The Evolution of Fretting Wear Behavior and Damage Mechanism in Alloy 690TT with Cycle Number.
Alloy 690TT
TTS
cycle number
fretting induced fatigue
fretting induced wear
fretting running status
glaze layer
Journal
Materials (Basel, Switzerland)
ISSN: 1996-1944
Titre abrégé: Materials (Basel)
Pays: Switzerland
ID NLM: 101555929
Informations de publication
Date de publication:
25 May 2020
25 May 2020
Historique:
received:
03
05
2020
revised:
18
05
2020
accepted:
22
05
2020
entrez:
30
5
2020
pubmed:
30
5
2020
medline:
30
5
2020
Statut:
epublish
Résumé
The evolution of fretting wear behavior and damage mechanism in Alloy 690TT with cycle number was investigated via laser scanning confocal microscopy (LSCM), scanning electron microscopy (SEM), focus ion beam (FIB), and transmission electron microscopy (TEM). The results showed that the fretting running status underwent a transition from partial slip and mixed stick-slip to final gross slip with the transformation of Ft-D curves from the ellipse to the parallelogram. The coefficient of friction (COF) experienced three drops throughout the fretting process, which indicated the transformation from high-friction wear to low-friction wear. The first drop was due to the transition from two-body to three-body contact. The second and third drops were mainly related to the evolution of the glaze layer from a localized distribution to completely covering the whole contact surface. The competition between fretting induced fatigue cracking (FIF) and fretting induced wear (FIW) ran through the entire fretting wear process. Before the 1.2 × 10
Identifiants
pubmed: 32466203
pii: ma13102417
doi: 10.3390/ma13102417
pmc: PMC7288311
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : Beijing Municipal Natural Science Foundation
ID : 2194081
Organisme : China Postdoctoral Science Foundation
ID : 2018M641187
Organisme : Fundamental Research Funds for the Central Universities
ID : FRF-TP-18-047A1