Effect of Al-Si Pack Cementation Diffusion Coating on High-Temperature Low-Cycle Fatigue Behavior of Inconel 713LC

Mansuri, Mohammadreza; Hadavi, S.M.M.; Zare, Esmail

doi:10.1007/s11661-015-3201-0

Cited by 6 publications

(1 citation statement)

References 28 publications

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“…Julis et al [5] investigated LCF properties of Al-Si-coated IN713LC superalloy and reported no effect of the coating on the Basquin curve and its positive effect on the Coffin-Manson curve at 800 °C. On the other hand, the positive effect of Al-Si coating on LCF properties of IN713LC has been reported by Mansuri et al [6] at J. Min. Metall.…”

Section: Introductionmentioning

confidence: 68%

The effect of platinum-aluminide coating features on high-temperature fatigue life of nickel-based superalloy Rene®80

Barjesteh

Zangeneh-Madar

Abbasi

et al. 2019

J min metall B Metall

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Low cycle fatigue is the most important failure mode in Aviation/Industrial engine rotary turbine parts. In this paper, the influence of Pt-aluminide coating parameters on high temperature low cycle fatigue behavior of superalloy Rene?80 which is used to manufacture turbine blades, has been investigated. For this purpose, initial platinum layers of different thicknesses (2?m and 8?m) were coated on fatigue specimens. Then the aluminizing process was performed with two conditions of low temperature-high activity and high temperature-low activity. The results of microstructure investigations performed by scanning electron microscope and X-ray diffraction phase analysis indicated a three-layer structure for the coating (bi-phase (Ni,Pt)Al+PtAl2, single-phase (Ni,Pt)Al and interdiffusion zone) with different chemical compositions at both thicknesses of the platinum layer and using both aluminizing methods. Also, the results of low cycle fatigue tests at 871?C, R=0 and strain rate of 2?10 -3 s-1 showed a decline in fatigue properties in coated specimens as compared to uncoated sample, at total strains of 0.4, 0.8, and 1.2%. This reduction was lower in the low temperature-high activity with platinum layer thickness of 2?m, while it was more significant in the high temperature-low activity with the platinum layer thickness of 8?m. The fractography studies on coated and uncoated specimens indicated a mixed mode of ductile and brittle fracture.

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Section: Introductionmentioning

confidence: 68%