Crack paths in single-crystal Ni-base superalloys under isothermal and thermomechanical fatigue

RW Neu - International Journal of Fatigue, 2019 - Elsevier
Fatigue crack paths in single-crystal Ni-base superalloys do not follow the classical Stage
I/Stage II behavior. In fact, the opposite often occurs with cracks growing initially in Mode I …

Temperature and ΔK dependence of grain boundary effect on fatigue crack propagation in a two-dimensional polycrystalline Ni-base superalloy

S Suzuki, M Sakaguchi, M Domen, T Karato, K Suzuki - Acta Materialia, 2022 - Elsevier
Abstract Effects of grain boundaries (GBs) on fatigue crack propagation (FCP) in a cast Ni-
base superalloy were experimentally investigated using “two-dimensional” polycrystalline …

Mechanistic fatigue in Ni-based superalloy single crystals: A study of crack paths and growth rates

V Karamitros, DW MacLachlan, FPE Dunne - Journal of the Mechanics and …, 2022 - Elsevier
The mechanistic basis of microstructurally short crack paths and growth rates is investigated
in Ni-based superalloy single crystals using Crystal Plasticity (CP) and eXtended Finite …

In-situ fatigue behavior study of a nickel-based single-crystal superalloy with different orientations

X Ren, J Lu, J Zhou, X Liu, W Jiang, J Wang… - Materials Science and …, 2022 - Elsevier
This work studied the relationship between the fatigue behavior and microstructural
evolution of a second-generation nickel-based single-crystal superalloy with [001],[102], and …

Modelling of short crack growth in single crystal Ni γ− γ′ microstructure

V Karamitros, DW MacLachlan, FPE Dunne - Acta Materialia, 2022 - Elsevier
Mechanistic short crack growth in single crystal Ni γ− γ′ microstructure is investigated using
Crystal Plasticity (CPFEM) and eXtended Finite Element Method (XFEM). Maximum slip and …

含冷却孔镍基合金次级取向效应的应变梯度晶体塑性有限元研究

熊宇凯, 赵建锋, 饶威, 黄志勇, 康国政, 张旭 - 力学学报, 2023 - lxxb.cstam.org.cn
单晶镍基合金具有优异的耐高温, 高强, 高韧等性能, 这些力学性能受制造过程引入的次级取向和
冷却孔的影响. 已有研究大多关注单孔薄板的变形机理和力学性能, 而工程中应用的往往是多孔 …

[HTML][HTML] Effect of secondary orientation on the tensile behavior of single-crystal superalloys with [001] primary orientation at 760° C

X Gao, Z Zhang, L Liu, L Cao, C Liu, C Tao - Journal of Materials Research …, 2024 - Elsevier
This study assesses the impact of secondary orientations on the tensile deformation
behavior of single-crystal superalloys at mid-temperature of 760° C. Tensile tests and stress …

Crystal plasticity assessment of crystallographic Stage I crack propagation in a Ni-based single crystal superalloy

M Sakaguchi, R Komamura, X Chen, M Higaki… - International Journal of …, 2019 - Elsevier
Stage I fatigue crack propagation along crystallographic slip planes was experimentally and
analytically investigated in a single crystal Ni-base superalloy, NKH-304. Fatigue crack …

Low cycle fatigue behavior and crack initiation mechanism of Ni-based single crystal curved thin-walled blade simulator specimen with film cooling holes

Z Li, Z Wen, Y Liu, P He, Y Dai, R Chen… - International Journal of …, 2024 - Elsevier
A novel curved thin-walled blade simulator (CTWBS) specimens was used to investigate low
cycle fatigue (LCF) behavior and crack initiation mechanism nearby film cooling holes …

Crystal plasticity analysis of cylindrical holes and their effects on the deformation behavior of Ni-based single-crystal superalloys with different secondary orientations

H Zhou, X Zhang, P Wang, S Lu - International Journal of Plasticity, 2019 - Elsevier
The effects of cylindrical holes and secondary orientations on the deformation behavior of Ni-
based single crystals were investigated by in-situ tensile experiments and crystal plasticity …