Elevated-Temperature Creep-Fatigue Crack-Growth Behavior of HAYNES®188 Superalloy

The creep-fatigue crack-growth behavior of HAYNES® 188, a cobalt-based superalloy, was studied at the temperatures of 649, 816, and 927 oC under isothermal conditions. Various hold times at the maximum load were introduced to study the effects of hold time and temperature on the crack-growth behavio...

Full description

Saved in:
Bibliographic Details
Published in:Key engineering materials 2007-08, Vol.345-346, p.287-290
Main Authors: Bhattacharya, Arun K., Klarstrom, Dwaine L., Liaw, Peter K., Blust, James W., Lee, S.Y., Choo, Hahn, Browning, Paul F., Thompson, Scott A., Lu, Y.L., Aurrecoechea, Jose M.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The creep-fatigue crack-growth behavior of HAYNES® 188, a cobalt-based superalloy, was studied at the temperatures of 649, 816, and 927 oC under isothermal conditions. Various hold times at the maximum load were introduced to study the effects of hold time and temperature on the crack-growth behavior. The experiments were conducted under constant stress-intensity-factorrange control modes. Crack lengths were measured by a direct current potential method. The introduction of hold times led to an increase in the cyclic crack-growth rate. As the temperature increases, the time-dependent crack-growth behavior was dominant.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.345-346.287