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2 edition of Temperature and strain-rate effects on low-cycle fatigue behavior of alloy 800H found in the catalog.

Temperature and strain-rate effects on low-cycle fatigue behavior of alloy 800H

Temperature and strain-rate effects on low-cycle fatigue behavior of alloy 800H

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  • 21 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, D.C, Springfield, Va .
Written in English

    Subjects:
  • Temperature dependence.,
  • Strain rate.,
  • Life (Durability),
  • Fatigue (Materials),
  • Alloys.

  • Edition Notes

    Other titlesTemperature and strain rate effects on low cycle fatigue behavior of alloy 800H.
    StatementK. Bhanu Sankara Rao ... [et al.].
    SeriesNASA-TM -- 112753., NASA technical memorandum -- 112753.
    ContributionsRao, K. Bhanu Sankara., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18133013M

      The effects of elevated testing temperature on the fatigue behavior of carburized steel were evaluated by testing modified Brügger bending fatigue specimens at room temperature, 90 °C and °C. SAE , SAE , and SAE steel were studied to assess the influence of alloy content and stability of retained : Dustin A. Turnquist, David K. Matlock, John G. Speer, George Krauss. Current Activities in Standardization of High-Temperature, Low-Cycle-Fatigue Testing LCF test methods for metal-matrix composites requires an assessment of the effect on fatigue behavior of various test parameters such as specimen design and preparation, Interlaboratory Fatigue Test Program on Alloy H [email protected] - The. Low cycle fatigue tests have been performed on the tantalum base alloys T-1]I and ASTAR 8lie with synchronized, independently programmed temperature and strain cycling. The thermal-mechanical cycles applied fell into three basic categories: these were isothermal cycling, in-phase thermal cycling, and out-of-phase thermal cycling. In-phase File Size: 6MB.   The low-cycle fatigue (LCF) properties and post-fatigue microstructure of a FeMnCr-8Ni-4Si austenitic alloy were investigated under an axial strain control mode with total strain amplitudes, Δε t /2, ranging from × to 2 × The fatigue resistance of the alloy was described by Coffin-Manson's and Basquin's relationships, and the corresponding fatigue parameters were Cited by:

    Covers all aspects of metallurgical processing, materials behavior and microstructural performance for a distinct class of type superalloys and derivatives; Presents technical advancements relative to a broad spectrum of areas while assessing their impact on related fields associated with this critical alloy .


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Temperature and strain-rate effects on low-cycle fatigue behavior of alloy 800H Download PDF EPUB FB2

The effects of strain rate (4 × to 4 × s-1) and temperature on the low-cycle fatigue (LCF) behavior of alloy H have been evaluated in the range ° to °. Total axial strain controlled LCF tests were conducted in air at a strain amplitude of ± pct.

Low-cycle fatigue life decreased with decreasing strain rate and increasing by: The effects of strain rate (4 × to 4 × 10 -3 S -1) and temperature on the low-cycle fatigue (LCF) behavior of alloy H have been evaluated in the range °C to °C. Total axial strainFile Size: 2MB.

The effects of strain rate (4 x 10(exp -6) to 4 x 10(exp -3)/s) and temperature on the Low-Cycle Fatigue (LCF) behavior of alloy H have been evaluated in the range C to C.

Total axial. And also, creep-fatigue experiments were carried out at °C employing % total strain range and 10 −3 /s strain rate using trapezoidal waveform with tension hold time. The main focus is to characterize the low-cycle fatigue properties for Alloy H weldment specimens from the cyclic deformation behavior and fatigue fracture : Seon-Jin Kim, Rando Tungga Dewa, Woo-Gon Kim, Eung-Seon Kim.

Low-cycle fatigue tests have been carried out on Alloy H in the temperature range 22– °C with either diametral strain measurement with conversion to axial strain or direct axial strain measurement. The axial strain was cycled between equal positive and negative values in the range of 2–%.Cited by: A gradient nanocrystallined (NC) surface layer was generated on AZ31b magnesium alloy by means of surface mechanical attrition treatment (SMAT).

The effects of strain rate and ball size on low cycle fatigue behavior of the SMATed samples were studied under strain-controlled by: The low-cycle fatigue (LCF) behavior of a nickel-based single crystal superalloy with [] orientation was studied at an intermediate temperature of T 0 °C and a higher temperature of T 0 + °C under a constant low strain rate of 10 −3 s −1 in ambient atmosphere.

The superalloy exhibited cyclic tension-compression asymmetry which is dependent on the temperature and applied strain by: Effect of temperature and strain rate on LCF behavior Effect of temperature and strain rate on the cyclic stress response curves are shown in Fig.

2 (a) and (b) respectively. The weld joint generally exhibited a very rapid strain hardening to a maximum stress followed by a nearly stable peak by: 9.

Low-cycle fatigue behavior of the HAYNES HR alloy in the temperature range from 24°C to °C and total strain range from % to % was investigated under an axial total strain control mode in laboratory air. It was noted that increasing temperature generally led to a substantial decrease in the fatigue life of the by: metals Article Understanding Low Cycle Fatigue Behavior of Alloy Base Metal and Weldments at C Rando Tungga Dewa 1, Seon Jin Kim 1,*, Woo Gon Kim 2 and Eung Seon Kim 2 1 Department of Mechanical Design Engineering, Pukyong National University, BusanKorea; @ 2 Korea Atomic Energy Research Institute (KAERI), DaejeonKorea.

The effects of strain rate (4 x 10(exp -6) to 4 x 10(exp -3)/s) and temperature on the Low-Cycle Fatigue (LCF) behavior of alloy H have been evaluated in the range C to C.

Total axial strain controlled LCF tests were conducted in air at a strain amplitude of +/- pct. LCF life decreased with decreasing strain rate and increasing temperature.

Schiffers's 3 research works with citations and 92 reads, including: Temperature and Strain-Rate Effects on Low-Cycle Fatigue Behavior of Alloy H. Abstract: The aim of this study is to investigate the fully-reversed low cycle fatigue properties of Alloy in the air at C; these tests were conducted at total strain ranges from % to % with a constant strain rate of 10 3/s.

The result of the fatigue tests showed a decrease in fatigue resistance with an increasing total strain range.

The effect of aging and cold working on the high-temperature low-cycle fatigue behavior of alloy H: Part I. The effect of hardening processes on the initial stress-strain curve. Cited by: 2. PDF | In the present investigation, comparative evaluation of the low cycle fatigue (LCF) of tube and forged Alloy M have been studied.

Total axial | Find, read and cite all the research you. Get this from a library. Temperature and strain-rate effects on low-cycle fatigue behavior of alloy H. [K Bhanu Sankara Rao; United States. National Aeronautics and Space Administration.;].

Abstract. In the present investigation, comparative evaluation of the low cycle fatigue (LCF) of tube and forged Alloy M have been studied. Total axial strain controlled tests were performed on sub-sized specimens between and K employing strain amplitudes ranging from ± to ±1 % at a nominal strain rate of 3 × 10 −3 s − alloy underwent cyclic hardening at all Cited by: 2.

The individual and combined effects of cold working (5 and 10 pct) and aging ( and h in the temperature range to °C) on the high-temperature low-cycle fatigue behavior of alloy. K. Bhanu Sankara Rao, H.

Schiffers, H. Schuster and G. Halford, Temperature and strain-rate effects on low-cycle fatigue behavior of Alloy H, Metallurgical and Materials Transactions A, 27A () – Google ScholarCited by: 8. temperature gradients which occur on heating and cooling during start-up and shut-down operations.

Therefore, resis-tance to low-cycle fatigue (LCF) is an essential require-ment. As a result, specific attention has been directed to the behavior of alloy H in recent years.t1 12]These investi-gations were conducted with the following objectives: (1). The individual and combined effects of cold working (5 and 10 pct) and aging ( and h in the temperature range to °C) on the high-temperature low-cycle fatigue behavior of alloy H have been investigated.

The specimens were tested at the aging temperatures. Both the saturation stress range and the fatigue life were found to be history by: 6. Low cycle fatigue (LCF) behavior of solution annealed Alloy M forging is studied at, and K using strain amplitudes ±, ±, ± and ±% at a nominal strain rate of 3.

The low‐cycle fatigue (LCF) behavior of 9Cr ferritic‐martensitic steel has been investigated over a range of controlled total strain amplitudes from to % at room temperature (RT).

The LCF properties of P92 steel at RT follow Coffin‐Manson relationship. In present work the effects of strain rate on low cycle fatigue behavior of ASTM AB pressure vessel steels after long-term thermal aging at K in air have been investigated in simulated BWR environments.

It was found that the aging treatment led to a certain decrease in fatigue by: 1. The present work was to investigate the low cycle fatigue (LCF) behavior of low-alloy pressure vessel steels in high temperature water. Special attention was paid on the influence of strain rate change in an individual LCF test on fatigue resistance of the steels.

The alternate sequence of Author: Xinqiang Wu, Yasuyuki Katada. Abstract: The low cycle fatigue(LCF) properties of as-extruded AZ31 Mg alloy were investigated under total strain amplitudes in the range of %−% with strain rate of 1×10−2 s−1.

Due to the twinning effect in compression during loading and the detwinning effect during unloading, the alloy showed an asymmetric hysteresis loop. In this paper, a high-temperature low-cycle fatigue life prediction model, based on the total strain energy density method, was established.

Considering the influence of the Masing and non-Masing behavior of materials on life prediction, a new life prediction model was obtained by modifying the existing prediction model. With an H alloy of the heat transfer tube of a steam generator as the Author: Wei Zhang, Tao Jiang, Liqiang Liu.

Continuous cycle fatigue and creep-fatigue testing of Alloy was conducted at °C and % and % total strain in air to simulate damage modes expected in a VHTR application. Continuous cycle fatigue specimens exhibited transgranular by: In this investigation, high-temperature, low-cycle fatigue and crack growth tests using a range of cyclic periods ranging from one second to five hours, as well as stress relaxation experiments were conducted to determine the influence of testing temperature and hold time on the low-cycle fatigue behavior of HAYNES alloy.

The effects of strain rate (4 {times} 10{sup {minus}6} to 4 {times} 10{sup {minus}3} s{sup {minus}1}) and temperature on the low-cycle fatigue (LCF) behavior of alloy H have been evaluated in the range C to C.

Total axial strain controlled LCF tests were. This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. The effect of a corroded surface layer on the tensile properties and the high-temperature low-cycle fatigue life was studied on Hastelloy-X and on Incoloy alloys and H by comparing the properties between specimens exposed to air and high-temperature gas-cooled reactor helium at /sup 0/C prior to testing and specimens aged under the same temperature/time conditions as those of.

The present work was to investigate the low cycle fatigue (LCF) behavior of low-alloy pressure vessel steels in high temperature water. Special attention was paid on the influence of strain rate change in an individual LCF test on fatigue resistance of the by: 6. Journal Article: Effect of aging and cold working on the high-temperature low-cycle fatigue behavior of alloy H.

Part I. The effect of hardening processes on the initial stress--strain curve. Low cycle fatigue behaviour of ex service P92 steel at elevated temperature European Structural Integrity Society Microstructure and directional fatigue behavior.

Effect of temperature and strain rate on LCF behavior Effect of temperature and strain rate on the cyclic stress response curves are shown in Fig. 2 (a) and (b) respectively. The weld joint generally exhibited a very rapid strain hardening to a maximum stress followed by a nearly stable peak stress.

Effects of Temperature and Hold Times on Low Cycle Fatigue of Astroloy Fatigue and Creep Behavior of Alloy H at Elevated Temperatures Effects of Segregation and Environment on Fatigue Crack Growth at Elevated Temperatures Evolution structurale et cavitation en volume dans un alliage Ni-Ge 6 at % fatigue A 0,5 TfBook Edition: 1.

@article{osti_, title = {Low Cycle Fatigue and Creep-Fatigue Behavior of Alloy at High Temperature}, author = {Cabet, Celine and Carroll, Laura and Wright, Richard}, abstractNote = {Alloy is the leading candidate material for an intermediate heat exchanger (IHX) application of the Very High Temperature Nuclear Reactor (VHTR), expected to have an outlet temperature as high as History.

Common factors that have been attributed to low-cycle fatigue (LCF) are high stress levels and a low number of cycles to failure. Many studies have been carried out, particularly in the last 50 years on metals and the relationship between temperature, stress, and number of cycles to are used to plot an S-N curve, and it has been shown that the number of cycles to failure.

Azadi et al. studied the low cycle fatigue properties of the peak aged A - T6 alloy with significantly lower copper addition (%) and on comparison, the fatigue lives reported at °C are significantly lower at comparable strain levels in relation to the overaged A + % Cu–T7 alloy studied here.

The fatigue lives at lower Author: Elanghovan Natesan, Stefan Eriksson, Johan Ahlström, Christer Persson. The low cycle fatigue (LCF) behavior and fatigue crack growth rates (da/dN) of alloy IN were studied in detail atand “C, including the cycle stress-strain behavior, Massing effect, the LCF lives expressed by plastic strain energy and fatigue crack growth rates.Strain-rate effects on the low-cycle fatigue (LCF) behavior of a NIMONIC PE superalloy have been evaluated in the temperature range of to K.

Total-strain-controlled fatigue tests were performed at a strain amplitude of [+-] pct on samples possessing two different prior microstructures: microstructure A, in the solution-annealed.Among all the properties of superalloys, fatigue is one of the most important, often limiting the overall service life.

Generally, the microstructures, such as segregation, δ phases, γ’ phase, γ″ phase, and carbide particles, have a significant effect on fatigue behavior of nickel-based superalloys [10,11,12,13].Zhang et al.

[] indicated that a nickel-based superalloy with fine Author: Li-Shi-Bao Ling, Zheng Yin, Zhi Hu, Jun Wang, Bao-De Sun.