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In this article, strain-controlled Low-Cycle Fatigue (LCF) and fatigue–creep tests were performed on Inconel 718 nickel-based superalloy at temperatures of 650 °C and 730 °C.High temperature structural components of a gas turbine engine are placed under severe environmental conditions during engine operation. The components experience thermal .
The creep-fatigue interaction (CFI) tests of a TiAl alloy were carried out at 750 °C and 800 °C in air to investigate the effect of dwell time on fatigue life. The low cycle fatigue .
In their study on low-cycle fatigue and creep testing of Ti-6Al-4 V in both as-built and post-processed states at room temperature and elevated temperatures, Viespoli et al. (Ref 29) highlighted the influence of surface .
a low-cycle fatigue condition. Because of the sustained centrifugal force and high working temperature, creep may occur. This obviously occurred to the turbine blade in Figure 17.1a. .Low cycle fatigue–creep is the main reason for the failures of many engineering components under high temperature and cyclic loading.Fatigue at high temperature is a complex phenomenon as it is influenced by a number of time-dependent processes which become important at elevated temperatures. These processes .Elbow elements provide rapid yet accurate modeling of pinching of piping, which consumes a major portion of the creep life. The simulation is used to estimate the remaining life of the .
High-temperature low cycle fatigue (LCF) is influenced by various time-dependent processes such as creep, oxidation, phase transformations and dynamic strain ageing (DSA) .DOI: 10.1016/j.ijfatigue.2024.108369 Corpus ID: 269934021; High-temperature low-cycle fatigue and fatigue-creep behaviour of Inconel 718 superalloy: Damage and deformation mechanisms
In this paper, the high-temperature low-cycle fatigue test and compression creep-fatigue test of cast Al-9Si-CuMg alloy for cylinder head were carried out. Through the analysis of experimental results and microscopic observation, the . Large variation in mechanical propertiessuch as high temperature yield strength between casts and product forms also need to be addressed for design and life prediction. . Creep fatigue and high tem Fig. 3. Stress-strain plot of the (a) hardening phase and (b) both tens For the 316FR steel [6] it can be shown tha (stress rupture curves .
The low cycle fatigue (LCF) and creep tests were also conducted for comparison. The life to failure decreased with increasing dwell time and decreased with increasing minimum strain rate. . It should be noted that CFI curves of dwell time 60 s almost coincide with those of creep at both high temperatures, which indicates that the creep plays . Request PDF | Low cycle fatigue and creep–fatigue interaction behaviour of 2.25Cr1MoV steel at elevated temperature | This study reports the fatigue behaviour of 2.25Cr1MoV steel under low cycle .DOI: 10.1016/J.MSEA.2010.01.001 Corpus ID: 136828795; High temperature creep and low cycle fatigue of a nickel-base superalloy @article{Yu2010HighTC, title={High temperature creep and low cycle fatigue of a nickel-base superalloy}, author={Jin-jiang Yu and Xiao-feng Sun and Tao Jin and Nairen Zhao and Hengrong Guan and Zhuang Qi Hu}, journal={Materials . The service life-limiting factors for turbine blades are thermo-mechanical fatigue, creep and oxidation in the airfoil and high temperature low cycle fatigue in the root section [2]. Hence, high temperature creep and low cycle fatigue (LCF) have been areas of ever-growing interest for the past several decades because of their involvement in .
High-temperature low cycle fatigue (LCF) is influenced by various time-dependent processes such as creep, oxidation, phase transformations and dynamic strain ageing (DSA) depending on test .The creep–fatigue interaction behavior of materials is frequently simulated in the laboratory by high-temperature low-cycle fatigue (HTLCF) or creep-fatigue crack growth (CFCG) tests with hold periods in tension, compression or tension, and compression of a fatigue cycle (ASTM, E2714 and ASTM, E2760). 2.4.1 Creep-fatigue evaluation methods Alloy 617 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 950 °C. Acceptance of Alloy 617 in Section III of the ASME Code for nuclear construction requires a detailed understanding of the creep-fatigue behavior. Initial .
The creep-fatigue interaction (CFI) tests of a TiAl alloy were carried out at 750 °C and 800 °C in air to investigate the effect of dwell time on fatigue life. The low cycle fatigue (LCF) and . High-temperature low cycle fatigue (LCF) is influenced by various time-dependent processes such as creep, oxidation, phase transformations and dynamic strain ageing (DSA) depending on test conditions of strain rate and temperature. . In this paper, high-temperature fatigue and creep–fatigue properties of 316L(N) stainless steel, its welds .
NASALIFE—Component Fatigue and Creep Life Prediction
Low cycle fatigue, creep and creep
To understand high temperature creep-fatigue interaction of the Alloy 709, strain-controlled low-cycle fatigue (LCF) tests were performed at strain amplitudes ranging from 0.15% to 0.6% with fully reversible cycle of triangular waveform at 750 .carried out for these high temperature structures. Life assessment of high temperature structures under LCF loading has become a major challenge for both the scientific and industrial community (Pineau and Antolovich, 2009; Zhang, 2010). Deformation and failure mechanisms of low cycle fatigue–creep (LCF–C) at high temperature are In their study on low-cycle fatigue and creep testing of Ti-6Al-4 V in both as-built and post-processed states at room temperature and elevated temperatures, Viespoli et al. (Ref 29) highlighted the influence of surface . Alloy 617 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 950 degrees C. Acceptance of Alloy 617 in Section III of the ASME Code for nuclear construction requires a detailed understanding of the creep-fatigue behavior.
High-temperature low cycle fatigue, creep-fatigue and thermomechanical fatigue of steels and their welds. 2006, International Journal of Mechanical Sciences. Show abstract. High-temperature low cycle fatigue (LCF) is influenced by various time-dependent processes such as creep, oxidation, phase transformations and dynamic strain ageing (DSA .This paper presents the high-temperature creep-fatigue testing of a Ni-based superalloy of Alloy 617 base metal and weldments at 900 °C. Creep-fatigue tests were conducted with fully reversed axial strain control at a total strain range of 0.6%, 1.2%, and 1.5%, and peak tensile hold time of 60, 180, and 300 s. . Fully-reversed low-cycle .
The low-cycle fatigue test and the compression creep-fatigue test of the cast Al-9Si-CuMg alloy for cylinder heads were carried out at high temperature. The cyclic mechanical response characteristics of the material under two kinds of test loads were analyzed. The microstructural evolution process and fracture mechanism of the material in the process of . This study reports the fatigue behaviour of 2.25Cr1MoV steel under low cycle fatigue (LCF) loading and creep-fatigue interaction (CFI) loading at 355, 455 and 555 °C. Various hold durations up to 600 s were introduced in the CFI tests at the peak/valley strain under strain or stress control. In LCF tests, the steel exhibited remarkable strengthening at 455 °C, .
The present study investigates the effect of different damage modes like low cycle fatigue (LCF), high cycle fatigue (HCF), creep and their interactions during combined cycling at high temperature (923 K) in a 316LN stainless steel.The experiments were designed with multi-step load sequences where specific number of small amplitude HCF cycles (block) were .
The low-cycle fatigue response of the material for temperatures different from the reference temperature can be obtained by translating the reference curve proportionally to the logarithm of the creep damage introduced at the new temperature: High-temperature low cycle fatigue, creep–fatigue and thermomechanical fatigue of steels and their welds Int J Mech Sci , 48 ( 2006 ) , pp. 160 - 175 View PDF View article View in Scopus Google ScholarHigh-Temperature and Low-Temperature Fatigue 17.1 Introduction . a low-cycle fatigue condition. Because of the sustained centrifugal force and high working temperature, creep may occur. This obviously occurred to the turbine blade in .
High-temperature low cycle fatigue, creep–fatigue and thermomechanical fatigue of steels and their welds. Int. J. Mech. Sci., 48 (2) (2006), pp. 160-175. View PDF View article View in Scopus Google Scholar [7] R. Hecht, J. Weertman. The effect of environment on high-temperature hold time fatigue behavior of annealed 2.25 pct Cr 1 pct Mo steel. Strain-controlled low cycle fatigue (LCF) and creep-fatigue testing of Ni-based alloy 230 were carried out at 850 °C. The material creep-fatigue life decreased compared with its low cycle fatigue life at the same total strain range. Longer hold time at peak tensile strain further reduced the material creep-fatigue life. Based on the electron backscatter diffraction, a novel . 2.1. Mechanism of Creep-Fatigue Cracking. The development of creep-fatigue damage in most power plant steels depends on temperature, strain range, strain rate, hold time, and the creep strength and ductility of the material [1,2,3,4].In the absence of a significant hold time (and/or at relatively high strain rates), crack initiation and growth is fatigue dominated, .
High temperature low cycle fatigue
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low cycle fatigue at high temperature with creep|Chapter 17 High