S–N Fatigue and Fatigue Crack Propagation Behaviors of X80 Steel at Room and Low Temperatures

Jung, Dae-Ho; Kwon, Jong-Hee; Woo, Nam-Sub; Kim, Young‐Ju; Goto, Masahiro; Kim, Sangshik

doi:10.1007/s11661-013-2012-4

Cited by 53 publications

(34 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since yield strength is the indicative of the resistance to slip deformation inducing crack nucleation on smooth surface, it is therefore one of the most important parameters affecting the HCF resistance (Jung et al 2014;Jeong et al 2013). As in the case of tensile behavior, the microstructure can have a significant influence on the HCF resistance of Ti64 alloy.…”

Section: Methodsmentioning

confidence: 99%

High cycle fatigue and fatigue crack propagation behaviors of β-annealed Ti-6Al-4V alloy

Jeong

Kwon

Goto

et al. 2017

Int J Mech Mater Eng

Self Cite

View full text Add to dashboard Cite

Background: The effect of β annealing on high cycle fatigue (HCF) and fatigue crack propagation (FCP) behaviors of Ti64 alloy were examined, and the results were compared to those of mill-annealed counterpart. Methods: The tensile tests, stress-controlled HCF tests, and FCP tests were conducted, and the fractographic and micrographic analyses were performed before and after the tests. Results: The β-annealed Ti64 specimen showed inferior HCF properties as compared to the mill-annealed counterpart, as a result of lower yield strength. On the other hand the resistance to FCP of β-annealed Ti64 specimen was higher than that of mill-annealed counterpart in low and intermediate ΔK regime. Conclusions: Relatively easy fatigue crack initiation at the colony boundaries of β-annealed Ti64 specimen reduce the resistance to HCF. The resistance to FCP of β-annealed Ti64 specimen increased significantly particularly in low ΔK regime along with severe crack branching and deflection.

show abstract

Section: Methodsmentioning

confidence: 99%

High cycle fatigue and fatigue crack propagation behaviors of β-annealed Ti-6Al-4V alloy

Jeong

Kwon

Goto

et al. 2017

Int J Mech Mater Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…Figure 8 shows the da/dN-K curves of X80 WM specimens in air and ASW under a CP potential of -850 mV SCE . Previously, it was reported that the FCP rates of the X80 BM and the WM specimens in air were comparable with each other over the entire K regime [38]. It was also proposed that the residual stress played an important role in determining the FCP resistance of X80 welds, despite the subtle difference in the effective grain size.…”

Section: Resultsmentioning

confidence: 88%

“…Fine transgranular facets were shown on the fracture surface of the specimen tested in air. The FCP behavior of X80 specimens, including BM and WM, in air is described in reference [38]. After removing the calcareous deposit, anodic dissolution was observed on the faceted fracture surface of the X80 specimen tested in ASW at an anodic potential, often revealing the islands of MA.…”

Section: Resultsmentioning

confidence: 99%

Effect of applied potential on fatigue crack propagation behavior of API X80 steel in seawater

et al. 2014

Self Cite

View full text Add to dashboard Cite

In the present study, the fatigue crack propagation (FCP) tests were conducted on X80 steel in air and artificial seawater (ASW) under various applied potentials to establish optimum and safe working limits of cathodic protection (CP). The slow strain rate test (SSRT) was also conducted on the X80 BM specimens in ASW under CP potential to identify the susceptibility of hydrogen affecting the FCP behavior. The CP potential of -850 and -1,050 mV SCE suppressed the environmental effect of seawater on the FCP behavior of X80 BM and WM specimens, showing almost identical da/dN-K curves for both air and ASW environments. The SSRT in ASW under CP potential of -1,050 mV SCE suggested that the X80 BM specimen steel is susceptible to hydrogen embrittlement, but the effect of hydrogen was believed to be marginal in affecting the FCP behavior of the X80 specimens at a loading frequency of 10 Hz. The FCP behavior of high strength X80 steel is discussed based on the fractographic observation to understand the FCP mechanism in seawater under various CP potentials.

show abstract

“…To overcome the limitation, new high-manganese (Mn) austenitic steels are being developed, offering high yield strength and low cost [14,15]. High-Mn steels with Mn content of over 22% are, for example, are known to have promising low temperature tensile properties and fracture toughness [4,5,16]. In the near future, they are expected to replace expensive nickel (Ni)-containing steels used in LNG tankage and offshore structures in arctic environment [14,15,17].…”

Section: Introductionmentioning

confidence: 99%

“…The structures made of high-Mn steels may experience a variety of cyclic loading spectrums. The total life of such cyclic loaded component containing a crack-like flaw depends on the propagation rate of flaw from its original size to a critical size for final fracture and the major part of life is expended in the crack extension in low propagation rate regime [5,16,18]. It is therefore of practical importance to understand the fatigue crack propagation (FCP) behavior of high-Mn steels, particularly in the regime of low stress intensity factor range (K).…”

Section: Introductionmentioning

confidence: 99%

Fatigue crack propagation behavior of Fe24Mn steel weld at 298 and 110 K

et al. 2015

Self Cite

View full text Add to dashboard Cite

The fatigue crack propagation (FCP) tests were conducted on Fe24Mn steel in the region of base metal (BM), weld metal (WM) and fusion line (FL) at 298 and 110 K. The FCP rates of Fe24Mn specimens in the region of BM, WM and FL were greatly decreased, while no notable difference in the fracture mode was observed, with decreasing temperature from 298 to 110 K. The FCP rates of Fe24Mn WM and FL specimens were slightly lower than those of BM specimen at both room and cryogenic temperatures. The SEM fractographic analyses suggested that each specimen showed the transgranular facets at both temperatures in low and intermediate K regimes. However, the morphological details varied depending on the region of weld and testing temperature. Relatively large sized facets were observed for the WM specimen with the columnar grain boundary playing the same role as the grain boundary in the BM and the FL specimens in the near-threshold K regime. The FCP behavior of Fe24Mn steel in the region of BM, WM and FL is discussed at 298 and 110 K based on the fractographic and micrographic observation.

show abstract

S–N Fatigue and Fatigue Crack Propagation Behaviors of X80 Steel at Room and Low Temperatures

Cited by 53 publications

References 24 publications

High cycle fatigue and fatigue crack propagation behaviors of β-annealed Ti-6Al-4V alloy

High cycle fatigue and fatigue crack propagation behaviors of β-annealed Ti-6Al-4V alloy

Effect of applied potential on fatigue crack propagation behavior of API X80 steel in seawater

Fatigue crack propagation behavior of Fe24Mn steel weld at 298 and 110 K

Contact Info

Product

Resources

About