A quantitative three-dimensional in situ study of a short fatigue crack in a magnesium alloy
Source abstract
Abstract
Abstract A previous four-dimensional in situ study of a short crack in a magnesium alloy King et al. (2011), Elektron 21, used synchrotron X-ray computed micro-tomography to follow its three-dimensional development with progressive fatigue cycling through the microstructure, which had been mapped by diffraction contrast tomography to measure grain shapes and crystal orientations in three dimensions. In the present work, very high-resolution post-test examination of the same sample by Serial Block Face Scanning Electron Microscopy (SBFSEM) provided three-dimensional fractographs to investigate the influence of microstructural features on the measured crack propagation rates. Digital volume correlation, applied to the X-ray computed micro-tomography datasets, measured the three-dimensional crack opening displacements and hence the crack opening modes. The short fatigue crack in magnesium propagated with mixed mode opening. Basal plane fracture is a dominant mechanism; hence, boundaries that disrupt the continuity of the basal plane are proposed to influence the crack propagation rate.
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Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Aluminum Alloys Composites Properties · Aluminum Alloy Microstructure Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (38)
Show source-provided references
1. Coarse slip model of fatigue10.1016/0001-6160(69)90099-6 ↗
2. The merging of fatigue and fracture mechanics concepts: a historical perspective10.1016/S0376-0421(98)00006-2 ↗
3. Microstructure-sensitive computational modelling of fatigue crack formation10.1016/j.ijfatigue.2010.01.003 ↗
4. X-ray microtomography of materials10.1179/095066099101528261 ↗
5. On the application of X-ray microtomography in the field of materials science10.1002/1527-2648(200108)3:8<539::AID-ADEM539>3.0.CO;2-6 ↗
6. P. Study of the interaction of a short fatigue crack with grain boundaries in a cast Al alloy using X-ray microtomography10.1016/S1359-6454(02)00320-8 ↗
7. X-ray tomography of short fatigue crack nucleation in austempered ductile cast iron10.1016/j.ijfatigue.2003.11.001 ↗
8. Three-dimensional visualisation of fatigue cracks in metals using high resolution synchrotron X-ray microtomography10.1179/174328406X114135 ↗
9. 3-D growth of a short fatigue crack within a polycrystalline microstructure studied using combined diffraction and phase-contrast X-ray tomography10.1016/j.actamat.2010.09.063 ↗
10. X-ray diffraction contrast tomography: a novel technique for three-dimensional grain mapping of polycrystals II. The combined case10.1107/S0021889808001726 ↗
11. Observations of intergranular stress corrosion cracking in a grain-mapped polycrystal10.1126/science.1156211 ↗
12. Three-dimensional observation and image-based modelling of thermal strains in polycrystalline alumina10.1016/j.actamat.2013.06.005 ↗
13. Three-dimensional in situ observations of short fatigue crack growth in magnesium10.1016/j.actamat.2011.07.034 ↗
14. Fatigue crack growth in metals and alloys: mechanisms and micromechanics10.1179/imr.1992.37.1.45 ↗
15. Fatigue crack path prediction in UDIMET 720 nickel-based alloy single crystals10.1007/s11661-000-0058-6 ↗
16. Modelling the threshold conditions for propagation of stage I fatigue cracks10.1016/S1359-6454(97)00290-5 ↗
17. Modelling of short crack propagation – transition from stage I to stage II10.1016/j.engfracmech.2007.02.018 ↗
18. Influence of twins on short fatigue cracks in type 316L stainless steel10.4028/www.scientific.net/KEM.465.507 ↗
19. Influence of grain orientations on the initiation of fatigue damage in an Al–Li alloy10.1046/j.1365-2818.1999.00573.x ↗
20. Polycrystal orientation distribution effects on microslip in high cycle fatigue10.1016/S0142-1123(02)00057-9 ↗
21. X-ray micro-tomography coupled to the extended finite element method to investigate microstructurally short fatigue cracks10.4028/www.scientific.net/MSF.567-568.301 ↗
22. A 3-D view on the mechanisms of short fatigue cracks interacting with grain boundaries10.1016/j.actamat.2010.11.051 ↗
23. Nanotomography for understanding materials degradation10.1016/j.scriptamat.2010.06.031 ↗
24. Digital volume correlation: three-dimensional strain mapping using X-ray tomography10.1007/BF02323555 ↗
25. Influence of closure on the 3D propagation of fatigue cracks in a nodular cast iron investigated by X-ray tomography and 3D volume correlation10.1016/j.actamat.2010.01.024 ↗
26. 3D deformation and strain analysis in compacted sugar using x-ray microtomography and digital volume correlation10.1088/0957-0233/20/9/095703 ↗
27. Evaluation of three-dimensional and two-dimensional full displacement fields of a single edge notch fracture mechanics specimen, in light of experimental data using X-ray tomography10.1016/j.engfracmech.2009.08.001 ↗
28. 3D studies of indentation by combined X-ray tomography and digital volume correlation10.4028/www.scientific.net/KEM.592-593.14 ↗
29. A comparison of the mechanical behaviour of standard and auxetic foams by X-ray computed tomography and digital volume correlation10.1111/str.12053 ↗
30. Three-dimensional crack observation, quantification and simulation in a quasi-brittle material10.1016/j.actamat.2013.07.011 ↗
31. Flexural strength and defect behaviour of polygranular graphite under different states of stress10.1016/j.carbon.2013.03.025 ↗
32. Three-dimensional analysis of an in situ double-torsion Test by X-ray computed tomography and digital volume correlation10.1007/s11340-013-9727-4 ↗
33. A novel “subset splitting” procedure for digital image correlation on discontinuous displacement fields10.1007/s11340-009-9220-2 ↗
34. Twinning and the ductility of magnesium alloys: Part I: “Tension” twins10.1016/j.msea.2006.12.037 ↗
35. Twinning–detwinning behavior during the strain-controlled low-cycle fatigue testing of a wrought magnesium alloy, ZK60A10.1016/j.actamat.2007.10.030 ↗
36. The crystallographic characteristics of fracture in magnesium single crystals10.1016/0001-6160(57)90075-5 ↗
37. Fatigue damage development in pure polycrystalline magnesium under cyclic tension–compression loading10.1016/j.msea.2011.06.064 ↗
38. Fatigue crack propagation behavior in magnesium single crystals10.2320/jinstmet1952.67.5_247 ↗