Cyclic fracture behaviour of 20MnMoNi55 steel at room and elevated temperatures

Chowdhury, T and Sivaprasad, S and Bar, H N and Tarafder, S and Bandyopadhyay, N R (2015) Cyclic fracture behaviour of 20MnMoNi55 steel at room and elevated temperatures. Fatigue & Fracture of Engineering Materials & Structures, 38 (IF-1.561). pp. 813-827.

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Cyclic fracture behaviour of 20MnMoNi55 steel has been evaluated at room temperature and elevated temperature of 300 degrees C. Fracture resistance at elevated temperature was found to be lower than that at room temperature. The deterioration in fracture resistance was due to dynamic strain ageing. Cyclic loading amplitude and frequency were also found to have an influence on fracture resistance. The features of the stretch zone during cyclic fracture were different from those at monotonic fracture. Stretch zone dimensions were found to be insensitive to cyclic load amplitudes whereas marginally affected by frequency of load cycles under dynamic strain ageing conditions.

Item Type:Article
Official URL/DOI:
Uncontrolled Keywords:cyclic fracture; R ratio; incremental plastic displacement; stretch zone width; elevated temperature
Divisions:Material Science and Technology
ID Code:7257
Deposited By:Sahu A K
Deposited On:07 Aug 2015 12:04
Last Modified:27 Aug 2015 10:07
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