Dynamic Fracture Toughness and Charpy Transition Properties of a Service-Exposed 2.25Cr-1Mo Reheater Header Pipe

[+] Author and Article Information
P. R. Sreenivasan, C. G. Shastry, M. D. Mathew, K. Bhanu Sankara Rao, S. L. Mannan

Materials Development Group, Indira Gandhi Center for Atomic Research, Kalpakkam-603 102, India

G. Bandyopadhyay

R&D Centre, NTPC, Noida-201301 (U.P.), India

J. Eng. Mater. Technol 125(2), 227-233 (Apr 04, 2003) (7 pages) doi:10.1115/1.1543969 History: Received September 17, 2001; Revised June 12, 2002; Online April 04, 2003
Copyright © 2003 by ASME
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Charpy transition curve for service-exposed 2.25Cr-1Mo steel
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Load-temperature diagram for service exposed 2.25Cr-1Mo steel from instrumented impact test
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Comparison of measured PSF (ASTM E23) with estimated PSF from empirical formulas using load data from instrumented impact test
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Measured PSF (ASTM E23) and calculated PSF3 plotted against test temperature
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Variation of estimated lower-bound KId with test temperature
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FATT based 99 percent confidence Master Curve compared with estimated lower-bound KId
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Typical load-time (P-t) traces from instrumented Charpy impact tests (PGY,Pmax,PF above are referred to as Pgy,Pm, and Pf, respectively, in the text)




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