEL WELDED JOINT
    Ren, Facai
    Tang, Xiaoying
    Xu, Jinsha
    Si, Jun
    Yuan, Yiwen
    PROCEEDINGS OF THE ASME 2020 PRESSURE VESSELS & PIPING CONFERENCE (PVP2020), VOL 6, 2020,
  • [40] CREEP FRACTURE OF A 9CR-1MO STEEL
    BARKER, E
    LLOYD, GJ
    PILKINGTON, R
    MATERIALS SCIENCE AND ENGINEERING, 1986, 84 (1-2): : 49 - 64
12345