SYMPOSIA PAPER Published: 01 January 1985
STP34251S

Effect of Hydrogen on Crack Initiation and Growth in 18Mn-4Cr Steel

Source

Hydrogen-assisted cracking in generator rotor end rings is a major concern of the utility industry. To assess the susceptibility of an austenitic 18Mn-4Cr end ring steel to a hydrogen environment, an experimental program was carried out to determine crack initiation and fatigue crack growth properties in hydrogen gas and air. In this program, a peak read detection circuit was designed to determine accurately crack initiation and early crack growth. Test results show that a hydrogen environment does not significantly influence the crack growth rate; however, it reduces the crack initiation life at a low notch root stress range.

Author Information

Kim, Y-J
Ontario Hydro Research Laboratory, Toronto, Ontario, Canada
Mukherjee, B
Ontario Hydro Research Laboratory, Toronto, Ontario, Canada
Carpenter, DW
Ontario Hydro Research Laboratory, Toronto, Ontario, Canada
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: E08
Pages: 149–166
DOI: 10.1520/STP34251S
ISBN-EB: 978-0-8031-4933-5
ISBN-13: 978-0-8031-0225-5