Effect of Ultrasonic Vibration on Unmixed Zone Formation

Journal Article · Sat Dec 31 23:00:00 EST 2005 · Scripta Materialia

DOI:https://doi.org/10.1016/j.scriptamat.2006.08.035· OSTI ID:1003396

Cui, Yan ^[1]; Xu, Cailu ^[1]; Han, Qingyou ^[1]

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1. ORNL

Ultrasonic vibration was introduced into the molten super-austenitic-stainless weld metal during the shielded metal arc welding process. It was observed that the unmixed zone in the weld metal was completely eliminated by high-intensity ultrasonic vibrations. This is mainly due to a complete mixing of the molten filler metal and base metal, at the freezing front, caused by the acoustically induced cavitation and streaming. The elimination of the unmixed zone can significantly enhance the corrosion resistance of the weldment because the unmixed zone is the preferential location for the corrosion attack.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: EE USDOE - Office of Energy Efficiency and Renewable Energy (EE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1003396
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 11 Vol. 55; ISSN 1359-6462
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CAVITATION
CORROSION
CORROSION RESISTANCE
FILLER METALS
FREEZING
SHIELDED METAL-ARC WELDING
ULTRASONIC WAVES