Effect of holes on the room temperature tensile behaviors of thin wall specimens with (210) side surface of Ni-base single crystal superalloy

Zhou, Ziyun; Liu, T.; Pu, Shi; Xu, Hongjie; Wang, L.; Lou, Langhong

doi:10.1016/j.jallcom.2015.06.069

Cited by 17 publications

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To address the problem of blade fracture failure caused by FCHs, numerous studies have been conducted on the influence of drilling surface quality 5,6 , holes configuration 7,8 , and crystal orientation 9,10 of the FCHs on their fatigue behavior, including low-/high-cycle fatigue and fatigue-creep behavior. The initial surface integrity assessment of FCHs under different drilling processes has great impact on fatigue life of structural components.…”

Section: Introductionmentioning

confidence: 99%

Research on low‐cycle fatigue behavior of Ni‐based single crystal superalloy with shaped film cooling holes at high temperature

Li,

Wen,

Meng

et al. 2023

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

Film cooling holes (FCHs) geometric structure significantly affects low‐cycle fatigue (LCF) of the single crystal turbine blade. This study investigates the LCF behavior of Ni‐based single crystal plate specimens with two different structure FCHs, including elliptical and fan‐shaped FCHs, by high temperature fatigue tests and crystal plasticity simulation. The results show that the LCF life of the fan‐shaped FCHs is shorter than those of the elliptical FCHs. The fracture characteristics and microstructure evolution of different structure FCHs are dissimilar. Oxidation affects the fatigue crack nucleation process at the FCH edge. The resolved shear stress (RSS) around fan‐shaped FCHs is greater than elliptical FCHs under one cyclic stress, and the area with larger RSS is consistent with fatigue crack nucleation position. The early LCF failure is mainly attributed to the high temperature oxidation of the local slip deformation induced by RSS concentration around the FCHs.

show abstract

Section: Introductionmentioning

confidence: 99%

Research on low‐cycle fatigue behavior of Ni‐based single crystal superalloy with shaped film cooling holes at high temperature

Li,

Wen,

Meng

et al. 2023

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…Combined with the plastic theory of single crystal, numerical calculations were conducted that revealed satisfactory results [26]- [28]. Zhou performed room temperature tensile tests on the nickel-based single crystal alloy with a hole in the center along various orientations and observed the strain field distribution of the sample in real-time through the ARAMIS system [29], [30].…”

Section: Introductionmentioning

confidence: 99%

Surface Slip Deformation Characteristics of Nickel-Base Single Crystal Thin Plates With Film Cooling Holes

Zhang

et al. 2020

IEEE Access

View full text Add to dashboard Cite

In this study, tensile tests at room temperature and observations of slip bands on the free surface of a nickel-based single-crystal thin plate with densely distributed film cooling holes were performed. The deformation of the slip system at the edge of the cooling hole and between the holes was analyzed. Numerical simulation predictions were conducted based on the plasticity theory of crystals, and the comparison with the experimental results showed good consistency. Based on the simulation and experimental results, the nucleation and propagation direction of the edge cracks were analyzed by means of crystallography. The results showed that the fracture surface was mainly attributed to slipping, and the slip traces were approximately in two directions, namely [011] and [01-1], both of which were 45 • to the stress axis. The maximum values of the resolved shear stress around the cooling hole were attained at 82.5 • , 112.5 • , 247.5 • , and 277.5 • , which corresponded to τ 2 , τ 8 , τ 10 , and τ 6 . INDEX TERMSNi-based single crystal, film cooling holes, crystal plasticity, slip deformation, micro crack initiation.

show abstract

“…Additionally, perforated materials show different flow ability compared to full materials. In tensile tests, Zhou et al [7] showed that there are higher strain concentrations around the holes in perforated tensile specimens. Moreover, Baik et al [8] have analysed the apparent limiting strains of perforated sheets under biaxial stretching.…”

Section: Introductionmentioning

confidence: 99%

Forming Behaviour of Micro-Structured Aluminium Sheets

Czotscher

2016

AMR

View full text Add to dashboard Cite

For a deeper understanding of the forming behaviour of perforated aluminium sheets (Al99.5) in micro deep drawing processes, tensile and stretch forming tests are performed at forming speeds of 0.1 mm/s and 0.25 mm/s. The sheets have thicknesses of 100 µm and 200 µm, a perforated rectangular hole geometry of 300 µm x 300 µm and a bar width of 40 µm. During stretch-forming tests the flow characteristics and failure mechanisms within the mesh structure are determined. An isotropic forming behaviour with low ductility is observed. The maximum stretch-forming depth is increased at increasing perforated area. The mesh structure failure is peripherally obtained due to notch effects, friction and micro related size effects within the mesh structure. Moreover, the results show that cracks and necking within the mesh structure occur only tangentially to the punch movement due to high uniaxial stresses caused by the forming process.

show abstract

Effect of holes on the room temperature tensile behaviors of thin wall specimens with (210) side surface of Ni-base single crystal superalloy

Cited by 17 publications

References 14 publications

Research on low‐cycle fatigue behavior of Ni‐based single crystal superalloy with shaped film cooling holes at high temperature

Research on low‐cycle fatigue behavior of Ni‐based single crystal superalloy with shaped film cooling holes at high temperature

Surface Slip Deformation Characteristics of Nickel-Base Single Crystal Thin Plates With Film Cooling Holes

Forming Behaviour of Micro-Structured Aluminium Sheets

Contact Info

Product

Resources

About