Ductile cast irons: microstructure influence on fatigue crack propagation resistance
Journal Title: Frattura ed Integrità Strutturale - Year 2010, Vol 4, Issue 13
Abstract
Microstructure influence on fatigue crack propagation resistance in five different ductile cast irons (DCI) was investigated. Four ferrite/pearlite volume fractions were considered, performing fatigue crack propagation tests according to ASTM E647 standard (R equals to 0.1, 0.5 and 0.75, respectively). Results were compared with an austempered DCI. Damaging micromechanisms were investigated according to the following procedures: - “traditional” Scanning Electron Microscope (SEM) fracture surfaces analysis; - SEM fracture surface analysis with 3D quantitative analysis; - SEM longitudinal crack profile analysis - Light Optical Microscope (LOM) transversal crack profile analysis;
Authors and Affiliations
Francesco Iacoviello, Vittorio Di Cocco, Mauro Cavallini
Keywords
Related Articles
- EP ID EP134783
- DOI 10.3221/IGF-ESIS.13.01
- Views 58
- Downloads 0
Mechanical behaviour and durability of high volume fly ash cementitious composites
The purpose of this research is to separate different morphological particles of ASTM class F fly ash, and study their effect on mechanical behaviour and durability of high volume cementitious mixtures. In this res...
Proposta di utilizzo di metodologie termografiche per il controllo di qualità di componenti meccanici
In base all’esperienza maturata in anni di sperimentazione sull’analisi delle caratteristiche meccaniche dei materiali mediante indagine termografica, nel presente lavoro è proposta una procedura per il controllo di qual...
Design optimization of cruciform specimens for biaxial fatigue loading
In order to correctly assess the biaxial fatigue material properties one must experimentally test different load conditions and stress levels. With the rise of new in-plane biaxial fatigue testing machines, using...
The influence of fibre orientation on the post-cracking tensile behaviour of steel fibre reinforced self-compacting concrete
Adding fibres to concrete provides several advantages, especially in terms of controlling the crack opening width and propagation after the cracking onset. However, distribution and orientation of the fibres towa...
Models of initiation fatigue crack paths proposed by Macha
Professor E. Macha devoted his academic life to solving the problems connected with random multiaxial fatigue in components of machines and structures. In his studies he formulated stress, strain and energy crite...