Evidence that abnormal grain growth precedes fatigue crack initiation in nanocrystalline Ni-Fe
Journal Article
·
· Scripta Materialia
Prior studies on the high-cycle fatigue behavior of nanocrystalline metals have shown that fatigue fracture is associated with abnormal grain growth (AGG). However, those previous studies have been unable to determine if AGG precedes fatigue crack initiation, or vice-versa. The present study shows that AGG indeed occurs prior to crack formation in nanocrystalline Ni-Fe by using a recently developed synchrotron X-ray diffraction modality that has been adapted for in-situ analysis. The technique allows fatigue tests to be interrupted at the initial signs of the AGG process, and subsequent microscopy reveals the precursor damage state preceding crack initiation.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC02-76SF00515; AC04-94AL85000; NA0003525
- OSTI ID:
- 1379978
- Alternate ID(s):
- OSTI ID: 1398778
- Report Number(s):
- SAND-2017-9766J; S1359646217305110; PII: S1359646217305110
- Journal Information:
- Scripta Materialia, Journal Name: Scripta Materialia Vol. 143 Journal Issue: C; ISSN 1359-6462
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 14 works
Citation information provided by
Web of Science
Web of Science
Similar Records
The onset and evolution of fatigue-induced abnormal grain growth in nanocrystalline Ni–Fe
Fatigue stress concentration and notch sensitivity in nanocrystalline metals
Fatigue-driven acceleration of abnormal grain growth in nanocrystalline wires
Journal Article
·
Tue Oct 11 00:00:00 EDT 2016
· Journal of Materials Science
·
OSTI ID:1379978
+3 more
Fatigue stress concentration and notch sensitivity in nanocrystalline metals
Journal Article
·
Fri Mar 11 00:00:00 EST 2016
· Journal of Materials Research
·
OSTI ID:1379978
+4 more
Fatigue-driven acceleration of abnormal grain growth in nanocrystalline wires
Journal Article
·
Mon Dec 10 00:00:00 EST 2018
· Modelling and Simulation in Materials Science and Engineering
·
OSTI ID:1379978
+1 more