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- W304398244 abstract "A statistically designed, full-scale, weldment test series has been employed to appraise the possible influence of weld production irregularities on the cracking tendency of a gas-tungsten arc/cold wire feed weld between HP 9-4-20 steel and 21-6-9 stainless steel. Optical light microscopy, scanning electron microscopy, and Auger electron spectroscopy were utilized to characterize the metallurgical nature of weld cracking. The HP 9-4-20 filler material was found to be the most important production variable. Weld cracking was contingent on a particular heat of weld wire. The 21-6-9 material is apparantly a prerequisite for the cracking process. Weld wire and weld metal chemical analysis affords no clarification of the cracking problem. Fractographic evidence suggests liquation as the most plausible cause of weld cracking. Enrichment of boron, nitrogen, and sulfur along weld cracks was detected by Auger electron spectroscopy. Data gained from an investigation of Auger free-surface segregation shows that the potential for boron and nitrogen enrichment is greater in the crack-susceptible weld metal. The full implications of the Auger observations with regards to weld cracking are presently unknown." @default.
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- W304398244 date "1986-04-04" @default.
- W304398244 modified "2023-09-27" @default.
- W304398244 title "Examination of weld hot cracking in a transition joint between HP 9-4-20 steel and 21-6-9 stainless steel" @default.
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