Evaluation of 3Cr-1. 5Mo steels in a simulated coal conversion environment
Technical Report
·
OSTI ID:6561713
Purpose of this study was to evaluate two 3Cr-1.5Mo steels in a simulated coal gasification environment (H/sub 2/ + 1% H/sub 2/S, 900 psig (6.3 MPa), 600/sup 0/F (316/sup 0/C)) and also at room temperature after exposure to this environment. A commercial heat of 2.25Cr-1Mo steel was also tested for comparison. The test techniques included fracture mechanics tests (J/sub Ic/), tensile tests and Charpy impact tests. The 3Cr-1.5Mo-V steel was tempered to three strength levels for the study. The 3Cr-1.5Mo-Ni steel was a weldment and tests were carried out on the base metal, the weld metal and the heat affected zone. Results showed that overall the 2.25Cr-1Mo steel and the low strength 3Cr-1.5Mo-V steel were superior. The high strength 3Cr-1.5Mo-V steel exhibited low resistance to tearing fracture (tearing modulus T approx. 0) at room temperature after temper embrittlement and after exposure to the environment.
- Research Organization:
- Westinghouse Research and Development Center, Pittsburgh, PA (USA); Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6561713
- Report Number(s):
- ORNL/SUB-83-47977/01; ON: DE87010223
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010404 -- Coal
Lignite
& Peat-- Gasification
36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CHALCOGENIDES
CHARPY TEST
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
COAL GASIFICATION PLANTS
CONTAINERS
DESTRUCTIVE TESTING
ELEMENTS
FRACTURE MECHANICS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IMPACT TESTS
INDUSTRIAL PLANTS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
MECHANICS
NONMETALS
PRESSURE VESSELS
STEELS
SULFIDES
SULFUR COMPOUNDS
TENSILE PROPERTIES
TESTING
VANADIUM ADDITIONS
VANADIUM ALLOYS
010404 -- Coal
Lignite
& Peat-- Gasification
36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CHALCOGENIDES
CHARPY TEST
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
COAL GASIFICATION PLANTS
CONTAINERS
DESTRUCTIVE TESTING
ELEMENTS
FRACTURE MECHANICS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IMPACT TESTS
INDUSTRIAL PLANTS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
MECHANICS
NONMETALS
PRESSURE VESSELS
STEELS
SULFIDES
SULFUR COMPOUNDS
TENSILE PROPERTIES
TESTING
VANADIUM ADDITIONS
VANADIUM ALLOYS