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Elevated Temperature Fatigue Crack Growth Of Single Crystal Rene N4 Superalloy
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Book Synopsis Elevated Temperature Fatigue Crack Growth of Single Crystal René N4 Superalloy by : S. Venkataraman
Download or read book Elevated Temperature Fatigue Crack Growth of Single Crystal René N4 Superalloy written by S. Venkataraman and published by . This book was released on 1988 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Constant-load-amplitude fatigue crack growth tests were conducted at 0.33 Hz over a temperature range of 538 to 871°C for single crystal René N4 nickel base superalloy. Crack growth behavior was found to be similar in the Paris law regime for the entire temperature range tested except for a slight increase in growth rate at 871°C at higher levels of the stress intensity range. Mainly, two distinct modes of fatigue fracture were observed, namely, a flat, featureless, Stage II fracture morphology and a faceted, crystallographic, Stage I cracking mode. The Stage II fatigue fracture occurred over the entire range of ?K at the three highest temperatures. At 538°C, however, a transition from Stage II to Stage I fatigue fracture occurred with increase in ?K. The higher crack growth rates at higher temperatures in the high-stress-intensity range were attributed to casting defects present in the material.
Book Synopsis Role of Environment in Elevated Temperature Crack Growth Behavior of Renè N4 Single Crystal by : M. Khobaib
Download or read book Role of Environment in Elevated Temperature Crack Growth Behavior of Renè N4 Single Crystal written by M. Khobaib and published by . This book was released on 1990 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustained load creep and fatigue crack growth tests have been conducted over a temperature range of 870 to 1038°C for single-crystal (SC) Renè N4 nickel-base superalloy.Tests were conducted in both laboratory air and an inert environment of a vacuum of 10-5 torr under similar conditions to understand the role of environment in elevated temperature crack growth behavior of this material. Mini-compact tension type specimens were fabricated with orientation [001] parallel to the loading axis and [100] direction parallel to the crack growth direction. The creep crack growth rate in laboratory air at 870°C was found to be nearly an order of magnitude higher as compared to tests conducted in a vacuum of 10-5 torr. However, in fatigue at a stress ratio of 0.1 and a frequency of 1.0 Hz, the crack growth rate was found to be somewhat higher in vacuum as compared to growth rates obtained from tests in laboratory air. A number of constant K tests were conducted with different frequencies of 0.1 and 0.01 Hz and several hold-times to investigate the time-dependent effects. Fractographic studies of the fatigue crack growth specimens tested in laboratory air and vacuum did not show any distinct differences in failure mechanism. However, interdendritic failure was observed for creep specimens tested in laboratory air, while the fracture surface obtained from vacuum tests showed crystallographic features.
Book Synopsis Fatigue Crack Growth Behavior of PWA 1484 Single Crystal Superalloy at Elevated Temperatures by : Jack Telesman
Download or read book Fatigue Crack Growth Behavior of PWA 1484 Single Crystal Superalloy at Elevated Temperatures written by Jack Telesman and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented at the International Gas Turbine and Aeroengine Congress & Exposition, Houston, Texas - June 5-8, 1995.
Download or read book Fracture Mechanics written by D. T. Read and published by ASTM International. This book was released on 1988 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fatigue-crack Propagation in Several Titanium and Stainless-steel Alloys and One Superalloy by : C. M. Hudson
Download or read book Fatigue-crack Propagation in Several Titanium and Stainless-steel Alloys and One Superalloy written by C. M. Hudson and published by . This book was released on 1964 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Superalloys 2012 written by Eric S. Huron and published by John Wiley & Sons. This book was released on 2012-10-02 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt: A superalloy, or high-performance alloy, is an alloy that exhibits excellent mechanical strength at high temperatures. Superalloy development has been driven primarily by the aerospace and power industries. This compilation of papers from the Twelfth International Symposium on Superalloys, held from September 9-13, 2012, offers the most recent technical information on this class of materials.
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1989 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Elevated Temperature Fatigue Crack Growth in a Nickel Base Superalloy Under Dwell Conditions by : J. Byrne
Download or read book Elevated Temperature Fatigue Crack Growth in a Nickel Base Superalloy Under Dwell Conditions written by J. Byrne and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmentally Assisted Cracking by : W. Barry Lisagor
Download or read book Environmentally Assisted Cracking written by W. Barry Lisagor and published by ASTM International. This book was released on 1990 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers included topics of phenomena, basic mechanisms, modeling, test methodologies, materials performance, engineering applications and service experience and failures and reflects the current emphasis with regard to material/environment systems.
Book Synopsis Short Fatigue Crack Growth in a Nickel-base Superalloy at Room and Elevated Temperature by : J. C. Healy
Download or read book Short Fatigue Crack Growth in a Nickel-base Superalloy at Room and Elevated Temperature written by J. C. Healy and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Low Cycle Fatigue by : Harvey D. Solomon
Download or read book Low Cycle Fatigue written by Harvey D. Solomon and published by ASTM International. This book was released on 1988 with total page 1289 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanisms and Modelling of Environment-Dependent Fatigue Crack Growth in a Nickel Based Superalloy by : H. Ghonem
Download or read book Mechanisms and Modelling of Environment-Dependent Fatigue Crack Growth in a Nickel Based Superalloy written by H. Ghonem and published by . This book was released on 1991 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: At loading frequencies below that of the transitional frequency level, which is typical of mission cycles of jet engines, the elevated temperature fatigue crack growth process in Alloy 718 is viewed to be fully environment-dependent. Of all the crack growth stages, this process, while is the most critical in high temperature application due to its highly accelerated crack growth rate, is the least studied or understood. The objective of this research program is to focus on the understanding or the mechanism controlling this oxidation-dependent stage in order to develop the ability to predict its associated crack growth performance under different environment conditions. For this purpose, three major studies have been carried out; the first was to provide evidence of the existence of the fully environment-dependent stage in which the crack growth rate would be equal to the oxygen penetration rate at the crack tip. The second study was to establish a crack tip oxidation mechanism on the basis of material, environmental and loading parameters interactions in the crack tip region. The last objective of this program is to establish a micromechanical based quantitative model to predict the environmentally-dominated crack growth stage.
Download or read book Engine Structures written by and published by . This book was released on 1988 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Temperature Fatigue Crack Growth Behavior of Alloy 10 by :
Download or read book High Temperature Fatigue Crack Growth Behavior of Alloy 10 written by and published by . This book was released on 2001 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Superalloys written by Roger C. Reed and published by Cambridge University Press. This book was released on 2008-07-31 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superalloys are unique high-temperature materials used in gas turbine engines, which display excellent resistance to mechanical and chemical degradation. This book introduces the metallurgical principles which have guided their development. Suitable for graduate students and researchers, it includes exercises and additional resources at www.cambridge.org/9780521859042.
Book Synopsis Fatigue Crack Propagation in Single Crystal Superalloys by : Oliver Richard Murphy
Download or read book Fatigue Crack Propagation in Single Crystal Superalloys written by Oliver Richard Murphy and published by . This book was released on 1987 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Superalloys 2020 written by Sammy Tin and published by Springer Nature. This book was released on 2020-08-28 with total page 1098 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 14th International Symposium on Superalloys (Superalloys 2020) highlights technologies for lifecycle improvement of superalloys. In addition to the traditional focus areas of alloy development, processing, mechanical behavior, coatings, and environmental effects, this volume includes contributions from academia, supply chain, and product-user members of the superalloy community that highlight technologies that contribute to improving manufacturability, affordability, life prediction, and performance of superalloys.