Effects of grain size on fatigue crack growth behaviors of nanocrystalline superelastic NiTi shape memory alloys
Source abstract
Abstract
Abstract The grain size (GS) dependence of fatigue crack growth in nanocrystalline superelastic NiTi shape memory alloys (SMAs) with the average GS of 10, 30, 60 and 235 nm is investigated. Synchronized measurements of the fatigue crack growth, load-displacement response and temperature field of the compact tension specimens are performed. It is found that the fatigue crack growth rate (da/dN) is monotonically decreased by 10 times when the GS is increased from 10 to 235 nm. The significant GS effect on the fatigue crack growth is also confirmed by the direct observation of fatigue striation spacing on the postmortem fracture surface. It is shown that the increase of the GS significantly enhances the phase transition and plasticity of the material and therefore enhances the crack-tip shielding (Ksh) which reduces the effective driving force (ΔKeff) of the fatigue crack growth. Subtracting Ksh due to phase transition and plastic deformation from the external applied Kapp, the effective crack-tip fatigue driving force ΔKeff is obtained. The da/dN-ΔKeff curves for different GS specimens then almost collapse onto a single curve which may represent an intrinsic fatigue property of the NiTi in the absence of the shielding effects. Therefore the observed apparent GS dependence of the fatigue crack growth resistance in the superelastic NiTi SMAs is mainly caused by the shielding effect from the GS dependent phase transition and plastic deformation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Shape Memory Alloy Transformations · Nonlocal and gradient elasticity in micro/nano structures · Elasticity and Wave Propagation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (61)
Show source-provided references
1. Ultra-high fatigue life of NiTi cylinders for compression-based elastocaloric cooling10.1063/1.5115793 ↗
2. Shape memory alloy thin films and heterostructures for MEMS applications: a review10.1016/j.sna.2016.02.026 ↗
3. An overview of thin film nitinol endovascular devices10.1016/j.actbio.2015.03.025 ↗
4. Rate-dependent transformation ratcheting-fatigue interaction of super-elastic NiTi alloy under uniaxial and torsional loadings: experimental observation10.1016/j.ijfatigue.2019.06.034 ↗
5. Plastic strain localization in metals: origins and consequences10.1016/j.pmatsci.2013.06.001 ↗
6. Mechanical fatigue and fracture of Nitinol10.1179/1743280411Y.0000000009 ↗
7. Effect of crystallographic orientation and geometrical compatibility on fatigue crack initiation and propagation in rolled Ti-6Al-4 V alloy10.1016/j.actamat.2019.07.025 ↗
8. Transmission electron microscopy investigation of dislocation slip during superelastic cycling of Ni–Ti wires10.1016/j.ijplas.2010.05.005 ↗
9. Mechanisms of fatigue-crack propagation in ductile and brittle solids10.1023/A:1018655917051 ↗
10. Grain size effects on the fatigue response of nanocrystalline metals10.1016/S1359-6462(03)00393-2 ↗
11. Extreme grain refinement by severe plastic deformation: a wealth of challenging science10.1016/j.actamat.2012.10.038 ↗
12. A method to enhance cyclic reversibility of NiTiHf high temperature shape memory alloys10.1016/j.scriptamat.2006.02.029 ↗
13. Mechanical behavior of nanocrystalline metals and alloys10.1016/j.actamat.2003.08.032 ↗
14. Fatigue properties of a pseudoelastic NiTi alloy: strain ratcheting and hysteresis under cyclic tensile loading10.1016/j.ijfatigue.2014.03.011 ↗
15. Phase transformation volume amplitude as a low-cycle fatigue indicator in nickel–titanium shape memory alloys10.1016/j.scriptamat.2019.12.014 ↗
16. Stress-induced nanoscale phase transition in superelastic NiTi by in situ X-ray diffraction10.1016/j.actamat.2015.02.024 ↗
17. Fatigue crack growth in cold-rolled and annealed polycrystalline superelastic NiTi alloys10.1007/s10338-018-0056-0 ↗
18. Transformation-induced plasticity during pseudoelastic deformation in Ni–Ti microcrystals10.1016/j.actamat.2009.04.009 ↗
19. In situ multi-field investigation of grain size effects on the rate-dependent thermomechanical responses of polycrystalline superelastic NiTi
20. Nanoscale phase transition behavior of shape memory alloys — Closed form solution of 1D effective modelling, J10.1016/j.jmps.2017.09.008 ↗
21. Stress hysteresis and temperature dependence of phase transition stress in nanostructured NiTi—Effects of grain size10.1063/1.4812643 ↗
22. Grain size dependence of Young's modulus and hardness for nanocrystalline NiTi shape memory alloy10.1016/j.matlet.2017.10.024 ↗
23. Origin of zero and negative thermal expansion in severely-deformed superelastic NiTi alloy10.1016/j.actamat.2016.10.054 ↗
24. Effects of grain size on the rate-dependent thermomechanical responses of nanostructured superelastic NiTi10.1016/j.actamat.2014.05.007 ↗
25. Martensitic phase transformations in nanocrystalline NiTi studied by TEM10.1016/j.actamat.2003.08.036 ↗
26. Deformation physics of shape memory alloys – Fundamentals at atomistic frontier10.1016/j.pmatsci.2017.03.003 ↗
27. Grain size dependence of fracture toughness and crack-growth resistance of superelastic NiTi10.1016/j.scriptamat.2015.10.036 ↗
28. Grain size effects on NiTi shape memory alloy fatigue crack growth, J10.1557/jmr.2017.395 ↗
29. Mechanisms of fatigue crack propagation in metals, ceramics and composites: role of crack tip shielding10.1016/0025-5416(88)90547-2 ↗
30. Crack-closure based method for modelling the fatigue behavior of superelastic NiTi10.1016/j.ijfatigue.2015.09.032 ↗
31. Suresh · 1998
32. Crystal structure and internal defects of equiatomic TiNi martensite10.1002/pssa.2210050220 ↗
33. Investigation of fatigue crack closure using multiscale image correlation experiments10.1016/j.engfracmech.2009.08.002 ↗
34. Experimental and numerical investigation of thickness effects in plasticity-induced fatigue crack closure10.1016/j.ijfatigue.2008.12.003 ↗
35. Superior fatigue crack growth resistance, irreversibility, and fatigue crack growth–microstructure relationship of nanocrystalline alloys10.1016/j.actamat.2011.07.058 ↗
36. Continuum theory of dilatant transformation toughening in ceramics10.1016/0020-7683(83)90031-8 ↗
37. Pseudoelastic toughening of a shock-resistant composite with transformable reinforcement10.1007/BF00558836 ↗
38. Study of relaxation and crystallization kinetics of NiTi made amorphous by repeated cold rolling10.1016/j.actamat.2010.08.026 ↗
39. Transformation behaviour and unusual twinning in a NiTi shape memory alloy ausformed using equal channel angular extrusion10.1080/14786430412331331961 ↗
40. Crystal refinement and amorphisation by cold rolling in TiNi shape memory alloys10.1016/S1359-6462(01)00740-0 ↗
41. Effects of grain size on acoustic emission of nanocrystalline superelastic NiTi shape memory alloys during fatigue crack growth10.1016/j.matlet.2019.05.149 ↗
42. Plastic deformation of NiTi shape memory alloys10.1016/j.actamat.2012.09.023 ↗
43. Effect of deformation frequency on temperature and stress oscillations in cyclic phase transition of NiTi shape memory alloy10.1016/j.jmps.2014.01.013 ↗
44. Temperature variation in NiTi shape memory alloy during cyclic phase transition10.1007/s11665-012-0395-9 ↗
45. Experimental observations on rate-dependent cyclic deformation of super-elastic NiTi shape memory alloy10.1016/j.mechmat.2016.02.011 ↗
46. A critical analysis of crack propagation laws10.1115/1.3656900 ↗
47. Mechanical behavior of material
48. The influence of metallurgical structure on the mechanisms of fatigue crack propagation
49. Mechanics of crack tip deformation and extension by fatigue
50. Dowling · 2012
51. Fatigue-crack growth behavior in the superelastic and shape-memory alloy nitinol10.1007/s11661-001-1008-7 ↗
52. On the distinction between plasticity- and roughness-induced fatigue crack closure10.1007/s11661-012-1121-9 ↗
53. On the fracture toughness enhancement due to stress-induced phase transformation in shape memory alloys10.1016/j.ijplas.2013.04.007 ↗
54. On the fracture toughness of pseudoelastic shape memory alloys10.1115/1.4025139 ↗
55. Crack growth resistance of shape memory alloys by means of a cohesive zone model10.1016/j.jmps.2007.03.002 ↗
56. On the exceptional damage-tolerance of gradient metallic materials10.1016/j.mattod.2019.09.023 ↗
57. Fatigue crack growth during gross plasticity and the J-integral, Mechanics of crack growth
58. Crack growth during low-cycle fatigue of smooth axial specimens, Cyclic stress-strain and plastic deformation aspects of fatigue crack growth
59. On the driving force for crack growth during thermal actuation of shape memory alloys10.1016/j.jmps.2015.12.011 ↗
60. Asymmetric crack wake plasticity – a reason for roughness induced crack closure10.1016/j.actamat.2004.06.014 ↗
61. Behavior of plasticity-induced crack closure and roughness-induced crack closure in aluminum alloy10.1016/S0142-1123(01)00155-4 ↗