Affordable Access

Publisher Website

High temperature fatigue crack growth of Haynes 230

Authors
Journal
Materials Characterization
1044-5803
Publisher
Elsevier
Volume
75
Identifiers
DOI: 10.1016/j.matchar.2012.09.012
Keywords
  • Fatigue Crack Growth
  • Digital Image Correlation
  • Nickel-Based Superalloy
  • Crack Closure
  • Slip Irreversibility

Abstract

Abstract The fatigue crack growth of the nickel-based superalloy Haynes 230 was investigated at room temperature and 900°C using digital image correlation (DIC). As expected, the crack growth rates at high temperature were much faster than at room temperature. However, the crack closure levels, which were determined using digital image correlation analysis techniques, were found to be similar for the two cases studied. DIC strain fields and the corresponding plastic zone sizes were compared between the two cases. From these strain fields, the slip irreversibility, the difference between forward and reversed strains at the crack tip, was quantitatively measured. The high temperature case had an order of magnitude higher amount of slip irreversibility. Slip irreversibility measurements were determined to be an effective method to compare fatigue crack growth of cases with differing temperatures.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Effects of temperature and hold time on creep-fati...

on Materials Science and Engineer... Jan 01, 2006

Fracture modes of HAYNES®230®alloy during fatigue-...

on Materials Science and Engineer... Jan 01, 2005

Hold time effects on low cycle fatigue behavior of...

on Materials Science and Engineer... Jan 01, 2005

Application of crack tip plasticity based fatigue...

on International Journal of Fatig...
More articles like this..