NOREM wear-resistant, iron-based hard-facing alloys: Final report
Technical Report
·
OSTI ID:5983948
Wear-resistance cobalt-free hardfacing alloys are needed to replace the cobalt-base alloys used to hardface nuclear valves in order to reduce the exposure of maintenance personnel. Some thirty heats of cast iron-base alloys were prepared and characterized. Selected heats were prepared and applied as hardfacing overlays on austenitic steel substrates using both GTA and PTA welding processes. Some of the iron-base alloys exhibited galling wear resistance as high as that of cobalt-base standards both in the cast condition and in the PTA overlays. Hardness, mechanical properties, and galling wear resistance were determined on weld overlays and on cast alloys. Dilution and thermal expansivity were determined for weld overlays. X-ray diffraction and scanning electron microscopy were used to determine the alloys' microstructures. Other commercially available alloys were tested for galling wear resistance and compared to iron-base alloys. 7 refs., 2 figs., 2 tabs.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (USA); AMAX Research and Development Center, Golden, CO (USA)
- OSTI ID:
- 5983948
- Report Number(s):
- EPRI-NP-6466-M
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220200* -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360104 -- Metals & Alloys-- Physical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ARC WELDING
CARBIDES
CARBON COMPOUNDS
CASTING
CHROMIUM ALLOYS
COBALT ALLOYS
COBALT BASE ALLOYS
CONTROL EQUIPMENT
CRYSTAL STRUCTURE
DENSITY
DESTRUCTIVE TESTING
DOCUMENT TYPES
EQUIPMENT
FABRICATION
FLOW REGULATORS
GAS TUNGSTEN-ARC WELDING
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MAINTENANCE
MATERIALS TESTING
MECHANICAL PROPERTIES
MICROSTRUCTURE
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
PHYSICAL PROPERTIES
POWER PLANTS
PROGRESS REPORT
TESTING
THERMAL POWER PLANTS
VALVES
WEAR RESISTANCE
WELDABILITY
WELDING
220200* -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360104 -- Metals & Alloys-- Physical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ARC WELDING
CARBIDES
CARBON COMPOUNDS
CASTING
CHROMIUM ALLOYS
COBALT ALLOYS
COBALT BASE ALLOYS
CONTROL EQUIPMENT
CRYSTAL STRUCTURE
DENSITY
DESTRUCTIVE TESTING
DOCUMENT TYPES
EQUIPMENT
FABRICATION
FLOW REGULATORS
GAS TUNGSTEN-ARC WELDING
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MAINTENANCE
MATERIALS TESTING
MECHANICAL PROPERTIES
MICROSTRUCTURE
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
PHYSICAL PROPERTIES
POWER PLANTS
PROGRESS REPORT
TESTING
THERMAL POWER PLANTS
VALVES
WEAR RESISTANCE
WELDABILITY
WELDING