A new approach to improve the properties of brazed joints
Composite brazing filler metals improve mechanical properties of brazed joints. Application of a new, parallel-wire reinforcement, along with an appropriate working procedure, in the brazing of metallic materials offers solutions to several problems related to brazed joints. All reactions between constituents of the brazed joint are noteworthy. Joining of the reinforcement to the base metal without a brazing filler metal at the contact face between the reinforcement and the base metal is required. In this case, the reinforcement has a decisive influence on tensile strength, toughness and resistance to crack propagation in the reinforced brazed joint since the reinforcement is situated in the brazed-joint plane. Coalescence of the reinforcement with the base metal may be obtained in two ways, i.e., in some cases by diffusion brazing if the combination of the brazing filler metal, the base metal and the reinforcement permits, and in other cases by diffusion welding of the base metal and the reinforcement, in the latter case, the brazing filler metal is inert as far as the reinforcement and the base metal are concerned. In both cases, application of compressive force is required to permit coalescence of the reinforcement wire with the base metal over a large area.
- Research Organization:
- Welding Inst., Ljubljana (SI)
- OSTI ID:
- 20014311
- Journal Information:
- Welding Journal (Miami), Vol. 79, Issue 1; Other Information: PBD: Jan 2000; ISSN 0043-2296
- Country of Publication:
- United States
- Language:
- English
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