TY - JOUR
T1 - Grain structure refinement in nickel alloy welds by magnetic ARC stirring
AU - McCracken, Steven L.
AU - Yu, X.
AU - Lim, Y. C.
AU - Farson, D. F.
AU - Babu, S. S.
PY - 2011
Y1 - 2011
N2 - Nickel alloys with high chromium content provide optimum resistant to stress corrosion cracking for service in the reactor coolant system of commercial nuclear power plants. High chromium nickel-base alloys however present many challenges, such as less than ideal weldability and susceptibility to solidification cracking or solid-state cracking depending on welding conditions and dilution effects with dissimilar metals. Moreover, the presence of large solidification grains, typical of nickel alloy weld metals, makes ultrasonic examination of the weldment difficult. Magnetic stirring of the nickel alloy weld pool has the potential to address these challenges and improve joining, overlay welding, cladding, and repair of critical components in commercial nuclear power plants. This study evaluates use of magnetic arc stirring to modify weld pool solidification conditions in order to promote a fine solidification grain structure in nickel alloy welds.
AB - Nickel alloys with high chromium content provide optimum resistant to stress corrosion cracking for service in the reactor coolant system of commercial nuclear power plants. High chromium nickel-base alloys however present many challenges, such as less than ideal weldability and susceptibility to solidification cracking or solid-state cracking depending on welding conditions and dilution effects with dissimilar metals. Moreover, the presence of large solidification grains, typical of nickel alloy weld metals, makes ultrasonic examination of the weldment difficult. Magnetic stirring of the nickel alloy weld pool has the potential to address these challenges and improve joining, overlay welding, cladding, and repair of critical components in commercial nuclear power plants. This study evaluates use of magnetic arc stirring to modify weld pool solidification conditions in order to promote a fine solidification grain structure in nickel alloy welds.
KW - Filler metal (Inconel™) 52M
KW - Gas tungsten arc welding (GTAW)
KW - Grain refinement
KW - Magnetic stir welding
KW - Nickel-base weld metal
KW - Solidification cracking
KW - Ultrasonic examination
UR - http://www.scopus.com/inward/record.url?scp=84881426517&partnerID=8YFLogxK
U2 - 10.1115/PVP2011-57681
DO - 10.1115/PVP2011-57681
M3 - Conference article
AN - SCOPUS:84881426517
SN - 0277-027X
VL - 6
SP - 1565
EP - 1577
JO - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
JF - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
IS - PARTS A AND B
T2 - ASME 2011 Pressure Vessels and Piping Conference, PVP 2011
Y2 - 17 July 2011 through 21 July 2011
ER -