SYMPOSIA PAPER Published: 01 January 1991
STP16857S

Key-Curve Analysis of Linde 80 Welds

Source

Some reactor vessel weldments have relatively high copper contents that, when exposed to neutron irradiation, cause reductions in fracture toughness in the Charpy upper-shelf energy temperature region. To address this concern, a large number of both unirradiated and irradiated compact specimens were tested and the resulting J-resistance curves were generated. Key curves were developed from the load displacement records of single-specimen unloading compliance test data for magnesium-molybdenum-nickel/Linde 80 submerged-arc weld metals to study various aspects of toughness data behavior. In this paper, only a number of representative compact specimen tests are analyzed using the Herrera and Landes individual specimen key-curve approach to compare specimen size, temperature, and irradiation effects as part of a J-resistance model development effort for the Linde 80 class of weld metals.

The results of this study indicate (1) that the key-curve method works when applied to the Linde 80 type weld metals, (2) that a power law representation of the key curve provides a means to extract the Ramberg-Osgood exponent from the key curve if there are no available tensile data for the weld metal, and (3) that the irradiated specimens from both power reactors and a test reactor do not exhibit significant differences in comparable key-curve characteristics.

Author Information

Yoon, KK
B&W Nuclear Service Company, Lynchburg, VA
Van Der Sluys, WA
Alliance Research Center, Babcock & Wilcox, Alliance, OH
Lowe, AL
B&W Nuclear Service Company, Lynchburg, VA
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: E08
Pages: 225–237
DOI: 10.1520/STP16857S
ISBN-EB: 978-0-8031-5172-7
ISBN-13: 978-0-8031-1418-0