Prediction Of The Creep Fatigue Lifetime Of Alloy 617 PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Prediction Of The Creep Fatigue Lifetime Of Alloy 617 PDF full book. Access full book title Prediction Of The Creep Fatigue Lifetime Of Alloy 617.
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2014 |
| Genre | : |
| ISBN | : |
Download Prediction of the Creep-Fatigue Lifetime of Alloy 617 Book in PDF, ePub and Kindle
A relatively simple method using the nominal constant average stress information and the creep rupture model is developed to predict the creep-fatigue lifetime of Alloy 617, in terms of time to rupture. The nominal constant average stress is computed using the stress relaxation curve. The predicted time to rupture can be converted to number of cycles to failure using the strain range, the strain rate during each cycle, and the hold time information. The predicted creep-fatigue lifetime is validated against the experimental measurements of the creep-fatigue lifetime collected using conventional laboratory creep-fatigue tests. High temperature creep-fatigue tests of Alloy 617 were conducted in air at 950°C with a tensile hold period of up to 1800s in a cycle at total strain ranges of 0.3% and 0.6%. It was observed that the proposed method is conservative in that the predicted lifetime is less than the experimentally determined values. The approach would be relevant to calculate the remaining useful life to a component like a steam generator that might fail by the creep-fatigue mechanism.
| Author | : |
| Publisher | : |
| Total Pages | : 29 |
| Release | : 2015 |
| Genre | : |
| ISBN | : |
Download Creep-Fatigue Behavior of Alloy 617 at 850 and 950°C, Revision 2 Book in PDF, ePub and Kindle
Alloy 617 is the leading candidate material for an Intermediate Heat Exchanger (IHX) of the Very High Temperature Reactor (VHTR). To evaluate the behavior of this material in the expected service conditions, strain-controlled cyclic tests including hold times up to 9000 s at maximum tensile strain were conducted at 850 and 950 degrees C. At both temperatures, the fatigue resistance decreased when a hold time was added at peak tensile strain. The magnitude of this effect depended on the specific mechanisms and whether they resulted in a change in fracture mode from transgranular in pure fatigue to intergranular in creep-fatigue for a particular temperature and strain range combination. Increases in the tensile hold duration beyond an initial value were not detrimental to the creep-fatigue resistance at 950 degrees C but did continue to degrade the lifetimes at 850 degrees C.
| Author | : Michael R. Mitchell |
| Publisher | : ASTM International |
| Total Pages | : 495 |
| Release | : 1992 |
| Genre | : Fracture mechanics |
| ISBN | : 0803114230 |
Download Advances in Fatigue Lifetime Predictive Techniques Book in PDF, ePub and Kindle
Twenty-seven papers from fatigue researchers and practitioners review in detail recent progress in the development of methods to predict fatigue performance of materials and structures and to assess the extent to which these new methods are finding their way into practice. The papers, from the ASTM
| Author | : Ryuichi Ohtani |
| Publisher | : |
| Total Pages | : 304 |
| Release | : 1988 |
| Genre | : Technology & Engineering |
| ISBN | : |
Download High Temperature Creep-fatigue Book in PDF, ePub and Kindle
| Author | : |
| Publisher | : |
| Total Pages | : 32 |
| Release | : 2015 |
| Genre | : |
| ISBN | : |
Download Progress Report on Long Hold Time Creep Fatigue of Alloy 617 at 850°C. Book in PDF, ePub and Kindle
Alloy 617 is the leading candidate material for an intermediate heat exchanger for the very high temperature reactor. To evaluate the behavior of this material in the expected service conditions, strain-controlled cyclic tests that include long hold times up to 240 minutes at maximum tensile strain were conducted at 850°C. In terms of the total number of cycles to failure, the fatigue resistance decreased when a hold time was added at peak tensile strain. Increases in the tensile hold duration degraded the creep-fatigue resistance, at least to the investigated strain controlled hold time of up to 60 minutes at the 0.3% strain range and 240 minutes at the 1.0% strain range. The creep-fatigue deformation mode is considered relative to the lack of saturation, or continually decreasing number of cycles to failure with increasing hold times. Additionally, preliminary values from the 850°C creep-fatigue data are calculated for the creep-fatigue damage diagram and have higher values of creep damage than those from tests at 950°C.
| Author | : K.T. Rie |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 781 |
| Release | : 2012-12-06 |
| Genre | : Technology & Engineering |
| ISBN | : 9400934599 |
Download Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials Book in PDF, ePub and Kindle
In 1979 the first InternationalSymposium on Low CycleFatigue and Elasto-Plastic Behaviour of Materials was held in Stuttgart, FRG. Since then research in low cycle fatigue has proceeded rapidly. The vital interest of engineers and researchers in communicating the rapid advances in the ongoing research in low cycle fatigue has encouraged me to initiate again the Second International Conference which was held in Munich, FRG, 7-11 September 1987. Failure in low cycle fatigue represents a serious problem in the design and opera tion of highly stressed structures. Under complex loading and environmental cir cumstances, especially for high temperature services, reliable life prediction can not be expected without detailed consideration of the failure mechanism and with out extensive use of mechanistic approaches. The purpose of this conference was to provide a forum to discuss the advances in recent research in the field of low cycle fatigue. The conference was intended to help to further bridge the gap between those who are involved in basic research, and the engineers who have to perform the design of highly stressed structural components.
| Author | : K.T. Rie |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 911 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 940112860X |
Download Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials—3 Book in PDF, ePub and Kindle
Proceeds of the Third International Conference on Low Cycle Fatigue and Elasto-plastic Behaviour of Materials, Berlin Congress Center, Berlin, Germany, 7-11 September 1992
| Author | : E. Bachelet |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 930 |
| Release | : 1990-10-15 |
| Genre | : Science |
| ISBN | : 9780792309260 |
Download Bachelet: high temp- erature mater Book in PDF, ePub and Kindle
Themes reflect the work carried out within the framework of COST-501 and of COST-505 the latter being concerned with materials for steam turbines and the first results of the concerted action COST-501/II 'High temperature materials for power engineering' initiated in 1988.
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2013 |
| Genre | : |
| ISBN | : |
Download Creep-Fatigue Behavior of Alloy 617 at 850 and 950 Book in PDF, ePub and Kindle
Alloy 617 is the leading candidate material for an.
| Author | : John K Tien |
| Publisher | : Elsevier |
| Total Pages | : 789 |
| Release | : 2012-12-02 |
| Genre | : Technology & Engineering |
| ISBN | : 0323140386 |
Download Superalloys, Supercomposites and Superceramics Book in PDF, ePub and Kindle
Superalloys, Supercomposites and Superceramics reviews the state of superalloy technology and some of the more salient aspects of alternative high temperature systems such as superceramics and supercomposites. Superalloy topics range from resource availability to advanced processing such as VIM, VAR, and VADAR, along with investment casting and single crystal growth, new superplastic forming techniques and powder metallurgy, structure property relationships, strengthening mechanisms, oxidation, hydrogen embrittlement, and phase predictions. This book is comprised of 22 chapters that explore key issues of high temperature materials in a synergistic manner. The first chapter reflects on the growth of the superalloy industry and its technology over the past 40 years. The discussion then turns to some of the trends in superalloy development, focusing on what is understood to be meant by the term strategic materials and the current status of resources and reserves in the United States. Particular attention is given to the supply sources and availability of strategic materials. The results achieved from the research program undertaken by NASA Lewis Research Center named Conservation Of Strategic Aerospace Materials (COSAM) are also presented. The chapters that follow explore alternative high temperature systems such as intermetallics, fiber reinforced superalloys, and the processing and high temperature properties of ceramics and carbon-carbon composites. This book will be a valuable resource for professionals and graduate students interested in learning about superalloys, supercomposites, and superceramics.
