Title of article
Investigation on influence of dynamic strain ageing on fatigue crack growth behaviour of modified 9Cr–1Mo steel
Author/Authors
M. Nani Babu، نويسنده , , G. Sasikala، نويسنده , , B. Shashank Dutt، نويسنده , , S. Venugopal، نويسنده , , S.K. Albert، نويسنده , , A.K. Bhaduri and S.K. Ray، نويسنده , , T. Jayakumar، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2012
Pages
4
From page
242
To page
245
Abstract
Fatigue crack growth behaviour of modified 9Cr–1Mo steel is examined in the temperature range 300–823 K. An improvement in fatigue crack growth resistance is observed in the dynamic strain ageing regime. The activation energy for the process leading to this is estimated from the temperature-dependence of crack tip strain rate as 55–80 kJ/mole. This indicates that dynamic strain ageing due to interaction of dislocations with interstitial solute elements is responsible for the improved fatigue resistance in this range.
Keywords
Ferritic steel , Fatigue crack growth , Interstitial diffusion , Dynamic strain ageing , Work hardening
Journal title
INTERNATIONAL JOURNAL OF FATIGUE
Serial Year
2012
Journal title
INTERNATIONAL JOURNAL OF FATIGUE
Record number
1162557
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