The effect of iron dilution on strength of nickel/steel and Monel/steel welds
The weld strength, as a function of iron content, for nickel/steel and Monel/steel welds was determined. Samples were prepared using a Gas Metal Arc (GMAW) automatic process to weld steel plate together with nickel or Monel to produce a range of iron contents typical of weld compositions. Tensile specimens of each iron content were tested to obtain strength and ductility measurements for that weld composition. Data indicate that at iron contents of less than 20% iron in a nickel/steel weld, the weld fails at the weld interface, due to a lack of fusion. Between 20% and 35% iron, the highest iron dilution that could be achieved in a nickel weld, the welds were stronger than the steel base metal. This indicates that a minimum amount of iron dilution (20%) is necessary for good fusion and optimum strength. On the other hand for Monel/steel welds, test results showed that the welds had good strength and integrity between 10% and 27% iron in the weld. Above 35% iron, the welds have less strength and are more brittle. The 35% iron content also corresponds to the iron dilution in Monel welds that has been shown to produce an increase in corrosion rate. This indicates that the iron dilution in Monel welds should be kept below 35% iron to maximize both the strength and corrosion resistance. 2 refs., 6 figs., 3 tabs.
- Research Organization:
- Goodyear Atomic Corp., Piketon, OH (USA)
- DOE Contract Number:
- AC05-76OR00001
- OSTI ID:
- 6716449
- Report Number(s):
- GAT-T-3224; ON: DE89002407
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
IRON
METALLURGICAL EFFECTS
MONEL
WELDED JOINTS
NICKEL
STEELS
CORROSIVE EFFECTS
GAS METAL-ARC WELDING
PHASE DIAGRAMS
TENSILE PROPERTIES
ALLOYS
ARC WELDING
COPPER ALLOYS
DIAGRAMS
ELEMENTS
FABRICATION
IRON ALLOYS
IRON BASE ALLOYS
JOINING
JOINTS
MECHANICAL PROPERTIES
METALS
NICKEL ALLOYS
NICKEL BASE ALLOYS
TRANSITION ELEMENTS
WELDING
360101* - Metals & Alloys- Preparation & Fabrication
360103 - Metals & Alloys- Mechanical Properties
360102 - Metals & Alloys- Structure & Phase Studies