Crack-arrest behavior in SEN (single-edge notch) wide plates of quenched and tempered A 533 grade B steel tested under nonisothermal conditions
The first series of six wide-plate crack-arrest tests (WP-1 Series) are discussed in this report. Each test utilized a 1-m x 1-m x 0.1-m-thick single-edge notch specimen (a/w = 0.2), fabricated from A533 grade B class 1 steel, that was subjected to a linear thermal gradient along the plane of crack propagation. The tests were conducted at the National Bureau of Standards (Gaithersburg) and were designed to provide fracture-toughness measurements at temperatures approaching or above the onset of the Charpy upper-shelf regime, in a rising toughness region and with an increasing driving force. Results from this series of tests produced crack-arrest toughness values well above the limit recognized by current ASME Code guidelines (220 MPa . ..sqrt..m) with arrest occurring at 52/sup 0/C to 115/sup 0/C above the material RT/sub NDT/ (-23/sup 0/C). The fracture data support: (1) the use of current LEFM concepts to analyze cleavage run-arrest events, (2) the treatment of cleavage run-arrest and ductile fracture modes as separate events, and (3) the fact that cleavage arrest occurs above the ASME limit. 115 figs., 20 tabs.
- Research Organization:
- Oak Ridge National Lab., TN (USA); Nuclear Regulatory Commission, Washington, DC (USA). Office of Nuclear Regulatory Research
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6122373
- Report Number(s):
- NUREG/CR-4930; ORNL-6388; ON: DE88001596
- Country of Publication:
- United States
- Language:
- English
Similar Records
High-temperature crack-arrest tests using 152-mm-thick SEN wide plates of low-upper-shelf base material: Tests WP-2. 2 and WP-2. 6
Crack-arrest behavior in SEN wide plates of low-upper-shelf base metal tested under nonisothermal conditions: WP-2 series
Related Subjects
36 MATERIALS SCIENCE
PRESSURE VESSELS
CRACKS
PWR TYPE REACTORS
STEEL-ASTM-A533-B
CRACK PROPAGATION
FRACTURE MECHANICS
CHARPY TEST
EXPERIMENTAL DATA
ALLOYS
CARBON STEELS
CONTAINERS
DATA
DESTRUCTIVE TESTING
IMPACT TESTS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL TESTS
MECHANICS
NUMERICAL DATA
REACTORS
STEELS
TESTING
WATER COOLED REACTORS
WATER MODERATED REACTORS
210200* - Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
360103 - Metals & Alloys- Mechanical Properties