Estimation of fatigue parameters in total strain life equation for powder metallurgy superalloy FGH96 and other metallic materials
Source abstract
Abstract
Abstract Monotonic tensile and low cycle fatigue (LCF) tests of powder metallurgy (PM) superalloy FGH96 were conducted at 480 °C and 650 °C. The alloy was widely used to manufacture the aero-engine turbine disk by a process of hot isostatic pressing (HIP). An analysis method was proposed to obtain the fatigue parameters of the total strain equation with clearly physical meaning. The proposed method offered satisfied results for FGH96. Fractography analysis was conducted to determine the material fatigue failure mechanisms. Comparing to the given parameters of total strain life equation of the handbook, the predicted fatigue lives of GH4169 alloy at 500 °C and 650 °C, FGH95 alloy at 500 °C and TC4 alloy at 200 °C by the proposed method agreed better with the experimental results.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fatigue and fracture mechanics · Metallurgy and Material Forming · Metal Alloys Wear and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (23)
Show source-provided references
1. Crystallographic fatigue crack initiation in nickel-based superalloy René 88DT at elevated temperature10.1016/j.actamat.2009.08.022 ↗
2. Low cycle fatigue behavior and life evaluation of a P/M nickel base superalloy under different dwell conditions10.1016/j.proeng.2010.03.226 ↗
3. Comparison of prediction methods for low-cycle fatigue life of HIP superalloys at elevated temperatures for turbopump reliability10.1016/j.msea.2009.04.044 ↗
4. Effect of heat treatment on low cycle fatigue of IN718 superalloy at the elevated temperatures10.1016/j.msea.2017.02.104 ↗
5. Low cycle fatigue behavior of a high Co polycrystalline nickel-base superalloy at 750 °C10.1016/j.jallcom.2018.03.364 ↗
6. Experimental investigation on low cycle fatigue and fracture behavior of a notched Ni-based superalloy at elevated temperature10.1111/ffe.12169 ↗
7. Oxidation and the effects of high temperature exposures on notched fatigue life of an advanced powder metallurgy disk superalloy
8. Low cycle fatigue of metallic materials under uniaxial loading at elevated temperature10.1016/j.ijfatigue.2018.05.025 ↗
9. Strain energy gradient-based LCF life prediction of turbine discs using critical distance concept10.1016/j.ijfatigue.2018.04.006 ↗
10. Fatigue life calculation for TC4-TC11 titanium alloy specimens fabricated by laser melting deposition10.1016/j.tafmec.2018.04.009 ↗
11. The exponential law of endurance tests
12. Behavior of materials under conditions of thermal stress
13. A study of the effect of cyclic thermal stresses on a ductile metal
14. Cyclic plastic strain energy and fatigue of metals
15. Fatigue: a complex subject – some simple approximate10.1007/BF02321056 ↗
16. Socie · 1977
17. A modified universal slopes equation for estimation of fatigue characteristics of metals10.1115/1.3226010 ↗
18. An improved technique for the prediction of axial fatigue life from tensile data10.1016/0142-1123(93)90179-T ↗
19. Draper · 1999
20. Strain – controlled fatigue properties of steels and some simple approximations10.1016/S0142-1123(00)00026-8 ↗
21. Statistical evaluation of strain-life fatigue crack initiation predictions
22. Analysis of strain-life fatigue parameters and behaviour of different groups of metallic materials10.1016/j.ijfatigue.2010.10.005 ↗
23. Material data handbook of aircraft engine design committee. Material data handbook of aircraft engine design(the third book). The Aviation Industrial Publishing House, 2008.