Metallurgical Factors Influencing Hot Ductility of Austenitic Steel Piping at Weld Heat-Affected Zone Temperatures

Journal Article · Mon Apr 01 04:00:00 EST 1963 · Journal of Engineering for Power

DOI:https://doi.org/10.1115/1.3675237· OSTI ID:4696169

Cullen, T. M.; Freeman, J. W.

The variable hot ductility of wholly austenitic Type 347 steel was found to be associated with the variable temperature of formation of a liquid phase (liquation temperature) in the microstructure of the steel. In wholly austenitic materials a low liquation temperature leads to poor hot ductility. The liquation temperature of the steel was determined to be a function of its niobium, carbon, and nitrogen contents. When ferrite is present in the steel, poor hot ductility can also occur as a result of the crack sensitivity of the two-phased structure. (auth)

• Research Organization: Babcock and Wilcox Co., Alliance, Ohio
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-020477
• OSTI ID: 4696169
• Journal Information: Journal of Engineering for Power, Journal Name: Journal of Engineering for Power Journal Issue: 2 Vol. 85; ISSN 0022-0825; ISSN JEPOA8
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AUSTENITE
CARBIDES
CRACKS
DUCTILITY
FERRITES
HOT WORKING
IRON OXIDES
LATTICES
MELTING POINTS
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
NIOBIUM ALLOYS
NITRIDES
PHASE DIAGRAMS
PIPES
QUANTITY RATIO
STEELS
WELDS