Weldability of nickel aluminides

Conference · Sun Dec 31 23:00:00 EST 1989

OSTI ID:7011053

Goodwin, G M; David, S A

The weldability of nickel aluminides, in terms of resistance to hot cracking, is evaluated based on testing of thin sheet using the Sigmajig hot cracking test and simulated repair welding of 2.5 {times} 2.5 {times} 7.5 cm ingots. The thin sheet tests showed that certain alloy compositions have cracking resistance within the range of commercial type 316 stainless steel. The ingot tests showed that only a few compositions could be welded without cracking. It is hypothesized that oxygen plays a role in the operative hot cracking mechanism. Rolled and welded tubing has been produced successfully from some of these materials.

• Research Organization: Oak Ridge National Lab., TN (USA)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7011053
• Report Number(s): CONF-900774-1; ON: DE90008557
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360100* -- Metals & Alloys
360101 -- Metals & Alloys-- Preparation & Fabrication
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
AUSTENITIC STEELS
AVAILABILITY
BORON
CERIUM
CHROMIUM
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
CHROMIUM-NICKEL-MOLYBDENUM STEELS
CORROSION RESISTANT ALLOYS
CRACKS
CRYSTAL STRUCTURE
DUCTILITY
ELEMENTS
EROSION
FABRICATION
FRACTURE MECHANICS
FUNCTIONS
GRAIN BOUNDARIES
HEAT RESIS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MECHANICAL PROPERTIES
MECHANICS
METALLURGY
METALS
MICROSTRUCTURE
MODIFICATIONS
MOLYBDENUM
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NONMETALS
OPTIMIZATION
OXYGEN
PERFORMANCE TESTING
PHYSICAL PROPERTIES
RARE EARTHS
RECOMMENDATIONS
SEMIMETALS
STAINLESS STEEL-316
STAINLESS STEELS
STEEL-CR17NI12MO3
STEELS
STRENGTH FUNCTIONS
SURFACE PROPERTIES
TEMPERATURE GRADIENTS
TENSILE PROPERTIES
TESTING
TRANSITION ELEMENTS
TUBES
VANADIUM
WEAR
WELDING
YTTRIUM