Creep strengthening by lath boundaries in 9Cr ferritic heat-resistant steel

被引：37
|
作者：
Mitsuhara, Masatoshi [1 ]
Yamasaki, Shigeto [1 ]
Miake, Masaki [2 ]
Nakashima, Hideharu [1 ]
Nishida, Minoru [1 ]
Kusumoto, Junichi [3 ]
Kanaya, Akihiro [4 ]
机构：
[1] Kyushu Univ, Dept Engn Sci Elect & Mat, Fukuoka, Japan
[2] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, Fukuoka 812, Japan
[3] Kyushu Elect Power Co Inc, Res Inst, Div Engn, Fukuoka, Japan
[4] Fukuoka Clean Energy Co Inc, Dept Engn, Fukuoka, Japan
来源：
PHILOSOPHICAL MAGAZINE LETTERS | 2016年 / 96卷 / 02期
基金：
日本学术振兴会;
关键词：
in situ electron microscopy; dislocations; heat-resistant steel; transmission electron microscopy; creep; martensites; MARTENSITE; STABILITY; BEHAVIOR;
D O I：
10.1080/09500839.2016.1154200
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The interactions between dislocations and lath boundaries in Grade 91 steel were observed by an in situ transmission electron microscopy tensile test at 973K. Dislocations glided slowly and bowed out in a martensite lath interior. The ends of the dislocation were connected to the lath boundaries. In a tempered specimen, the pinning stress caused by the lath boundary was estimated to be>70MPa with a lath width of 0.4 mu m. In crept specimens, lath coarsening reduced the pinning effect.
引用
收藏
页码：76 / 83
页数：8
相关论文
共 50 条
  • [41] Creep lifetime prediction of 9% Cr martensitic heat-resistant steel based on ensemble learning method
    Tan, Yumeng
    Wang, Xiaowei
    Kang, Zitong
    Ye, Fei
    Chen, Yefeng
    Zhou, Dewen
    Zhang, Xiancheng
    Gong, Jianming
    Journal of Materials Research and Technology, 2022, 21 : 4745 - 4760
  • [42] Creep degradation assessment in 9%Cr heat-resistant steel welded joints using ultrasonic methods
    Wang, Xiao
    Wang, Xue
    Luo, Bin
    Hu, Xian-long
    Yuan, Ting-bi
    RESULTS IN PHYSICS, 2019, 12 : 307 - 320
  • [43] Microstructure and mechanical properties of 9Cr martensitic heat-resistant steel fabricated by wire and arc additive manufacture technology
    Gao, Chuang
    Chen, Xizhang
    Su, Chuanchu
    Singh, R. Arvind
    Jayalakshmi, S.
    MATERIALS EXPRESS, 2019, 9 (02) : 179 - 184
  • [44] Corrosion behavior of 9Cr heat-resistant steel deposited metal with different Si contents in lead-bismuth
    Liu C.
    Wei S.
    Wu D.
    Lu S.
    Hanjie Xuebao/Transactions of the China Welding Institution, 2023, 44 (08): : 98 - 103
  • [45] Effect of 6-ferrite on the corrosion resistance of the 9Cr high nitrogen heat-resistant martensitic-steel
    Liang, Liang
    Sun, Deshan
    Ning, Baoqun
    Chen, Yulin
    Dong, Zhizhong
    MATERIALS LETTERS, 2022, 322
  • [46] Creep Property of Boron Added 9Cr Heat Resistant Steels after Welding
    Matsunaga, Tetsuya
    Souissi, Maaouia
    Sahara, Ryoji
    Hongo, Hiromichi
    Tabuchi, Masaaki
    Zhang, Wei
    Mills, Michael J.
    THERMEC 2018: 10TH INTERNATIONAL CONFERENCE ON PROCESSING AND MANUFACTURING OF ADVANCED MATERIALS, 2018, 941 : 340 - 345
  • [47] Microstructure Evolution and Pinning of Boundaries by Precipitates in a 9 pct Cr Heat Resistant Steel During Creep
    Valeriy Dudko
    Andrey Belyakov
    Dmitri Molodov
    Rustam Kaibyshev
    Metallurgical and Materials Transactions A, 2013, 44 : 162 - 172
  • [48] Microstructure Evolution and Pinning of Boundaries by Precipitates in a 9 pct Cr Heat Resistant Steel During Creep
    Dudko, Valeriy
    Belyakov, Andrey
    Molodov, Dmitri
    Kaibyshev, Rustam
    METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2013, 44A : 162 - 172
  • [49] Changes in anodic polarization behavior of 12%Cr ferritic heat-resistant steels due to creep
    Abe Y.
    Komazaki S.-I.
    Mitsueda T.
    Zairyo/Journal of the Society of Materials Science, Japan, 2011, 60 (02) : 124 - 130
  • [50] Martensite-austenite transformation kinetics of high Cr ferritic heat-resistant steel
    Ma, Qiujia
    Shao, Yi
    Liu, Yongchang
    Gao, Zhiming
    Yu, Liming
    INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, 2013, 104 (10) : 935 - 940
12345