Weld solidification cracking in cast Ni[sub 3]Al alloys
Journal Article
·
· Scripta Metallurgica et Materialia; (United States)
- Oak Ridge National Lab., TN (United States)
Most of the cast Ni[sub 3]Al alloys currently under study have marginal resistance to solidification cracking, and therefore, they have poor weldability. Crack-free welds can be made on the alloys only with difficulty, and with poor reproducibility. Based on metallographic analysis of solidification cracks in welds of one such alloy, identified as IC221M, modest composition modifications were made to the base alloy to improve solidification-cracking resistance. The tensile properties and fabricability of the modified alloy, IC221W to denote improved weldability, were evaluated and found to be comparable to those of the base alloy and used to weld plates of cast IC221M. A crack-free weldment was obtained, which had good tensile properties up to 900 C.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6472666
- Journal Information:
- Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 28:11; ISSN SCRMEX; ISSN 0956-716X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
CRACK PROPAGATION
DATA
EXPERIMENTAL DATA
FABRICATION
FILLER METALS
HEAT AFFECTED ZONE
INFORMATION
INTERMETALLIC COMPOUNDS
JOINING
JOINTS
MECHANICAL PROPERTIES
NICKEL ALLOYS
NUMERICAL DATA
PHASE TRANSFORMATIONS
SOLIDIFICATION
STRESSES
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
TENSILE PROPERTIES
THERMAL STRESSES
WELDABILITY
WELDED JOINTS
WELDING
ZONES
360101* -- Metals & Alloys-- Preparation & Fabrication
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
CRACK PROPAGATION
DATA
EXPERIMENTAL DATA
FABRICATION
FILLER METALS
HEAT AFFECTED ZONE
INFORMATION
INTERMETALLIC COMPOUNDS
JOINING
JOINTS
MECHANICAL PROPERTIES
NICKEL ALLOYS
NUMERICAL DATA
PHASE TRANSFORMATIONS
SOLIDIFICATION
STRESSES
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
TENSILE PROPERTIES
THERMAL STRESSES
WELDABILITY
WELDED JOINTS
WELDING
ZONES