Nickel aluminide-copper backing for butt joint welding

Book · Mon Dec 30 23:00:00 EST 1996

OSTI ID:442955

Raghavan, S; Muszynski, M; Chin, B A ^[1]; Nagarajan, S ^[2]

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1. Auburn Univ., AL (United States)
2. Hobart Brothers Inc., Troy, OH (United States)

Single-side full penetration welding is the primary welding process in shipbuilding. This process requires the use of a backing to support the molten metal. Conventionally, copper has been used as the backing material in the shop and ceramic tiles for jobs on the field. However, copper has shown to contaminate the weld and produce adverse effects and ceramics have shown to produce porosities in the weld. A new backing with an intermetallic layer (NiAl) on the copper surface has been fabricated. The results indicate that this backing could alleviate the contamination problems and produce quality welds.

• OSTI ID: 442955
• Report Number(s): CONF-950682--; ISBN 0-87170-567-2
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
COPPER
EXPERIMENTAL DATA
GAS METAL-ARC WELDING
LIQUID METALS
LOW ALLOY STEELS
METALLOGRAPHY
MICROHARDNESS
NICKEL ALLOYS
SHIPS
SURFACE COATING
WELDABILITY