Effect of long-period stacking ordered structure on very high cycle fatigue properties of Mg-Gd-Y-Zn-Zr alloys

WANG, Xiangyu; He, Chao; Li, Xue; Li, Lang; Liu, Yongjie; Wang, Hongtao

doi:10.1016/j.jma.2021.11.022

Cited by 9 publications

(10 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resolved shear stress at the facet plane plays an important role in the crack initiation process. Previous studies on the morphology facets in Mg and titanium alloys also reported that most of these facets are coincided with the maximum shear stress plane 9,12,13 . The facet morphologies are generally observed at the favorably oriented grains for slipping.…”

Section: Resultsmentioning

confidence: 74%

“…Previous studies on the morphology facets in Mg and titanium alloys also reported that most of these facets are coincided with the maximum shear stress plane. 9,12,13 The facet morphologies are generally observed at the favorably oriented grains for slipping. Therefore, the formation of the facet should be a result of the cyclic shear deformation of the materials in this test.…”

Section: D Morphology Of Crack Initiation and Early Propagation Areasmentioning

confidence: 99%

“…It was reported that the fatigue crack initiation mechanism changed from the twin‐induced failure mode at high stress amplitudes to the slip‐induced failure mode at low stress amplitudes 11 . As for the VHCF testing, the recent investigations on GW103K demonstrated that the fatigue cracks are initiated from the basal slip bands at very low stress amplitudes 12,13 . However, the conclusion is questionable for the basal textured Mg alloys.…”

Section: Introductionmentioning

confidence: 99%

“…11 As for the VHCF testing, the recent investigations on GW103K demonstrated that the fatigue cracks are initiated from the basal slip bands at very low stress amplitudes. 12,13 However, the conclusion is questionable for the basal textured Mg alloys. For example, Nakai et al 14 conducted fatigue experiments on AZ31 in HCF and reported no twinning occurred at the crack initiation site.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of basal texture on small crack behavior of magnesium alloy in very high cycle fatigue regime

Liu

DAI

Wang

et al. 2023

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

The behavior of small cracks in magnesium alloy is key to understanding very high cycle fatigue (VHCF), which is influenced by microstructure and deformation mechanism. This study explores how basal texture affects VHCF failure mechanisms in extruded magnesium alloys. Findings reveal that faceted and rough morphologies characterize fracture surfaces during crack initiation and early propagation, respectively. Basal texturing inhibits basal slipping during faceted‐like crack initiation while compression twinning dominates deformation during early propagation, contributing to rough zones. Stress intensity factor and plastic zone size analysis indicates significant influence of basal texture on VHCF failure mechanisms but with limited effect on stable propagation.

show abstract

Section: Resultsmentioning

confidence: 74%

Section: D Morphology Of Crack Initiation and Early Propagation Areasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of basal texture on small crack behavior of magnesium alloy in very high cycle fatigue regime

Liu

DAI

Wang

et al. 2023

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…Many mechanical parts of car engines and structures used in power plants, petrochemical industries, aerospace, etc., are subject to various mechanical and thermal oscillating loads. Thermal fatigue is the most critical cause of failure in such parts 33 – 35 . Therefore, it is important to study different methods for assessing thermal fatigue life.…”

Section: Introductionmentioning

confidence: 99%

Thermal cycles behavior and microstructure of AZ31/SiC composite prepared by stir casting

Mousavi

Sharifi

Tayebi

et al. 2022

Sci Rep

View full text Add to dashboard Cite

In the present work, the effect of thermal cycles on the physical and thermal properties of AZ31 alloy and AZ31/5wt%SiC and AZ31/10wt%SiC composites was investigated. Samples were prepared using the stir casting method and then subjected to precipitation hardening. Thermal cycles were done for as-cast and aged samples with V-shaped notch under 300, 600, and 900 heating and cooling cycles at 150 and 350 °C. The crack length (CL) was evaluated using optical microscope (OM), scanning electron microscope (SEM), and energy-dispersive scanning electron (EDS) analysis. Also, density, porosity, thermal expansion coefficient of the samples were evaluated. X-ray diffraction (XRD) analysis was employed to assess the phases present in the material. The results demonstrated that by increasing the number of thermal cycles up to 600 at 150 °C and 350 °C, the porosity and density of the as-cast and aged AZ31 alloy decreased and increased, respectively; however, the density and open porosity were remained constant for the composite samples. The crack's length enlarged with increasing the thermal cycles from 300 to 600 µm at 150 °C and 300 to 900 µm at 350 °C. It was found that the reinforcement and precipitates prevented the rapid growth of the crack in the magnesium matrix. All in All, composite and the aged samples demonstrated better thermal fatigue resistance compared with that of the unreinforced alloy and as-cast samples, respectively.

show abstract

Small fatigue crack growth in an extruded dual-phase Mg-Li alloy

WANG

DAI

et al. 2023

International Journal of Fatigue

View full text Add to dashboard Cite

Effect of long-period stacking ordered structure on very high cycle fatigue properties of Mg-Gd-Y-Zn-Zr alloys

Cited by 9 publications

References 41 publications

Effect of basal texture on small crack behavior of magnesium alloy in very high cycle fatigue regime

Effect of basal texture on small crack behavior of magnesium alloy in very high cycle fatigue regime

Thermal cycles behavior and microstructure of AZ31/SiC composite prepared by stir casting

Small fatigue crack growth in an extruded dual-phase Mg-Li alloy

Contact Info

Product

Resources

About