Download or read book Effect of Corrosive Environment on Fatigue Behavior of Nickel Based Alloys written by Aezeden Mohamed and published by . This book was released on 2011 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue; corrosion; precorrosion; pitting; crack initiation; IN600;IN501;C22 alloy.
Download or read book Effect of Corrosive Environment on Fatigue Behavior of Nickel Based Alloys written by Aezeden Omar Mohamed and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue Behavior of Nickel Based Super Alloy 718 in a Hot Corrosive Environment written by Raghu Prakash and published by . This book was released on 2014 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nickel based super-alloys when exposed to a combination of high temperature and low melting point fused corrosion products, result in early fatigue failure compared to their response in high temperature benign environment. The high cycle fatigue (HCF) (at 550 and 625°C) as well as fatigue crack growth (at 550°C) behavior of a nickel based super alloy 718 in hot corrosive environment (Na2SO4+NaCl salt coating), typical of marine engine environment, is presented in this paper. At least an order of magnitude decrease in fatigue life is noticed when the temperature is changed from 550 to 625°C at stress levels below 450 MPa. The statistical analysis of scatter in fatigue lives at different stress levels is performed and a Weibull-Inverse power law model is fitted to the stress-fatigue life data of alloy 718 in hot corrosive environment. Fracture surface examination of hot corrosion fatigue failures showed higher crack growth rates compared to uncoated high temperature HCF fracture surfaces. Fatigue crack growth rate at 550°C in a hot corrosive environment increases by an order of magnitude at 0.5 Hz in the Paris region compared to crack growth kinetics at 2 Hz in lab air environment at the same temperature. The fracture surface shows a mix of transgranular and intergranular mode of crack in the propagation region at 0.5 Hz. A fatigue failure diagram is proposed combining the thresholds of maximum stress level from endurance tests and maximum stress intensity factor from fatigue crack growth tests to demarcate the regions of propagating and non-propagating cracks during hot corrosion fatigue. The complexities in incorporating the effect of loading frequency in fatigue failure diagram are highlighted.
Download or read book Environmental Corrosion fatigue Behavior of Aluminum Alloys written by D. N. Williams and published by . This book was released on 1970 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of environment on fatigue behavior are quite intimately related to such test variables as stress intensity, cyclic frequency, and temperature. The effect of these variables has been shown to be quite complex. However, a consistent pattern of behavior is beginning to emerge which, it is hoped, will lead to a considerably changed understanding of the corrosion-fatigue process. It is considered probable that an increased understanding of the corrosion-fatigue process will also contribute measureably to an improved understanding of general fatigue processes. Material variables such as composition, directionality of properties, and microstructure, have important effects on corrosion-fatigue behavior of aluminum alloys. However, it appears that these variables, at least in gaseous environments, may be important largely because of their effects on the mechanical behavior of aluminum alloys. On the other hand, studies in seawater suggest that these variables become increasingly important as the corrosive nature of the environment increases. This memorandum discusses in detail the effects of both test variables and material variables on corrosion fatigue. In addition, current theories of corrosion-fatigue mechanisms are outlined, and several methods of preventing corrosion fatigue are suggested. (Author).
Download or read book Atlas of Stress corrosion and Corrosion Fatigue Curves written by A. J. McEvily and published by ASM International(OH). This book was released on 1990 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: A reference for materials scientists that can be used to find the effects of various corrosive media and processing variables on the stress-corrosion cracking and corrosion fatigue characteristics of ferrous and nonferrous alloys. There are more than 500 stress/cracking-time curves, S/N curves, and
Download or read book Electroless Plating written by Glenn O. Mallory and published by William Andrew. This book was released on 1990 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Effects on the Fatigue Behavior of Copper Nickel Alloys written by T. S. Sudarshan and published by . This book was released on 1984 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Corrosion Fatigue Behavior of Metals and Alloys written by David J. Duquette and published by . This book was released on 1980 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is well known that environment plays a very important role in fatigue failures. In some cases only crack propagation rates are affected; however, for many others all of the steps leading to failure, pre-initiation deformation, crack initiation and crack propagation are affected. For still other cases, only the crack initiation and early propagation processes are affected. This paper attempts to evaluate the mechanisms which have been proposed for environmental effects on the early stages of fatigue damage, including crack initiation and early propagation in gaseous and in aqueous environments. Evidence is presented which indicates that there is no unifying theory of environmental fatigue, but that each alloy/environment couple may exhibit significantly different behavior, depending on factors such as thermodynamics and kinetics as well as microstructure, slip character, etc. (Author).
Download or read book Thermomechanical Fatigue Behavior of Materials written by Huseyin Sehitoglu and published by ASTM International. This book was released on 1993 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Alloy Chemistry Cold Work and Water Chemistry on Corrosion Fatigue and Stress Corrosion Cracking of Nickel Alloys and Welds written by O. K. Chopra and published by . This book was released on 2001 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reactor vessel internal components made of nickel-base alloys are susceptible to environmentally assisted cracking (EAC). A better understanding of the causes and mechanisms of this cracking may permit less conservative estimates of damage accumulation and requirements on inspection intervals. The objective of this work is to evaluate and compare the resistance of Alloys 600 and 690 and their welds, such as Alloys 82, 182, 52, and 152, to EAC in simulated light water reactor environments. The existing crack growth rate (CGR) data for these alloys under cyclic and constant loads have been evaluated to establish the effects of alloy chemistry, cold work, and water chemistry. The experimental fatigue CGRs are compared with CGRs that would be expected in air under the same mechanical loading conditions to obtain a qualitative understanding of the degree and range of conditions for significant environmental enhancement in growth rates. The existing stress corrosion cracking (SCC) data on Alloys 600 and 690 and Alloy 82, 182, and 52 welds have been compiled and analyzed to determine the influence of key parameters on growth rates in simulated PWR and BWR environments. The SCC data for these alloys have been evaluated with correlations developed by Scott and by Ford and Andresen.
Download or read book Corrosion Resistance of Nickel and Nickel Alloys Against Acids and Lyes written by Michael Schütze and published by John Wiley & Sons. This book was released on 2015-01-27 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Derived from the online reference "Corrosion Handbook", this handbook brings together all the relevant information on corrosion protection and prevention for nickel-based materials, all in a convenient and easy-to-use format. As such, it provides scientists and engineers manufacturing and utilizing these materials with comprehensive information, including tabulated data and references, on their corrosion behavior when in contact with acids and hydroxides.
Download or read book Corrosion Characteristics Mechanisms and Control Methods of Candidate Alloys in Sub and Supercritical Water written by Donghai Xu and published by Springer. This book was released on 2022-12-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to provide comprehensive and systematic introduction and summary of corrosion characteristics, mechanisms, and control methods of candidate alloys in sub- and supercritical water environment. First of all, corrosion types of candidate alloys and the effects of major alloying elements on corrosion resistance of potential alloys in sub- and supercritical water are compared and analyzed. At the same time, research status of candidate materials, and development and application trends of several corrosion-resistant alloys are summarized. Then, corrosion characteristics of Ni-Cr, Ni-Cr-Mo, Ni-Fe-Cr and Ni-Fe-Cr-Mo-Cu corrosion-resistant alloys, FeCrAl alloy, and Zircaloy are discussed in detail, including the corrosion rate, the structure and composition of oxide film, and the effects of various surface treatment processes, etc. More specifically, it also investigates corrosion behavior of Ni-based alloy, Fe-Ni-based, and stainless steels in supercritical water. The effects of aggressive species on the corrosion behavior of Ni-base alloys are also explored in supercritical water. Readers will further discover the total corrosion processes and mechanisms of typical candidate alloys in sub- and supercritical water environment. Finally, the work explores the corrosion control methods such as ceramic coatings and passivation processes in supercritical water oxidation and in subcritical water, respectively. Future challenges and development trends of corrosion research of candidate materials in sub- and supercritical water environments are covered at the end of this book. It offers valuable reference for theoretically guiding material selection and design and operating parameter optimization of key equipment in the sub- and supercritical water technologies. The book is written for senior undergraduates, graduate students, scholars, and researchers who are interested in corrosion behavior of candidate materials of supercritical water oxidation system, supercritical water gasification system, and nuclear reactor.
Download or read book The Effect of Environment on the Fatigue Strengths of Four Selected Alloys written by T. R. Shives and published by . This book was released on 1965 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fretting Fatigue Behavior of Nickel Alloy IN 100 written by Elhoucine Madhi and published by . This book was released on 2006 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Superalloys 2016 written by Mark C. Hardy and published by Wiley-TMS. This book was released on 2016-10-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the Proceedings 13th International Symposium on Superalloys
Download or read book The Role of the Environment and Its Effects on the High Temperature Corrosion fatigue Life in Nickel Based Superalloys written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Corrosion fatigue Technology written by and published by ASTM International. This book was released on 1978 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt:
