Characterization of high temperature deformation behavior of INCONEL 617

Rahman, Md. Lutfor; Priyadarshan, G.; Raja, Krishnan S.; Nesbitt, Carl C.; Misra, M.

doi:10.1016/j.mechmat.2008.10.003

Cited by 76 publications

(22 citation statements)

References 28 publications

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“…Hardness testing was also performed on the four crept samples and the average hardness is shown in Table 4. The high temperature exposure causes the as-received microstructure to evolve [9][10][11][12][16][17][18][19][20][21][22]. With the exception of µ phase, which only precipitates in the samples exposed at temperatures equal or higher than 700ºC, MX, M 23 C 6 , M 6 C and γ' are encountered in all the crept samples.…”

Section: Microstructural Analysis Of Alloy In617 Crept Specimensmentioning

confidence: 99%

Characterisation of microstructure and creep properties of alloy 617 for high-temperature applications

Martino

Faulkner

Hogg

et al. 2014

Materials Science and Engineering: A

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Current energy drivers are pushing research in power generation materials towards improved efficiency and improved environmental impact. In the context of new generation ultra-supercritical (USC) power plant , this is represented by increased efficiency, service temperature reaching 750 o C, pressures in the range of 35 -37.5 MPa and associated carbon capture technology. Ni base alloys are primary candidate materials for long term high temperature applications such as boilers. The transition from their current applications, which have required lower exposure times and milder corrosive environments, requires the investigation of their microstructural evolution as a function of thermo-mechanical treatment and simulated service conditions, coupled with modelling activities that are able to forecast such microstructural changes. The lack of widespread microstructural data in this context for most nickel base alloys makes this type of investigation necessary and novel. Alloy INCONEL 617 is one of the Ni-base candidate materials. The microstructures of four specimens of this material crept at temperatures in the 650 o C-750 o C range for up to 20000 h have been characterised and quantified. Grain structure, precipitate type and location, precipitate volume fraction, size and inter-particle spacing have been determined. The data obtained are used both as input for and validation of a microstructurally-based CDM model for forecasting creep properties.

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Section: Microstructural Analysis Of Alloy In617 Crept Specimensmentioning

confidence: 99%

Characterisation of microstructure and creep properties of alloy 617 for high-temperature applications

Martino

Faulkner

Hogg

et al. 2014

Materials Science and Engineering: A

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“…Experience with nickel alloy weldments in structural applications suggests that most cases of high temperature fatigue failures occur at the weldments or in the heat affected zone (HAZ) [6]. Although Alloy 617 has many superior properties, numerous researchers have reported that the fatigue life varies widely at high temperature and it is generally found that the weldment specimens have a lower fatigue life compared to the base metal, although only limited data were available on the weldments material [5][6][7][8][9][10][11]. A draft Code Case was developed to qualify the Alloy 617 for nuclear service; the need for fatigue data, such as the influence of strain ranges, strain rate, and temperature at thermally induced strain rates in the IHX parent material and weldments material is necessary to predict the lifetime of the reactor components.…”

Section: Introductionmentioning

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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“…[1][2][3]. It is well-known that M23C6 carbide network is formed along grain boundaries during long-term exposure at elevated temperature.…”

Section: Introductionmentioning

confidence: 99%

“…Md. S. Rahman et al [1] studied the creep performance of Inconel 617 in solution annealed condition at 1,180°C for 1 h followed with creep testing at 600 and 800°C. The results indicated that the elongation decreased with increasing in the temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on Properties of INCONEL 617 Investigated in Accelerated Creep Testing

Phuraya¹,

Phung-On²,

Srithorn³

2017

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Abstract. An accelerated creep test was implemented to study the effects of heat treatment on the creep properties of INCONEL 617. Three heat treatment conditions were set on the test specimens, including 1) as-received, 2) aged as the simulation of service conditions at 650°C for 1,000 h and 3) solutionised. The accelerated creep test was performed at 700, 750, 800 and 900°C with applied stress at 80% and 90% of the yield stress (YS) at tested temperatures. The results were analysed for both time to rupture and % RA, which showed that there was a significant drop in time to rupture and % RA at 750°C. Subsequently, the % RA increased while the time to rupture gradually decreased. The Larson Miller curve for all heat treatment conditions could be plotted with an interest in the presence of an intersection zone. This indicated the possibility of failure behaviour changes from a creep mode to an overload mode at low applied loads to high applied loads, respectively.

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Characterization of high temperature deformation behavior of INCONEL 617

Cited by 76 publications

References 28 publications

Characterisation of microstructure and creep properties of alloy 617 for high-temperature applications

Characterisation of microstructure and creep properties of alloy 617 for high-temperature applications

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

Effect of Heat Treatment on Properties of INCONEL 617 Investigated in Accelerated Creep Testing

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