CORROSION RESISTANT ALLOY WELDMENTS IN CARBON STEEL STRUCTURES AND PIPELINES TO ACCOMMODATE HIGH AXIAL PLASTIC STRAINS

A method and apparatus for joining materials having primarily ferritic pr operties is described. The method includes joining the ferritic materials us ing a welding process and a weld material having a primarily austenitic micr ostructure. The resulting weldment enhances the properties of yield rati...

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Bibliographische Detailangaben
Hauptverfasser:	LEBLEU, JAMES B., JR, BEESON, DANNY L
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ALLOYS CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MACHINE TOOLS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A method and apparatus for joining materials having primarily ferritic pr operties is described. The method includes joining the ferritic materials us ing a welding process and a weld material having a primarily austenitic micr ostructure. The resulting weldment enhances the properties of yield ratio, u niform elongation, toughness and tearing resistance thereby producing superi or strain capacity. High strain capacity produces a structure that accommoda tes high axial loading. The weldment can also accommodate larger than conven tional weld flaws while maintaining sufficient strength, tearing resistance, and fracture toughness under high axial loading.