TY - JOUR
T1 - Stress field and propagation trend of crack tip in tenon of nickel-based single crystal superalloys turbine blade
AU - Gao, Yu Fen
AU - Hu, Wei Bing
AU - Wen, Zhi Xun
AU - Yue, Zhu Feng
AU - Chen, Long
PY - 2014/3
Y1 - 2014/3
N2 - A rate-dependent crystal slip finite element program was used to analyze the crack characteristic in tenon of nickel-based single crystal superalloys turbine blade, while the influence of crystallographic orientations was also taken into account. The Mises stress distributions of crack tip in tenon under isotropic condition combined with {001}, {011}, {111} crystal orientations were researched. Then the crack propagation trend was examined. The results show that: significant stress concentration and relatively large stress gradient occur in the crack tip with orientations of {001} [110], {011} [110], {111} [110]. The maximum stress value appears at the crack tip. Crack propagation trend varies with different crystallographic orientations. Under {001} [110], {011} [110], {111} [110] conditions, the crack propagation angle is 45°, 54.7°, 90°, respectively. It is clear that crystallographic orientation has significant influence on crack propagation trend of nickel-based single crystal superalloys turbine blade.
AB - A rate-dependent crystal slip finite element program was used to analyze the crack characteristic in tenon of nickel-based single crystal superalloys turbine blade, while the influence of crystallographic orientations was also taken into account. The Mises stress distributions of crack tip in tenon under isotropic condition combined with {001}, {011}, {111} crystal orientations were researched. Then the crack propagation trend was examined. The results show that: significant stress concentration and relatively large stress gradient occur in the crack tip with orientations of {001} [110], {011} [110], {111} [110]. The maximum stress value appears at the crack tip. Crack propagation trend varies with different crystallographic orientations. Under {001} [110], {011} [110], {111} [110] conditions, the crack propagation angle is 45°, 54.7°, 90°, respectively. It is clear that crystallographic orientation has significant influence on crack propagation trend of nickel-based single crystal superalloys turbine blade.
KW - Crack tip
KW - Finite element method
KW - Nickel-based single crystal superalloys blade
KW - Propagation trend
KW - Stress field
UR - http://www.scopus.com/inward/record.url?scp=84897985832&partnerID=8YFLogxK
U2 - 10.13224/j.cnki.jasp.2014.03.018
DO - 10.13224/j.cnki.jasp.2014.03.018
M3 - 文章
AN - SCOPUS:84897985832
SN - 1000-8055
VL - 29
SP - 612
EP - 618
JO - Hangkong Dongli Xuebao/Journal of Aerospace Power
JF - Hangkong Dongli Xuebao/Journal of Aerospace Power
IS - 3
ER -