SYMPOSIA PAPER Published: 01 January 1990
STP18998S

Analysis of Fracture Toughness Data for Modified SA508 Cl2 in the Ductile-to-Brittle Transition Region

Source

Fracture toughness testing of steels in the ductile-to-brittle transition region is complicated by a large amount of data scatter. There are many available methods of analyzing transition region toughness data with the objective of reducing the data scatter and arriving at a representative value for the lower bound toughness. Ten 1T and five 4T compact specimens of SA508 C12 pressure vessel steel given a special heat treatment were tested in the transition region, and the data were analyzed according to six of the available methods. Of three purely statistical methods, one based on a large collection of pressure vessel and rotor steel data is preferred. Of three analytical methods, one which subtracts the contributions of plasticity and crack growth from measured toughness is preferred.

Author Information

Miglin, MT
Babcock and Wilcox Company, Alliance Research Center, Alliance, OH
Wade, CS
Babcock and Wilcox Company, Alliance Research Center, Alliance, OH
Van Der Sluys, WA
Babcock and Wilcox Company, Alliance Research Center, Alliance, OH
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Details
Developed by Committee: E08
Pages: 238–263
DOI: 10.1520/STP18998S
ISBN-EB: 978-0-8031-5134-5
ISBN-13: 978-0-8031-1299-5