Welded component

Details Welded component Welded component

2007-11-20

2009-12-01

Stoner, Kiley (Department: 1793)

Metal fusion bonding

Process

Plural filler applying

C228S226000, C228S227000, C228S231000

Reexamination Certificate

active

07624909

ABSTRACT:
A welded component includes at least one high temperature segment of a high alloy Cr steel with high creep strength and a low temperature segment of a low alloy steel with high toughness and/or a high yield strength which are connected materially to one another via a weld joint. In one such component a gradual transition of chemical, physical and mechanical properties in the joining area is achieved in that between the weld joint and the high temperature segment there are at least two successive clad layers of at least two lower alloy weld metals with a total content of elements which increase the creep strength, such as for example Cr, Mo, W and V, which total content decreases toward the weld joint, and/or an increasing total content of elements which increase the toughness and/or yield strength, such as for example Ni and Mn, which total content increases toward the weld joint.

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