|Series||Conference proceedings / AGARD -- no.155, Conference proceedings (AGARD) -- no.155.|
|Contributions||Advisory Group for Aerospace Research and Development. Structures and Materials Panel. Meeting,|
|The Physical Object|
Get this from a library! Characterization of low cycle high temperature fatigue by the strainrange partitioning method: papers presented at the 46th Meeting of the AGARD Structures and Materials Panel held in Aalborg, Denmark on April [North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. 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 include creep, oxidation, phase instabilities and dynamic strain ageing (DSA), acting either independently or synergistically influence fatigue behaviour, often lowering the fatigue by: A better understanding of the problem of high-temperature low-cycle fatigue is important in the use of materials at high temperatures. Some of the metallurgical aspects involved in the problem have been emphasized in this paper. There is a need to relate more closely the observed results with our knowledge of metallurgical processes. This can best be done by a closer working relationship Cited by: Considerable cooperative research in the field of high-temperature low-cycle fatigue has been undertaken by the Pressure Vessel Research Committee of the Welding Research Council, the Metals Properties Council, and various industrial and government groups. The effort of the PVRC and the Metals Properties Council is reviewed.
In general, the temperature varies between a high operating temperature and a low non-operational ambient temperature. As a result of the temperature profile, cyclic thermal stresses can be introduced. High-temperature fatigue conditions imply that the fatigue load and temperature . The low cycle fatigue (LCF) properties of 24Cr ferritic stainless steel for solid oxide fuel cell interconnects were investigated. The fatigue strength of 24Cr stainless steel decreased with increasing temperature, but the fatigue life increased at °C and °C. 1. Introduction. The directionally solidified (DS) nickel-base superalloy is widely used in gas turbine blade due to its excellent high temperature fatigue and corrosion resistant es induced by low cycle fatigue (LCF) have been extensively reported in gas turbine fundamental studies have revealed that LCF property and deformation mechanism of nickel . Flight Mechanics Panel., 1 book Specialists Meeting on Directionally Solidified In-Situ Composites ( Washington), 1 book Specialists Meeting on Low Cycle High Temperature Fatigue ( Washington), 1 book Dino A. Lorenzini, 1 book Symposium on Aircraft Design Integration and Optimization ( Florence), 1 book Advisory Group for Aerospace.
Technical evaluation report of the Specialists' Meeting ott characterization of low,-cycle high-temperature fatigue by the strain-range partitioning method. AR. -1GARD Reports Lazan, B.a. Fatigue of structural tnaterials at high temperatures. Report 1,, l;5". Low-cycle fatigue behavior of Hastelloy X at elevated temperature is presented. We studied the effects of test temperature, cycle frequency, and stress temperature arrangement with special attention given to the minimum ductility (short-time tension test) at or near F. Isothermal fatigue data at , , , and F are presented along with strain controlled thermal fatigue data. HIGH TEMPERATURE LOW CYCLE FATIGUE BEHAVIOR Figure 2. Microstructures of Ti conditions: a) , b) , c) , d) , el 5.A and f) 5.B. 2. Strain Control High Temperature Low Cycle Fatigue Strain control tests were performed in a 30 ton servohydraulic machine capable of generating triangular load-displacement waveforms with a Observed effects of wave shape on low-cycle fatigue resistance and on concomitant fracture appearance at elevated temperature are summarized. Additionally, previously unreported tests on oxygen-free high conductivity (OFHC) copper at K, as well as available published results, are examined using unequal strain rates to produce the wave shape.