A METALLURGICAL MECHANISM FOR CORROSION-FATIGUE (CIRCUMFERENTIAL) CRACK INITIATION AND PROPAGATION IN CR-MO BOILER TUBE STEELS

Authors
SMITH BJ MARDER AR
Citation
Bj. Smith et Ar. Marder, A METALLURGICAL MECHANISM FOR CORROSION-FATIGUE (CIRCUMFERENTIAL) CRACK INITIATION AND PROPAGATION IN CR-MO BOILER TUBE STEELS, Materials characterization, 33(1), 1994, pp. 45-50
Citations number
7
Categorie Soggetti
Materials Science, Characterization & Testing
Journal title
Materials characterization → ACNP
ISSN journal
10445803
Volume
33
Issue
1
Year of publication
1994
Pages
45 - 50
Database
ISI
SICI code
1044-5803(1994)33:1<45:AMMFC(>2.0.ZU;2-1
Abstract
The metallurgical mechanism responsible for the initiation and propaga tion of circumferentially oriented, fire-side cracks on waterwall boil er tube steels was investigated. The results showed that cracks were i nitiated by a sulfidation corrosion/thermal fatigue interactive mechan ism. Crack propagation occurs by an environmentally assisted thermal-f atigue mechanism.