Creep Fracture Mechanism Map and Creep Damage of Cr-Mo-V Turbine Rotor Steel

この論文にアクセスする

この論文をさがす

著者

    • SHINYA Norio
    • Materials Engineering Laboratory, National Institute for Materials Science
    • KYONO Junro
    • Materials Engineering Laboratory, National Institute for Materials Science
    • KUSHIMA Hideaki
    • Materials Information Technology Station, National Institute for Materials Science

抄録

Specimens of a Cr–M–V rotor steel with creep rupture lives of up to 100000 h were examined metallographically to clarify their creep fracture mechanisms and to construct creep fracture mechanism maps showing the dominant regions of each mechanism. The creep fracture mechanism maps were constructed with stress on the <i>y</i>-axis and time to rupture on the <i>x</i>-axis, and also with stress on the <i>y</i>-axis and testing temperature on the <i>x</i>-axis. The maps included three different creep fracture mechanism fields: transgranular creep fracture, intergranular creep fracture with cavitation, and rupture with dynamic recrystallization. The maps indicate that the steel in the service of power plants is being used under conditions within the field of intergranular creep fracture with cavitation. This means that long term use of this steel under the conditions could cause extensive cavitation and low ductility fracture due to the cavitation.

収録刊行物

  • ISIJ international  

    ISIJ international 46(10), 1516-1522, 2006-10-15 

    The Iron and Steel Institute of Japan

参考文献:  20件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

ページトップへ