Tempering embrittlement of 2.25Cr-1Mo steel for, a long term of service

被引：0
|
作者：
Hua, L [1 ]
Xu, H [1 ]
Wang, ZW [1 ]
Wang, ZD [1 ]
机构：
[1] E China Univ Sci & Technol, Shanghai 200237, Peoples R China
来源：
ENVIRONMENT EFFECTS ON FRACTURE AND DAMAGE | 2004年
关键词：
tempering embrittlement; hydrogen induced cracking; impurity segregation; intergranular fracture;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The microstructures and mechanical properties are investigated in this paper for a hydrogenation reactor steel 2.25Cr-1Mo after long-term service. The material exposed at 427 degreesC for 10 years as a testing block in reactor vessel show appreciable temper embrittlement. The fracture toughness K(IC) at room temperature is lower because of tempering situation and hydrogen absorption. Coarse grain and impurity segregation at grain boundary are observed from micrography. The results show that fracture mode changes from quasi-cleavage to intergranular when temper embrittlement becomes more serious. It also shows that the ratio of intergranular fracture-to transgranular fracture will be bigger after cathodical hydrogen charging.
引用
收藏
页码：105 / 109
页数：5
相关论文
共 50 条
  • [41] Long term creep rupture properties and microstructural change in welds of 2.25Cr-1Mo steel thick plates
    Watanabe, T
    Yamazaki, M
    Hongo, H
    Tanabe, T
    PROGRESS IN MECHANICAL BEHAVIOUR OF MATERIALS (ICM8), VOL 2: MATERIAL PROPERTIES, 1999, : 658 - 663
  • [42] DEGRADATION OF MECHANICAL-PROPERTIES OF CR-MO-V AND 2.25CR-1MO STEEL-COMPONENTS AFTER LONG-TERM SERVICE AT ELEVATED-TEMPERATURES
    CHERUVU, NS
    METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1989, 20 (01): : 87 - 97
  • [43] Long term creep life prediction for grade 22 (2.25Cr-1Mo) steels
    Whittaker, M.T.
    Wilshire, B.
    Energy Materials: Materials Science and Engineering for Energy Systems, 2012, 6 (01): : 642 - 647
  • [44] Trace element embrittlement in a 2.25%Cr-1%Mo steel
    Pilkington, R
    Dicken, R
    Peura, P
    Lorimer, GW
    Allen, GC
    Holt, M
    Younes, CM
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1996, 212 (02): : 191 - 205
  • [45] Long term creep life prediction for Grade 22 (2.25Cr-1Mo) steels
    Whittaker, M. T.
    Wilshire, B.
    MATERIALS SCIENCE AND TECHNOLOGY, 2011, 27 (03) : 642 - 647
  • [46] Ductile-brittle transition of 2.25Cr-1Mo steel in service with different hydrogen contents
    Wang, Xiao-Xin
    Zhang, Zheng
    You, Yi-Liang
    Chang, Bo
    Li, Peng
    Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment, 2010, 31 (10): : 58 - 62
  • [47] Study on the mechanism of de-embrittlement based on the theory of grain boundary segregation for 2.25Cr-1Mo steel
    Zhang Xi-liang
    Zhou Chang-yu
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (13-14): : 4287 - 4291
  • [48] Effect of specimen size on hydrogen embrittlement cracking of 2.25Cr-1Mo heavy section steel for pressure vessels
    Wada, Yoru
    Tanaka, Yasuhiko
    Iwadate, Tadao
    Ohmi, Toshihito
    Yokobori, Toshimitsu
    JOURNAL OF THE JAPAN INSTITUTE OF METALS, 2007, 71 (09) : 772 - 780
  • [49] Study on further embrittlement mechanism in 2.25Cr-1Mo steel based on theory of equilibrium grain boundary segregation
    School of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing 210009, China
    Cailiao Rechuli Xuebao, 2009, 4 (194-197): : 194 - 197
  • [50] Grain boundary segregation of phosphorus and molybdenum in 2.25Cr-1Mo steel
    Ding, R.
    Knott, J.
    MATERIALS SCIENCE AND TECHNOLOGY, 2008, 24 (10) : 1189 - 1194
12345