Dislocation substructures at fatigue crack tips of 304 stainless steel cycled in air or vaccum

McEvily, A.J.; González, J. L. García; Hallen, J.M.

doi:10.1016/1359-6462(96)00210-2

Cited by 9 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The authors rationalized the crack growth transition with a transition from an opening mode to a shear mode of fracture, while the plastic zone had no influence on this transition [ 36 ]. McEvily et al [ 37 , 38 ] investigated the cyclic crack growth behavior of an AISI 304 stainless steel in air and in vacuum. They also reported on the kink and plateau-like behavior, but only for tests performed in ambient air [ 37 ].…”

Section: Resultsmentioning

confidence: 99%

“…The related elementary mechanisms obviously depend on further factors such as material composition, loading frequency, or temperature [ 28 ]. In the studies of McEvily et al [ 37 , 38 ], the detrimental effect stemming from atmosphere seemed to dominate. Other authors also reported a decreased threshold value for austenitic stainless steels in environments like hydrogen, moist air, or chloride solutions [ 44 , 45 ].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion

et al. 2021

View full text Add to dashboard Cite

The present study analyzes the cyclic crack propagation behavior in an austenitic steel processed by electron beam powder bed fusion (PBF-EB). The threshold value of crack growth as well as the crack growth behavior in the Paris regime were studied. In contrast to other austenitic steels, the building direction during PBF-EB did not affect the crack propagation rate, i.e., the crack growth rates perpendicular and parallel to the building direction were similar due to the isotropic microstructure characterized by equiaxed grains. Furthermore, the influence of significantly different building parameters was studied and, thereby, different energy inputs causing locally varying manganese content. Crack growth behavior was not affected by these changes. Even a compositional gradation within the same specimen, i.e., crack growth through an interface of areas with high and areas with low manganese content, did not lead to a significant change of the crack growth rate. Thus, the steel studied is characterized by a quite robust cyclic crack growth behavior independent from building direction and hardly affected by typical parameter deviations in the PBF-EB process.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The trend in the fatigue crack growth behavior can be explained with the mechanisms of environmentally assisted damage at the crack tip. The acceleration of the crack growth rate in air can be attributed to the adsorption of gaseous species by the freshly exposed bare metal at the crack tip [6]. At lower DJ, where the crack is growing slowly, there is enough time for the gaseous species to adsorb onto the freshly exposed metal surface at the crack tip.…”

Section: Fatigue Crack Growth Test and Fractographymentioning

confidence: 99%

Vacuum crack growth behavior of austenitic stainless steel under fatigue loading

2011

View full text Add to dashboard Cite

The fatigue crack growth behavior of an austenitic stainless steel in a vacuum environment has been studied. Fatigue crack growth tests were performed with the compact tension specimens in laboratory air and vacuum, and the environmental effect on the crack growth behavior was examined. The crack growth rate data were expressed in terms of the J-integral range during fatigue loading, while an elastic-plastic finite element analysis was employed to calculate the J-integral range. The fractographic examinations were also carried out to assess the crack growth mechanisms and correlate with fatigue characteristics. The results show an accelerated fatigue crack growth in air compared to that in vacuum and this environmental effect depends on the load ratio.

show abstract

“…Fatigue properties in metal are strongly dependent on testing atmospheres, e.g. fatigue damaged surfaces exhibit different features of microstructures in air from those in vacuum [1][2][3][4][5][6][7][8]. Numerous studies have been published on metals and alloys possessing a face-centered cubic (fcc) and bodycentered cubic (bcc) structures.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Damage Mechanism of Titanium in Inert Environments

Zahari

Yussof

Sugano

2012

AMM

View full text Add to dashboard Cite

The fatigue damage of titanium has been studied on thin plate specimens subjected to alternating plane bending in argon gas. Fatigue strength in argon gas at Nf = 108 cycles was obtained to be 102 MPa. Fatigue behavior of titanium in argon gas has been attributed to the degradation of grain boundary cohesion with argon gas atoms/molecules. Fatigue cracks were propagated partly in intergranular mode. It has been plausible that argon gas atoms/molecules could penetrate into the distorted regions close to grain boundary through lattice defects and degrade grain boundary cohesion. Grain boundaries have been preferentially damaged in argon gas. The results in argon gas have been compared with those obtained in vacuum and in air.

show abstract

Dislocation substructures at fatigue crack tips of 304 stainless steel cycled in air or vaccum

Cited by 9 publications

References 5 publications

Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion

Cyclic Crack Growth in Chemically Tailored Isotropic Austenitic Steel Processed by Electron Beam Powder Bed Fusion

Vacuum crack growth behavior of austenitic stainless steel under fatigue loading

Fatigue Damage Mechanism of Titanium in Inert Environments

Contact Info

Product

Resources

About