TY - JOUR
T1 - Low cycle fatigue of a polycrystalline Ni-based superalloy
T2 - Deformation substructure analysis
AU - Phillips, P. J.
AU - Unocic, R. R.
AU - Mills, M. J.
PY - 2013
Y1 - 2013
N2 - The deformation behavior of the polycrystalline superalloy R104 has been characterized via scanning transmission electron microscopy (STEM). Specimens tested under low cycle fatigue (LCF) conditions were examined based on testing temperature, total strain range, and/or cycle number. Extensive electron microscopy characterization has revealed non-planar deformation to be a dominant mode in polycrystalline R104, resulting from ample cross-slipping processes between {1 1 1} and {1 0 0} planes. Somewhat unexpectedly, this mechanism appears at both low and high temperatures, although the macroscopic material response is quite different.
AB - The deformation behavior of the polycrystalline superalloy R104 has been characterized via scanning transmission electron microscopy (STEM). Specimens tested under low cycle fatigue (LCF) conditions were examined based on testing temperature, total strain range, and/or cycle number. Extensive electron microscopy characterization has revealed non-planar deformation to be a dominant mode in polycrystalline R104, resulting from ample cross-slipping processes between {1 1 1} and {1 0 0} planes. Somewhat unexpectedly, this mechanism appears at both low and high temperatures, although the macroscopic material response is quite different.
KW - Deformation substructure
KW - Fatigue
KW - Ni-based superalloys
KW - STEM
UR - http://www.scopus.com/inward/record.url?scp=84885949610&partnerID=8YFLogxK
U2 - 10.1016/j.ijfatigue.2012.11.008
DO - 10.1016/j.ijfatigue.2012.11.008
M3 - Article
AN - SCOPUS:84885949610
SN - 0142-1123
VL - 57
SP - 50
EP - 57
JO - International Journal of Fatigue
JF - International Journal of Fatigue
ER -