Temperature effect on the creep behavior of alloy 617 in air and helium environments

Kim, Woo‐Gon; Park, Jae Young; Lee, Gyeong-Geun; Hong, Sung-Deok

doi:10.1016/j.nucengdes.2013.11.050

Cited by 24 publications

(11 citation statements)

References 6 publications

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“…In a previous work [15], it was stated that internal sub layers consisting of (Al-rich and carbides) were formed by the diffusion of oxygen through the surface oxide and matrix just beneath the Cr2O3 layer. The Cr2O3 layer is of the anion diffusion type, which prevents further diffusion of oxygen.…”

Section: Camentioning

confidence: 99%

Understanding Low Cycle Fatigue Behavior of Alloy 617 Base Metal and Weldments at 900 °C

Dewa

Kim

et al. 2016

Metals

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Abstract:In order to better understand the high temperature low cycle fatigue behavior of Alloy 617 weldments, this work focuses on the comparative study of the low cycle fatigue behavior of Alloy 617 base metal and weldments, made from automated gas tungsten arc welding with Alloy 617 filler wire. Low cycle fatigue tests were carried out by a series of fully reversed strain-controls (strain ratio, R ε =´1), i.e., 0.6%, 0.9%, 1.2% and 1.5% at a high temperature of 900˝C and a constant strain rate of 10´3/s. At all the testing conditions, the weldment specimens showed lower fatigue lives compared with the base metal due to their microstructural heterogeneities. The effect of very high temperature deformation behavior regarding cyclic stress response varied as a complex function of material property and total strain range. The Alloy 617 base weldments showed some cyclic hardening as a function of total strain range. However, the Alloy 617 base metal showed some cyclic softening induced by solute drag creep during low cycle fatigue. An analysis of the low cycle fatigue data based on a Coffin-Manson relationship was carried out. Fracture surface characterizations were performed on selected fractured specimens using standard metallographic techniques.

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Section: Camentioning

confidence: 99%

Understanding Low Cycle Fatigue Behavior of Alloy 617 Base Metal and Weldments at 900 °C

Dewa

Kim

et al. 2016

Metals

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“…The creep rupture elongation of Alloy 617 and Haynes 230 and P92 steel tends to increase with increased applied stress 45–47 . Figure 9 depicts the relation between CFED and applied stress of Alloy 617 at 850°C, 46 a liner relationship is observed. In this paper, the CFED is also assumed to be a linear function of the applied stress 40 .…”

Section: Resultsmentioning

confidence: 94%

“…The cyclic stress–strain data of Alloy 617 at 850°C 36,38,43 and 950°C, 36 Haynes 230 at 850°C 43 and P92 steel at 600°C 44 are also collected to determine the model parameters. The high temperature creep properties of Haynes 230, 45 Alloy 617 46 and P92 steel 47 are used to evaluate the creep damage. The elastic modulus of alloy 617 at 950°C and P92 steel at 600°C is 136GPa 42 and 134.5GPa, 48 respectively.…”

Section: Resultsmentioning

confidence: 99%

An efficient fatigue and creep‐fatigue life prediction method by using the hysteresis energy density rate concept

Wang

2020

Fatigue Fract Eng Mat Struct

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Fatigue damage, time-dependent creep damage and their interaction are considered as the main failure mechanisms for many high temperature structural components. A generalized methodology for predicting both the high temperature low cycle fatigue (HTLCF) and creep-fatigue lives by using the hysteresis energy density rate (HEDR) and fatigue damage stress concepts was proposed.Experimental data for HTLCF and creep-fatigue in Alloy 617, Haynes 230 and

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“…It can be seen from Table 1 that different loading waveforms were incorporated in the present investigation. The creep data and tensile properties of P91 steel [40,44], Inconel 625 [45,46], and Alloy 617 [43,47] were also collected for calculating creep and virtual elastic damages. Since the elastic modules of Inconel 625 at 815 • C was not available in [41], the elastic modulus was assumed to be a linear function of temperature, as shown in Figure 2 [48].…”

Section: Data Collectionmentioning

confidence: 99%

A New 3D Creep-Fatigue-Elasticity Damage Interaction Diagram Based on the Total Tensile Strain Energy Density Model

Wang

Zhang

Wang

2020

Metals

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Fatigue damage, creep damage, and their interactions are the critical factors in degrading the integrity of most high-temperature engineering structures. A reliable creep-fatigue damage interaction diagram is a crucial issue for the design and assessment of high-temperature components used in power plants. In this paper, a new three-dimensional creep-fatigue-elasticity damage interaction diagram was constructed based on a developed life prediction model for both high-temperature fatigue and creep fatigue. The total tensile strain energy density concept is adopted as a damage parameter for life prediction by using the elastic strain energy density and mean stress concepts. The model was validated by a great deal of data such as P91 steel at 550 °C, Haynes 230 at 850 °C, Alloy 617 at 850 and 950 °C, and Inconel 625 at 815 °C. The estimation values have very high accuracy since nearly all the test data fell into the scatter band of 2.0.

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Temperature effect on the creep behavior of alloy 617 in air and helium environments

Cited by 24 publications

References 6 publications

Understanding Low Cycle Fatigue Behavior of Alloy 617 Base Metal and Weldments at 900 °C

Understanding Low Cycle Fatigue Behavior of Alloy 617 Base Metal and Weldments at 900 °C

An efficient fatigue and creep‐fatigue life prediction method by using the hysteresis energy density rate concept

A New 3D Creep-Fatigue-Elasticity Damage Interaction Diagram Based on the Total Tensile Strain Energy Density Model

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