journal article·2020-02

Effect of microstructure inhomogeneity and crack initiation environment on the very high cycle fatigue behavior of a magnesium alloy

Yao Chen, Chao He, Fulin Liu, Chong Wang, Qing Xie, Qingyuan Wang, Yongjie Liu

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Abstract

Abstract The VHCF behaviors of an extruded magnesium alloy are investigated. Due to the microstructure inhomogeneity, fatigue damages prefer to concentrate in the few larger grains. Basal slip deformations are supposed to be responsible for the transgranular crack initiations, and form the similar faceted morphologies. Under same stress amplitude, internal failures present longer fatigue lives than surface failures due to the requirement of larger initial crack and the deceleration rate in the vacuum-like environment at specimen interior.
Source: openaire · Quality: candidate unverified · Source record ↗

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 (44)

Show source-provided references
1. Gigacycle fatigue of ferrous alloys10.1046/j.1460-2695.1999.t01-1-00185.x ↗
2. Effects of inclusions on very high cycle fatigue properties of high strength steels10.1179/1743280411Y.0000000008 ↗
3. Diversity of damage evolution during cyclic loading at very high numbers of cycles10.1179/1743280411Y.0000000005 ↗
4. High-cycle fatigue crack initiation and propagation behaviour of high-strength spring steel wires
5. Effect of inclusion on subsurface crack initiation and gigacycle fatigue strength10.1016/S0142-1123(02)00037-3 ↗
6. Specific features and mechanisms of fatigue in the ultrahigh-cycle regime10.1016/j.ijfatigue.2005.05.018 ↗
7. EBSD analysis of fatigue crack initiation behavior in coarse-grained AZ31 magnesium alloy10.1016/j.ijfatigue.2015.11.010 ↗
8. Very-high-cycle fatigue crack initiation and propagation behaviours of magnesium alloy ZK6010.1080/02670836.2017.1407556 ↗
9. Relationship between fatigue crack initiation and activated 1 0 (1)over-bar 2 twins in as-extruded pure magnesium10.1016/j.scriptamat.2013.08.006 ↗
10. Enhanced very high cycle fatigue performance of extruded Mg-12Gd-3Y-0.5Zr magnesium alloy10.1016/j.msea.2010.12.092 ↗
11. Effect of microstructure on small fatigue crack initiation and early propagation behavior in Mg-10Gd-3Y-0.3Zr alloy10.1016/j.ijfatigue.2018.10.002 ↗
12. Fatigue behaviour and fracture mechanism of a rolled AZ31 magnesium alloy10.1016/j.ijfatigue.2004.03.015 ↗
13. Agnew · 2012
14. crack initiation and early propagation in an as-extruded Mg-10Gd-3Y-0.5Zr alloy in high cycle fatigue regime10.1016/j.msea.2018.10.015 ↗
15. The crack initiation mechanism of the forged Mg-Zn-Y-Zr alloy in the super-long fatigue life regime10.1016/j.scriptamat.2006.09.006 ↗
16. Characterization of S-N curve in gigacycle fatigue
17. Bathias · 2004
18. The role of Zr-rich cores in strength differential effect in an extruded Mg-Zn-Zr alloy10.1016/j.jallcom.2009.06.123 ↗
19. Microstructure development during extrusion in a wrought Mg-Zn-Zr alloy10.1016/j.scriptamat.2008.12.006 ↗
20. The nature and the mechanism of crack initiation and early growth for very-high-cycle fatigue of metallic materials – an overview10.1016/j.tafmec.2017.05.002 ↗
21. Effects of microstructural inhomogeneities and micro-defects on tensile and very high cycle fatigue behaviors of the friction stir welded ZK60 magnesium alloy joint10.1016/j.ijfatigue.2019.01.016 ↗
22. Mg-Zr (magnesium-zirconium)10.1007/s11669-007-9060-7 ↗
23. Characteristic zirconium-rich coring structures in Mg-Zr alloys10.1016/S1359-6462(02)00046-5 ↗
24. Very high cycle fatigue behaviors of a turbine engine blade alloy at various stress ratios10.1016/j.ijfatigue.2016.11.032 ↗
25. The effects of heat treatment on very high cycle fatigue behavior in hot-rolled WE43 magnesium10.1016/j.ijfatigue.2016.05.033 ↗
26. Statistical duplex S-N characteristics of high carbon chromium bearing steel in rotating bending in very high cycle regime10.1016/j.ijfatigue.2009.08.001 ↗
27. Dynamic recrystallization of Mg and Mg-Y alloys: crystallographic texture development10.1016/j.msea.2007.08.016 ↗
28. The role of twinning-detwinning on fatigue fracture morphology of Mg-3%Al-1%Zn alloy10.1016/j.msea.2008.04.056 ↗
29. Courtney · 2005
30. Grain-size effects on the mechanical-properties of some squeeze cast light alloys10.1007/BF01184573 ↗
31. Suresh · 1998
32. Numerical investigation of the influence of twinning/detwinning on fatigue crack initiation in AZ31 magnesium alloy10.1016/j.msea.2019.03.030 ↗
33. Twinning-detwinning behavior during fatigue-crack propagation in a wrought magnesium alloy AZ31B10.1016/j.msea.2012.06.088 ↗
34. Crack initiation mechanism of extruded AZ31 magnesium alloy in the very high cycle fatigue regime10.1016/j.msea.2008.02.003 ↗
35. Yield stress of fine grained materials10.1016/S1359-6454(98)00150-5 ↗
36. Near-threshold fatigue crack growth properties of wrought magnesium alloy AZ61 in ambient air, dry air, and vacuum10.1111/ffe.12832 ↗
37. Fatigue crack propagation and fracture mechanisms of wrought magnesium alloys in different environments10.1016/j.ijfatigue.2008.12.012 ↗
38. Investigating environmental effects on small fatigue crack growth in Ti-6242S using combined ultrasonic fatigue and scanning electron microscopy10.1016/j.ijfatigue.2014.09.007 ↗
39. Effect of structural state upon fatigue fracture in MA12 magnesium alloy in air and in vacuo10.1007/BF01523433 ↗
40. Quantitative evaluation of effects of non-metallic inclusions on fatigue strength of high strength steels. I: Basic fatigue mechanism and evaluation of correlation between the fatigue fracture stress and the size and location of non-metallic inclusions10.1016/0142-1123(89)90054-6 ↗
41. The formation mechanism of characteristic region at crack initiation for very-high-cycle fatigue of high-strength steels10.1016/j.ijfatigue.2015.11.029 ↗
42. Fatigue life and mechanistic modeling of interior micro-defect induced cracking in high cycle and very high cycle regimes10.1016/j.actamat.2018.07.036 ↗
43. Prediction of threshold value for FGA formation10.1016/j.msea.2011.05.070 ↗
44. The effect of a high vacuum environment on tensile fatigue properties of Ti-6 Al-4 V alloy10.2472/jsms.49.1148 ↗