Effect of ratchet strain on fatigue and creep–fatigue strength of Mod.9Cr–1Mo steel

Ando, Makoto; Isobe, Nobuhiro; Kikuchi, Kôichi; Enuma, Yasuhiro

doi:10.1016/j.nucengdes.2012.02.017

Cited by 11 publications

(12 citation statements)

References 17 publications

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“…So-called "fatigue/creep-fatigue tests with superimposed strain" were carried out on mod. 9Cr-1Mo steel at 550 and 450 °C [28], which were essentially the same as the "strain-controlled ratcheting tests". However, stress-controlling still plays a large part in ratcheting research.…”

Section: Fig 21 Generic Strain Path For a Cyclic Tension Testmentioning

confidence: 92%

“…9Cr-1Mo FM steel at RT has been reported, this shall be carried out in the current work. On the other hand, although there have been reports such as [7,[24][25][26][27][28] about the ratcheting of FM steel at high temperatures, only Yaguchi and Takahashi [7,26] have reported about the ratcheting at 550 °C. As mentioned in Section 2.1, some tests reported in [26] were still doubtful, since ratcheting tests performed with = 400 MPa contradict the ultimate tensile strength of 374 MPa of T91 reported in SCK•CEN [55], since both materials mentioned in [26] and [55] are mod.…”

Section: Materials and Approachmentioning

confidence: 98%

“… Austenitic steels such as 316L [9][10][11], 316LN [12], 304 [13][14][15][16][17][18][19][20], 304L [21], 304LN [22] (304L means "low carbon", 304LN means "low carbon and high nitrogen" [23]);  Ferritic steels [24][25][26][27][28];  Carbon steels (CS) 40Cr [29], 42CrMo [18,30,31], 16MnR [32], X42 and X56 [33], 20 CS [34,35], 45 CS [36];  Other steels such as SA333C-Mn steels [37], Interstitial-Free Steel [38];  Other metallic materials, such as zirconium alloys [39], pure titanium [40], titanium alloys [41], NiTi shape memory alloy [42,43];  Ceramic matrix composites [44]; and  Polymers such as polytetrafluoroethylenes (PTFE) [45], polypropylene [46], polyacetal/polyoxymethylene [47], epoxy resin [48] etc.…”

Section: ∫ ̇mentioning

confidence: 99%

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Characterization and modeling of the ratcheting behavior of the ferritic–martensitic steel P91

Zhang

Aktaa

2016

Journal of Nuclear Materials

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Section: Fig 21 Generic Strain Path For a Cyclic Tension Testmentioning

confidence: 92%

Section: Materials and Approachmentioning

confidence: 98%

Section: ∫ ̇mentioning

confidence: 99%

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Characterization and modeling of the ratcheting behavior of the ferritic–martensitic steel P91

Zhang

Aktaa

2016

Journal of Nuclear Materials

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“… Austenitic steels such as 316L [10][11][12], 316LN [13], 304 [14][15][16][17][18][19][20][21], 304L [22], 304LN [23]  Ferritic steels [24][25][26][27][28];…”

Section: Introductionmentioning

confidence: 99%

Ratcheting and fatigue behavior of Eurofer97 at high temperature, part 1: Experiment

Zhang

Walter

Aktaa

2020

Fusion Engineering and Design

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Eurofer97 is considered as one of the structural material candidates for in-vessel components of future fusion reactor. Due to frequent startups, shutdowns and load changes in reactor, the material is under complex cyclic loadings. This work investigates the mechanical behavior of Eurofer97 under various cyclic loadings, including strain-controlled LCF tests and stress-controlled ratcheting tests at high temperatures 450°C and 550°C. Various influencing factors on ratcheting, such as stress magnitude, stress ratio and stress rate are evaluated. Since Eurofer97 is developed based on conventional grade 91 ferritic martensitic (FM) steels, corresponding data of mod.9Cr-1Mo FM steel P91 are also presented for comparison.

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“…Recently, the ratcheting fatigue of specific engineering materials was extensively studied in [15][16][17][18][19][20][21][22][23][24][25][26] , which is generally modelled by cyclic plasticity hardening rules. Wang et al 15 studied the effects of the pre-strain and mean stress on the cyclic deformation and fatigueratcheting behaviour of Z2CN18.10 steel.…”

mentioning

confidence: 99%

Mean stress and ratcheting corrections in fatigue life prediction of metals

Zhu

Lei

Wang

2017

Fatigue Fract Eng Mat Struct

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Ratcheting occurs easily because of the presence of mean stress during the stress‐control fatigue of engineering components. For ductility exhaustion dominated fatigue failure, a new fatigue life prediction model is developed by introducing the mean ratcheting strain rate to incorporate the effects of ratcheting and mean stress on fatigue life. The prediction accuracy of the proposed model was compared with that of the generalised damage parameter, Xia–Kujawski–Ellyin, Walker and Goswami models. Specifically, the model predictions and tested lives were compared using nine sets of experimental data from the literature. In the statistical analysis of these five models, the proposed model provides the highest accuracy and robust life predictions with the lowest model prediction errors.

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Effect of ratchet strain on fatigue and creep–fatigue strength of Mod.9Cr–1Mo steel

Cited by 11 publications

References 17 publications

Characterization and modeling of the ratcheting behavior of the ferritic–martensitic steel P91

Characterization and modeling of the ratcheting behavior of the ferritic–martensitic steel P91

Ratcheting and fatigue behavior of Eurofer97 at high temperature, part 1: Experiment

Mean stress and ratcheting corrections in fatigue life prediction of metals

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