TY - JOUR AU - Iacoviello, Francesco AU - Di Cocco, Vittorio AU - Cavallini, Mauro PY - 2013/04/03 Y2 - 2024/03/28 TI - Ductile cast irons: microstructure influence on fatigue crack propagation resistance JF - Frattura ed Integrità Strutturale JA - Fra&IntStrut VL - 4 IS - 13 SE - Miscellanea DO - 10.3221/IGF-ESIS.13.01 UR - https://www.fracturae.com/index.php/fis/article/view/88 SP - pages 3-16 AB - Microstructure influence on fatigue crack propagation resistance in five different ductile cast irons<br />(DCI) was investigated. Four ferrite/pearlite volume fractions were considered, performing fatigue crack<br />propagation tests according to ASTM E647 standard (R equals to 0.1, 0.5 and 0.75, respectively). Results were<br />compared with an austempered DCI. Damaging micromechanisms were investigated according to the following<br />procedures:<br />- “traditional” Scanning Electron Microscope (SEM) fracture surfaces analysis;<br />- SEM fracture surface analysis with 3D quantitative analysis;<br />- SEM longitudinal crack profile analysis<br />- Light Optical Microscope (LOM) transversal crack profile analysis; ER -