TY - JOUR
T1 - Effect of Microstructures on Low-Cycle Fatigue Properties and Surface Crack Propagation Behavior in Ductile Cast Irons
AU - Ochi, Yasuo
AU - Ishii, Akira
AU - Sasaki, Shigemi
AU - Sakaguchi, Yoshiyuki
AU - Kubota, Masanobu
PY - 1994
Y1 - 1994
N2 - Total-strain controlled low-cycle fatigue tests were carried out at room temperature on three kinds of ductile cast iron (ferritic ductile iron; FDI, pearlite-ferritic ductile iron; P-FDI, and pearlitic ductile iron; PDI) of round bar-type specimens with a small drilled notch. Fatigue deformation properties such as stress amplitude, plastic strain and cyclic stress-strain curve were measured, and the relationship between the strain amplitude and the fatigue life was investigated in the three cast irons. Propagation behavior of the surface fatigue crack initiated from the small notch was observed in detail at the surface. The fracture surface, the effects of graphite distribution and base microstructure on the crack growth behavior were investigated experimentally. The surface crack propagation rate da/dN was evaluated in the J integral range ΔJ, and the results for these cast irons were compared with the results for other metals.
AB - Total-strain controlled low-cycle fatigue tests were carried out at room temperature on three kinds of ductile cast iron (ferritic ductile iron; FDI, pearlite-ferritic ductile iron; P-FDI, and pearlitic ductile iron; PDI) of round bar-type specimens with a small drilled notch. Fatigue deformation properties such as stress amplitude, plastic strain and cyclic stress-strain curve were measured, and the relationship between the strain amplitude and the fatigue life was investigated in the three cast irons. Propagation behavior of the surface fatigue crack initiated from the small notch was observed in detail at the surface. The fracture surface, the effects of graphite distribution and base microstructure on the crack growth behavior were investigated experimentally. The surface crack propagation rate da/dN was evaluated in the J integral range ΔJ, and the results for these cast irons were compared with the results for other metals.
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U2 - 10.1299/kikaia.60.619
DO - 10.1299/kikaia.60.619
M3 - Article
AN - SCOPUS:0028400177
SN - 0387-5008
VL - 60
SP - 619
EP - 625
JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
IS - 571
ER -