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in subjects: "Inconel 600"

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Stress corrosion cracking behavior of Alloy 600 in high temperature water

SCC susceptibility of Alloy 600 in deaerated water at 360 C (statically loaded U-bend specimens) is dependent on microstructure and whether the material was cold-worked and annealed (CWA) or hot-worked and annealed (HWA). All cracking was intergranular, and materials lacking grain boundary carbides were most susceptible to SCC initiation. CWA tubing materials are more susceptible to SCC initiation than HWA ring-rolled forging materials with similar microstructures (optical metallography). In CW… more

Date: July 1, 1995

Creator: Webb, G.L. & Burke, M.G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Modeling of stress distributions on the microstructural level in Alloy 600

Stress distribution in a random polycrystalline material (Alloy 600) was studied using a topologically correct microstructural model. Distributions of von Mises and hydrostatic stresses at the grain vertices, which could be important in intergranular stress corrosion cracking, were analyzed as functions of microstructure, grain orientations and loading conditions. Grain size, shape, and orientation had a more pronounced effect on stress distribution than loading conditions. At grain vertices th… more

Date: April 1995

Creator: Kozaczek, K. J.; Petrovic, B. G.; Ruud, C. O. & Mcllree, A. R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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A new metallographic procedure for edge retention of enclosed surfaces

Utilization of a low melting point, metallic alloy that on solidification has provided a reproducible means of preserving edges and accurately measuring deposits on surfaces mounted for metarographic study. In normal laboratory practice the electrically conducting mounting material generates no hazardous waste, needs no special equipment to prepare and is available commercially at a relatively reasonable price. Previous standard edge preservation techniques were found to be 90% inefficient from… more

Date: August 1, 1994

Creator: Katz, O. M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Two-parameter Failure Model Improves Time-independent and Time-dependent Failure Predictions

A new analytical model for predicting failure under a generalized, triaxial stress state was developed by the author and initially reported in 1984. The model was validated for predicting failure under elevated-temperature creep-rupture conditions. Biaxial data for three alloy steels, Types 304 and 316 stainless steels and Inconel 600, demonstrated two to three orders of magnitude reduction in the scatter of predicted versus observed creep-rupture times as compared to the classical failure mode… more

Date: January 27, 2004

Creator: Huddleston, R L

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Application of the normalization data analysis technique for single specimen R-curve determination

The authors conclude that the normalization technique for single specimen R-curve and J{sub IC} determination can be very effective. Much like EPD, this technique requires some user interpretation/judgement during data analysis and may be difficult to standardize or fully automate even with strict analysis rules.

Date: March 1, 1999

Creator: Porr, W. C. & Mills, W. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Fracture toughness of Alloy 600 and EN82H weld in air and water

The fracture toughness of Alloy 600 and its weld, EN82H, was characterized in 54 C to 338 C air and hydrogenated water. Elastic-plastic J{sub IC} testing was performed due to the inherent high toughness of these materials. Alloy 600 exhibited excellent fracture toughness under all test conditions. While EN82H welds displayed excellent toughness in air and high temperature water, a dramatic toughness degradation occurred in water at temperatures below 149 C. Comparison of the cracking response i… more

Date: June 1, 1999

Creator: Mills, W. J. & Brown, C. M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Primary water stress corrosion cracking of Alloy 600: Effects of processing parameters

Correlations of stress corrosion cracking (SCC) data in deaerated water with temperature, stress, metallography, and processing for laboratory test specimens are presented. Initiation time data show that a low temperature anneal and resulting absence of grain boundary carbides result in a material having increased susceptibility to SCC. Data also show that hot worked and annealed Alloy 600 is more resistant than cold worked and annealed material, both having carbide decorated grain boundaries. … more

Date: October 22, 1993

Creator: Seman, D. J.; Webb, G. L. & Parrington, R. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Fracture behavior of nickel-based alloys in water

The cracking resistance of Alloy 600, Alloy 690 and their welds, EN82H and EN52, was characterized by conducting J{sub IC} tests in air and hydrogenated water. All test materials displayed excellent toughness in air and high temperature water, but Alloy 690 and the two welds were severely embrittled in low temperature water. In 54 C water with 150 cc H{sub 2}/kg H{sub 2}O, J{sub IC} values were typically 70% to 95% lower than their air counterparts. The toughness degradation was associated with… more

Date: August 1, 1999

Creator: Mills, W. J. & Brown, C. M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

A joint computational and experimental study to evaluate Inconel-sheathed thermocouple performance in flames.

A joint experimental and computational study was performed to evaluate the capability of the Sandia Fire Code VULCAN to predict thermocouple response temperature. Thermocouple temperatures recorded by an Inconel-sheathed thermocouple inserted into a near-adiabatic flat flame were predicted by companion VULCAN simulations. The predicted thermocouple temperatures were within 6% of the measured values, with the error primarily attributable to uncertainty in Inconel 600 emissivity and axial conduct… more

Date: September 1, 2005

Creator: Brundage, Aaron L.; Nicolette, Vernon F.; Donaldson, A. Burl; Kearney, Sean Patrick & Gill, Walter

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Proceedings of the USNRC/EPRI/ANL heated crevice seminar.

An international Heated Crevice Seminar, sponsored by the Division of Engineering Technology, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, Argonne National Laboratory, and the Electric Power Research Institute, was held at Argonne National Laboratory on October 7-11, 2002. The objective of the seminar was to provide a working forum for the exchange of information by contributing experts on current issues related to corrosion in heated crevices, particularly as it r… more

Date: August 31, 2003

Creator: Park, J. Y.; Fruzzetti, K.; Muscara, J.; Diercks, D. R.; Technology, Energy; EPRI et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Assessment of an improved multiaxial strength theory based on creep-rupture data for Inconel 600

A new multiaxial strength theory incorporating three independent stress parameters was developed and reported by the author in 1984. It was formally incorporated into ASME Code Case N47-29 in 1990. The new theory provided significantly more accurate stress-rupture life predictions than obtained using the classical theories of von Mises, Tresca, and Rankins (maximum principal stress), for Types 304 and 316 stainless steel tested at 593 and 600{degrees}C respectively under different biaxial stres… more

Date: June 1, 1993

Creator: Huddleston, R. L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Effects of hydrogen on electropotential monitoring of stress corrosion crack growth

Electropotential monitoring (EPM) has a crack growth measurement resolution that is an order of magnitude greater than methods that rely on crack mouth opening displacement. However, two phenomena have been identified that compromise the accuracy of the EPM technique. Coolant hydrogen concentrations above those needed to chemically reduce nickel oxide to metallic nickel cause EPM to underestimate the true crack length. The metallic nickel provides an electrical conduction path at contact points… more

Date: August 1, 1997

Creator: Thompson, C.D.; Carey, D.M. & Perazzo, N.L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Modifications in the grain boundary character distribution in FCC materials through thermomechanical processing

Recently, a body of work has emerged that indicates the potential to improve certain materials' properties through thermomechanical processing (TMP) solely by controlling grain misorientations. The grain boundary character distribution (GBCD) is defined as a microstructural property that describes the proportions of ''special'' and ''random'' boundaries with reference to the coincident site lattice model. Most of the ''optimization'' treatments reported in the literature have been performed on … more

Date: March 1999

Creator: King, W. E.; Kumar, M. & Schwartz, A. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Rotating field eddy current probe for characterization of cracking in non-magnetic tubing

A rotating field eddy current probe was built and tested for use in small diameter, non-magnetic tubing. The rotating field probe is a driver/pickup style with two orthogonally wound drive coils and a pancake pickup coil. The driver coils are excited by two sine waves 90{degree} out of phase with each other. The physical arrangement of the drive coils and the 90{degree} phase shift of the excitation waveforms creates a field which rotates in the test piece under the drive coils. Preliminary tes… more

Date: July 1, 1998

Creator: Capobianco, T. E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Microstructure and kinetics of hot corrosion for a nickel alloy in molten salt

Metallography, analytical SEM, and XRD were used to measure kinetics and characterize the microstructure of hot corrosion of the Ni-Cr-Fe alloy INCONEL 600 after 500 h immersion in molten Na{sub 2}CO{sub 3}- NaCl salt at 900-950 C in an oxidizing atmosphere. This was done to assess the alloy as a reaction vessel material for a waste treatment process known as Molten Salt Oxidation. The alloy was found to hot corrode by surface oxidation and intergranular attack. Combined rate for loss of load-b… more

Date: December 1, 1996

Creator: Stevens, D.W.; Brummond, W.A.; Grimmett, D.L.; Newcomb, J.C.; Chiang, K.T. & Gay, R.L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Characterization of flaws in a tube bundle mock-up for reliability studies

As part of an assessment of in-service inspection of steam generator tubes, the authors will assemble a steam generator mock-up for round robin studies and use as a test bed in evaluating emerging technologies. Progress is reported on the characterization of flaws that will be part of the mock-up. Eddy current and ultrasonic techniques are being evaluated as a means to characterize the flaws in the mock-up tubes before final assembly. Twenty Inconel 600 tubes with laboratory-grown cracks, typic… more

Date: October 1, 1996

Creator: Kupperman, D.S. & Bakhtiari, S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Evaluation of the Initial Isothermal Physics Measurements at the Fast Flux Test Facility, a Prototypic Liquid Metal Fast Breeder Reactor

The Fast Flux Test Facility (FFTF) was a 400-MWt, sodium-cooled, low-pressure, high-temperature, fast-neutron flux, nuclear fission reactor plant designed for the irradiation testing of nuclear reactor fuels and materials for the development of liquid metal fast breeder reactors (LMFBRs). The FFTF was fueled with plutonium-uranium mixed oxide (MOX) and reflected by Inconel-600. Westinghouse Hanford Company operated the FFTF as part of the Hanford Engineering Development Laboratory (HEDL) for th… more

Date: March 1, 2010

Creator: Bess, John D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

An investigation of the mechanism of IGA/SCC of alloy 600 in corrosion accelerating heated crevice environments. Quarterly Technical Progress Report No. 4 for the period May 1, 2000 through July 31, 2000

OAK-B135 An investigation of the mechanism of IGA/SCC of alloy 600 in corrosion accelerating heated crevice environments. Quarterly Technical Progress Report No. 4 for the period May 1, 2000 through July 31, 2000

Date: July 31, 2000

Creator: Lumsden, Dr. Jesse

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

An Investigation of the Mechanism of IGA/SCC of Alloy 600 in Corrosion Accelerating Heated Crevice Environments. Technical Progress Report

This program focuses on understanding mechanisms causing corrosion damage to steam generator tubes in a pressurized water reactor (PWR). The crevice formed by the tube/tube support plate (T/TSP) intersection in a PWR steam generator is a concentration site for nonvolatile impurities (referred to as hideout) in the steam generator water. The restricted mass transport in the small crevice volume prevents the species, which concentrate during the generation of steam, from quickly dispersing into t… more

Date: November 1, 1999

Creator: Lumsden, Jessee

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Process development for cladding APT tungsten targets

This report describes development of processes for cladding APT Target tungsten components with a thin layer (0.127-mm) of Alloy 718, Alloy 600 or 316L stainless steel alloy. The application requires that the cladding be thermally bonded to the tungsten in order to transfer heat generated in the tungsten volume to a surrounding coolant. High temperature diffusion bonding using the hot isostatic processing (HIP) technique was selected as the method for creating a metallurgical bond between pure … more

Date: November 27, 2000

Creator: Horner, M H; Barber, R & Dalder, E

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Thermally activated low temperature creep and primary water stress corrosion cracking of NiCrFe alloys

A phenomenological SCC-CGR model is developed based on an apriori assumption that the SCC-CGR is controlled by low temperature creep (LTC). This mode of low temperature time dependent deformation occurs at stress levels above the athermal flow stress by a dislocation glide mechanism that is thermally activated and may be environmentally assisted. The SCC-CGR model equations developed contain thermal activation parameters descriptive of the dislocation creep mechanism. Thermal activation paramet… more

Date: October 1, 1993

Creator: Hall, M. M. Jr.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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The relationship between observed stress corrosion cracking fracture morphology and microstructure in Alloy 600

Microstructure is known to influence the stress corrosion cracking (SCC) behavior of Alloy 600 in both hydrogenated water and steam environments. This study evaluated the relative SCC response of a single heat of Alloy 600 as a function of microstructure in a hydrogenated doped-steam environment. The 400 C doped-steam environment was selected for the SCC tests to accelerate cracking. The material was evaluated in three conditions: (1) as-received (2) as-annealed, and (3) as-annealed + 26% defor… more

Date: December 31, 1997

Creator: Symons, D. M.; Burke, M. G. & Foster, J. P.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Steam generator tube integrity program: Annual report, August 1995--September 1996. Volume 2

This report summarizes work performed by Argonne National Laboratory on the Steam Generator Tube Integrity Program from the inception of the program in August 1995 through September 1996. The program is divided into five tasks: (1) assessment of inspection reliability, (2) research on ISI (inservice-inspection) technology, (3) research on degradation modes and integrity, (4) tube removals from steam generators, and (5) program management. Under Task 1, progress is reported on the preparation of… more

Date: February 1998

Creator: Diercks, D. R.; Bakhtiari, S.; Kasza, K. E.; Kupperman, D. S.; Majumdar, S.; Park, J. Y. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Influence of Processing Method on the Grain Boundary Character Distribution and Network Connectivity

There exists a growing body of literature that correlates the fraction of ''special'' boundaries in a microstructure, as described by the Coincident Site Lattice Model, to properties such as corrosion resistance, intergranular stress corrosion cracking, creep, etc. Several studies suggest that the grain boundary character distribution (GBCD), which is defined in terms of the relative fractions of ''special'' and ''random'' grain boundaries, can be manipulated through thermomechanical processing… more

Date: December 20, 1999

Creator: Kumar, M & King, W.E.

Item Type: Article

Partner: UNT Libraries Government Documents Department