Journal ArticleDOI
Fatigue crack initiation and short crack growth in nickel-base turbine disc alloys: the effects of microstructure and operating parameters
H.T. Pang,Philippa Reed +1 more
TLDR
In this paper, an assessment of the effects of microstructure and operating parameters on both crack initiation and propagation of short fatigue cracks is presented, and the assessment was carried out on RR1000, U720Li and microstructural variants of U 720Li.About:
This article is published in International Journal of Fatigue.The article was published on 2003-09-01. It has received 89 citations till now. The article focuses on the topics: Crack closure & Paris' law.read more
Citations
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The Superalloys: Fundamentals and Applications
TL;DR: In this paper, the physical metallurgy of nickel and its alloys is discussed and single crystal superalloys for blade applications for turbine disc applications are discussed. And the role of coatings is discussed.
Journal ArticleDOI
Microstructure-sensitive extreme value probabilities for high cycle fatigue of Ni-base superalloy IN100
TL;DR: In this paper, a microstructure-sensitive extreme value statistical framework was proposed to quantify the effects of interactions between various micro-structure attributes on fatigue life in the HCF regime.
Journal ArticleDOI
Microstructure-sensitive modeling of high cycle fatigue
TL;DR: In this article, a philosophy of employing computational simulation to establish relations between remote loading conditions and microstructure-scale slip behavior in terms of Fatigue Indicator Parameters (FIPs) as a function of stress amplitude, stress state and micro-structure, featuring calibration of mean experimental responses for known microstructures.
Journal ArticleDOI
The role of defects and critical pore size analysis in the fatigue response of additively manufactured IN718 via crystal plasticity
TL;DR: In this article, a crystal plasticity (CP) based framework is developed to identify the critical porosity characteristics, which quantifies the limiting scenarios of fatigue crack initiation at a pore rather than the crystallographic features.
Journal ArticleDOI
A quantitative approach to study the effect of local texture and heterogeneous plastic strain on the deformation micromechanism in RR1000 nickel-based superalloy
TL;DR: In this paper, electron backscatter diffraction (EBSD) is applied to measure the plastic strain present in RR1000 nickel-based superalloy microstructure following thermo-mechanical fatigue tests.
References
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Journal ArticleDOI
A study of fatigue damage mechanisms in Waspaloy from 25 to 800 C
TL;DR: In this paper, the effect of various microstructures on the fatigue and damage accumulation behavior of Waspaloy, a nickel-base alloy commonly used in aircraft engines, was examined.
Journal ArticleDOI
The crystallography of fatigue crack initiation in coarse grained astroloy at 20°C
David L. Davidson,Kwai S. Chan +1 more
TL;DR: In this paper, the effects of crystallographic orientation on fatigue crack initiation was examined for coarse-grained Astroloy at 20°C by cycled by three-point bending at stress ranges between 5 and 95% of the proportional limit until fatigue cracks were detected.
Journal ArticleDOI
Short-fatigue-crack growth in a nickel-base superalloy at room and elevated temperature
TL;DR: In this article, an optical system was used to monitor short-crack growth at elevated temperature and to study the fatigue behavior of Waspaloy, showing that the dominant mechanism of crack formation was slip band cracking.
Journal ArticleDOI
The initiation and propagation behaviour of short fatigue cracks in Waspaloy subjected to bending
TL;DR: The fatigue crack growth behavior of a nickel base superalloy, Waspaloy, has been studied using four point bending specimens in laboratory air as mentioned in this paper, for which the span/width ratios were 1 and 2.5.
Journal ArticleDOI
Fatigue of a nickel base superalloy with bimodal grain size
S.-F. Toh,W.M. Rainforth +1 more
TL;DR: In this paper, room temperature fatigue tests in the form of four point bending were performed at a frequency of 20 Hz and a load ratio R= + 0·1 on electropolished Waspaloy specimens taken from a forged turbine.