Journal ArticleDOI
Effect of pre hot corrosion on high cycle fatigue behavior of the superalloy IN718 at 600 °C
TLDR
In this paper, high cycle fatigue behavior of the superalloy IN718 was studied in the air at 600°C in fully reversed stress controlled mode (R = −1), in the as heat treated condition as well as pre hot corroded in the salt mixture of 75Na2SO4+15NaCl+10V2O5 (wt.%) at 600 °C for 100About:
This article is published in International Journal of Fatigue.The article was published on 2018-09-01. It has received 21 citations till now. The article focuses on the topics: Fatigue limit.read more
Citations
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Microstructure evolutions and interfacial bonding behavior of Ni-based superalloys during solid state plastic deformation bonding
TL;DR: In this paper, the plastic deformation bonding behavior of IN718 superalloy was systematically investigated by performing a series of isothermal compression tests at various processing conditions and it was revealed that new grains evolved in the bonding area through discontinuous dynamic recrystallization (DDRX) at 1000-1150°C.
Journal ArticleDOI
Oxidation behavior and microstructure degeneration of cast Ni-based superalloy M951 at 900 °C
TL;DR: In this paper, the Ni-based superalloy M951 was investigated at 900 ˚C for 200 ǫh and the microstructure degeneration of the Ni oxide layer was investigated.
Journal ArticleDOI
High Cycle Fatigue Performance of Inconel 718 Alloys with Different Strengths at Room Temperature
TL;DR: In this article, the secondary fracture features of the fatigue fracture morphology and fatigue fracture profile were analyzed using scanning electron microscopy (SEM) and transmission electron microscope (TEM) to analyze the original structural features and fatigue deformation features.
Journal ArticleDOI
Effect of stress ratio and mean stress on high cycle fatigue behavior of the superalloy IN718 at elevated temperatures
Dhananjay Pradhan,G.S. Mahobia,Kausik Chattopadhyay,D C Fernando,Neeta Paulose,S N N Babu,Vinay Kumar Singh +6 more
TL;DR: In this paper, the effect of mean stress on high cycle fatigue behavior of the superalloy IN718 at 400, 500 and 600 °C, at stress ratios (R) −1, 0.5, and 0.7.
Journal ArticleDOI
Hot Corrosion and Mechanical Performance of Repaired Inconel 718 Components via Laser Additive Manufacturing.
TL;DR: Investigation of damaged Inconel 718 alloy components with a pre-made trapezoid groove using laser additive manufacturing technique shows that oxidation and Cr-depletion occur on the repaired components due to the hot corrosion, and the corrosion products are mainly composed of Cr2O3, Fe3O4, and Ni3S2.
References
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Book
Elements of Metallurgy and Engineering Alloys
TL;DR: In this paper, the authors provide thorough and systematic coverage on both basic metallurgy and the practical engineering aspects of metallic material selection and application, including practical information on the engineering properties and applications of steels, cast irons, nonferrous alloys, and metal matrix composites.
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Hot corrosion in gas turbine components
TL;DR: In this paper, the macroscopic and microscopic characteristics as well as the proposed mechanisms of Type I (high-temperature) and Type II (low temperature) hot corrosion are reviewed.
Journal ArticleDOI
Precipitation of the δ-Ni 3 Nb phase in two nickel base superalloys
TL;DR: In this article, the precipitation of the metastable δ-Ni3Nb phase has been studied in two niobium bearing nickel base superalloys and the morphology and distribution of precipitates have been examined and the crystallographic orientation relationship between the austenite and the δ phases has been determined.
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High cycle fatigue in aircraft gas turbines—an industry perspective
TL;DR: The largest single cause of component failures in modern military aircraft gas turbine engines is high cycle fatigue (HCF), exceeding the number attributed to low cycle fatigue, corrosion, overstress, manufacturing processes, mechanical damage, and materials.
Book
High Temperature Corrosion and Materials Applications
TL;DR: High-Temperature Corrosion and Materials Applications as mentioned in this paper is a comprehensive guide to the forms of high-temperature corrosion and methods for prevention and mitigation, which addresses the new concerns, new technologies, and new materials available for those engaged in high temperature applications.