High-Temperature Creep-Fatigue Behavior of Alloy 617

Dewa, Rando Tungga; Park, Jeong Hun; Kim, Seon Jin; Lee, Sang Yeol

doi:10.3390/met8020103

Cited by 31 publications

(5 citation statements)

References 26 publications

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“…The composition (wt.%) of the commercial-grade Alloys used in this study is shown in Table 1. The as-received microstructure of the alloy 617 is shown in Figure 1, showcasing a fully austenitic face-centered cubic (FCC) structure known for maintaining superior mechanical properties at high temperatures (Dewa et al, 2018a). Figure 2 shows the monotonic stress-strain behavior of Alloy 617, with FCC matrix, mainly consisting of nickel, cobalt, iron, chromium, and molybdenum.…”

Section: Methods and Proceduresmentioning

confidence: 99%

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Cyclic Strain Rate Dependent Low-Cycle Fatigue Behavior of Alloy 617

Dewa,

Aulia,

Kim

et al. 2023

IJTech

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Alloy 617 is identified as a potential material for defense applications, particularly in military air platforms. Therefore, this study aims to examine the impact of strain rate on Alloy 617 properties during low-cycle fatigue (LCF) at room temperature (RT). LCF life properties and damage mechanism of alloy 617 are examined across a strain rate range of (5x10 -4 ~ 10 -2 s -1 ) in a fullyreversed controlled total strain range of 1.2%. Slow strain rate test (SSRT) is found to be a costeffective method for assessing the material capability to respond to environmental interference. This study shows that LCF life of Alloy 617 is strongly influenced by the time-dependent mechanism, in terms of SSRT. The relationship between total strain, plastic strain, and time to failure with strain rates are established and expressed using the power law function to describe the fatigue life. Fractured specimens undergo metallography examination using an electron microscope, and fractography is discussed to differentiate the impact of SSRT on the physical damage characteristics under LCF loadings. LCF resistance of Alloy 617 is found to be time-dependent. Based on the results, it is recommended that the factor of safety must be considered in the designing phase to evaluate the fatigue life.

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Section: Methods and Proceduresmentioning

confidence: 99%

“…Additionally, it provides good properties for components of power generating plants, gas turbines, and high temperature superior required applications. Alloy is now being widely used for high-temperature applications (Dewa et al, 2018a;Dewa et al, 2018b;Dewa et al, 2016;Ekaputra et al, 2016;Redy et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Cyclic Strain Rate Dependent Low-Cycle Fatigue Behavior of Alloy 617

Dewa,

Aulia,

Kim

et al. 2023

IJTech

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“…Where, P describes the combined effect of temperature and time and is a stress-dependent quantity, T is the operating temperature and t is the limit creep time 12 .…”

Section: Build a Life Prediction Modelmentioning

confidence: 99%

Design of digital twin system for creep-fatigue life management

Chen,

Lu,

Xie

et al. 2023

Eighth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2023)

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“…Several parametric models have been proposed for predicting the long-term failure time based on short-term measurement data [19][20][21]. The LMP model and the Monkman-Grant model are widely used for the estimation of the creep-buckling failure time [12,[22][23][24]. These models are both based on experimental measurements, but the Monkman-Grant model needs the minimum strain rate of the specimen.…”

Section: Empirical Correlation: Lmpmentioning

confidence: 99%

Creep Buckling of 304 Stainless-Steel Tubes Subjected to External Pressure for Nuclear Power Plant Applications

Okamoto

Kasahara

2019

Metals

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The creep-buckling behaviors of cylindrical stainless-steel tubes subjected to radial external pressure load at elevated temperatures—800, 900, and 1000 °C—were experimentally investigated. Prior to the creep-buckling tests, the buckling pressure was measured under each temperature condition. Then, in creep-buckling experiments, the creep-buckling failure time was measured by reducing the external pressure load for two different tube specimens—representing the first and second buckling modes—to examine the relationship between the external pressure and the creep-buckling failure time. The measured failure time ranged from <1 min to <4 h under 99–41% loading of the buckling pressure. Additionally, an empirical correlation was developed using the Larson–Miller parameter model to predict the long-term buckling time of the stainless-steel tube column according to the experimental results. Moreover, the creep-buckling processes were recorded by two high-speed cameras. Finally, the characteristics of the creep buckling under radial loading were discussed with regard to the geometrical imperfections of the tubes and the material properties of the stainless steel at the high temperatures.

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High-Temperature Creep-Fatigue Behavior of Alloy 617

Cited by 31 publications

References 26 publications

Cyclic Strain Rate Dependent Low-Cycle Fatigue Behavior of Alloy 617

Cyclic Strain Rate Dependent Low-Cycle Fatigue Behavior of Alloy 617

Design of digital twin system for creep-fatigue life management

Creep Buckling of 304 Stainless-Steel Tubes Subjected to External Pressure for Nuclear Power Plant Applications

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