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Author : Fereydun Bahrami
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book The Effect of Microstructure on the Strength and Fatigue Properties of Low Alloy Steels written by Fereydun Bahrami and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : RA. DePaul
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (125 download)
Download or read book Some Microstructural and Alloying Effects Upon Low-Cycle Fatigue Life of Pressure Vessel Steels written by RA. DePaul and published by . This book was released on 1969 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Loading by constant deflection reversed bending was applied to Lehigh cantilever fatigue specimens of a plain carbon steel, A-516, and three low-alloy steels, A-302, A-387B, and HY-80. Fatigue life over the 5000 to 100,000 cycle range was investigated at a loading frequency of 200 cpm. The effect of microstructure was observed by comparing the fatigue resistance of specimens of equal tensile strength but different heat treatment histories. Normalized structures proved to be superior to the corresponding spray quenched and tempered conditions when using total strain range as the test parameter. Where similar structures were compared, the 100,000 cycle fatigue life was found to be related to tensile strength. The fatigue resistance of the low-alloy steels was influenced markedly by heat treatment while the plain carbon steel essentially was unaffected. Increased alloy content altered the slope of the fatigue curve such that the plain carbon steel tends to be superior in the 5000 cycle range, while the low-alloy steels excel above the 20,000 cycle region. This results in a grouping of the curves as to steel composition.
Author : David Michael Kindel
Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (12 download)
Download or read book Effect of Microstructure on the Fracture Behaviour of High-strength Low-alloy Steels written by David Michael Kindel and published by . This book was released on 1984 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : José A.F.O. Correia
Publisher : Springer
ISBN 13 : 3030139808
Total Pages : 413 pages
Book Rating : 4.0/5 (31 download)
Download or read book Mechanical Fatigue of Metals written by José A.F.O. Correia and published by Springer. This book was released on 2019-05-07 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the XIX International Colloquium on Mechanical Fatigue of Metals, held at the Faculty of Engineering of the University of Porto, Portugal, 5-7 September 2018. This International Colloquium facilitated and encouraged the exchange of knowledge and experiences among the different communities involved in both basic and applied research in the field of the fatigue of metals, looking at the problem of fatigue exploring analytical and numerical simulative approaches. Fatigue damage represents one of the most important types of damage to which structural materials are subjected in normal industrial services that can finally result in a sudden and unexpected abrupt fracture. Since metal alloys are still today the most used materials in designing the majority of components and structures able to carry the highest service loads, the study of the different aspects of metals fatigue attracts permanent attention of scientists, engineers and designers.
Author : C. Moura Branco
Publisher : Springer Science & Business Media
ISBN 13 : 9400922779
Total Pages : 982 pages
Book Rating : 4.4/5 (9 download)
Download or read book Advances in Fatigue Science and Technology written by C. Moura Branco and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 982 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the edited version of lectures and selected research contributions presented at the NATO ADVANCED STUDY INSTITUTE on ADVANCES IN FATIGUE SCIENCE AND TECHNOLOGY. held in Alvor. Portugal, 4th to 15th of April 1988. and organized by CEMUL - Center of Mechanics and Materials of The Technical University of Lisbon. The Institute was attended by 101 participants, including 15 lecturers. from 14 countries. The participants were leading scientists and engineers from universities, research institutions and industry. and also Ph.D~ students. Some participants presented papers during the Institute reporting the state-of-art of their research projects. All the sessions wel'e very active and quite extensive discussions on scientific aspects took place during the Institute. The Advanced Study Institute provided a forum for interaction among eminent scientists and engineers. from different schools of thought and young researchers. The Institute addressed the foundations and current state of the art of essential aspects related to fatigue science and technology, namely: Short Cracks, Metallurgical Aspects, Environmental Fatigue, Threshold Behaviour, Notch Behaviour. Creep and Fatigue Interactions at High Temperature, Multiaxial Fatigue, Low Cycle Fatigue, Methodology of Fatigue Testing, Variable Amplitude Fatigue, Fatigue of Advanced Materials. Elastic-Plastic Fatigue, and several engineering applications such as welded joints, energy systems, offshore structures, automotive industry, machine and engine components. This book is organized in three parts: Part I: Fundamentals of Fatigue Part II: Engineering Applications Part III: Research Contributions The research contributions covered most of the areas referred above.
Author : Steven Samuel Hansen
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (25 download)
Download or read book The Effect of Microstructure on the Strength of Two High-strength, Low-alloy Steels written by Steven Samuel Hansen and published by . This book was released on 1973 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ricardo Branco
Publisher : MDPI
ISBN 13 : 3038972045
Total Pages : 220 pages
Book Rating : 4.0/5 (389 download)
Download or read book Mechanical Behavior of High-Strength Low-Alloy Steels written by Ricardo Branco and published by MDPI. This book was released on 2018-10-12 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Mechanical Behavior of High-Strength Low-Alloy Steels" that was published in Metals
Author : Syavash Ensha
Publisher :
ISBN 13 :
Total Pages : 198 pages
Book Rating : 4.:/5 (227 download)
Download or read book The Effect of Microstructure on the Fracture Toughness of Low-alloy Steels written by Syavash Ensha and published by . This book was released on 1974 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theoretical model has been used to relate the cleavage fracture toughness of the low-alloy steels to their microstructure. The cleavage fracture toughness of low-alloy steels depends upon three metallurgical parameters: the microscopic cleavage strength, the yield strength, and the effective root radius. Variations in fracture toughness with microstructure can be explained through the effect of the microstructure on these parameters. The major objective of this investigation has been the study of the effect of microstructural variables on these parameters, and hence the effect of microstructure on fracture toughness. The theoretical model for the cleavage fracture toughness of the low-alloy steels can be successfully applied provided the assumptions are not strongly violated. This requires low microscopic cleavage strength/yield strength ratio values and low work-hardening rates. Lower temperatures and higher strain rates both favor these conditions. (Modified author abstract).
Author : Jerry A. Wear
Publisher :
ISBN 13 :
Total Pages : 348 pages
Book Rating : 4.:/5 (123 download)
Download or read book The Effect of Microstructure on the Fatigue Properties of a .40/.50 Carbon Steel written by Jerry A. Wear and published by . This book was released on 1975 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : T. Kondo
Publisher :
ISBN 13 :
Total Pages : 31 pages
Book Rating : 4.:/5 (125 download)
Download or read book Effect of Microstructure and Strength of Low-Alloy Steels on Cyclic Crack Growth in High-Temperature Water written by T. Kondo and published by . This book was released on 1983 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: The microstructural variability existing in weld heat-affected zones (HAZ) of SA533 Grade B steel has a strong influence on the fatigue crack growth rate of the material in a simulated nuclear reactor environment. In particular, considerably high susceptibility to environmentally enhanced cracking has been noted in the coarse grains of tempered martensite. This phenomenon is considered to be important not only in connection with predicting the cracking of the weld HAZ structures but also in elucidating the mechanism of crack growth enhancement in the high-temperature water environment. The materials used in the study are primarily SA533 Grade B and several other low-alloy steels including SA387, SA542, SA543, JIS SPV 46Q, and AISI 4340. Different heat treatments were given to these alloys to obtain a variety of microstructures and strengths. The results obtained show a general tendency for the crack growth rates of higher-strength materials to be more substantially accelerated in the simulated boiling-water reactor (BWR) water environment as the stress ratio is shifted from 0.1 to 0.5. In order to explore the operation of the cracking mechanism under dynamic loading, slow strain rate tests (SSRTs) were also performed. As with the cyclic crack growth rate tests, the materials with higher yield strengths exhibited highly enhanced crack growth rates and showed Ji values much reduced compared with those obtained in 288°C air. Furthermore, the crack growth rates under cyclic loading are directly compared with those obtained by the SSRT technique in terms of time-based crack growth rate in the water environment and in air by using plots of (da/dt)E versus (da/dt)air where (da/dt)E is the time-based crack growth rate in an aggressive environment and (da/dt)air is the rate in air. A satisfactory correspondence can be obtained between corrosion-fatigue test crack growth rates and those obtained by SSRTs.
Author : J. M. Barranco
Publisher :
ISBN 13 :
Total Pages : 41 pages
Book Rating : 4.:/5 (227 download)
Download or read book The Effect of Microstructure and Aging Condition on the Fatigue Characteristics of the 18% Ni Maraging Steels written by J. M. Barranco and published by . This book was released on 1965 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smooth and notched rotating beam fatigue characteristics at various strength levels are presented over the range of 1000-100000 cycles-to-failure for 250 and 300 grade 18% Ni maraging steels and a modified 4330 alloy. Two different heats of each of the maraging steels having large differences in ductility and toughness due to microsegregation are examined. In addition, the effects of under- and over-aging on fatigue properties are also studied. The microstructural segregation in the maraging steel showed no detrimental effect on the smooth or notched fatigue properties even though the ductility and toughness values were greatly reduced. Underaging the maraging steels was found to drastically impair the notched fatigue behavior. No correlation was found between notched fatigue behavior, as expressed by notched strength reduction factor, and the standard engineering mechanical properties of ductility and toughness. (Author).
Author : Jerry Alan Wear
Publisher :
ISBN 13 :
Total Pages : 188 pages
Book Rating : 4.:/5 (227 download)
Download or read book The Effect of Microstructure on the Fatigue Properties of a .40/150 Carbon Steel written by Jerry Alan Wear and published by . This book was released on 1975 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the primary methods used today in changing the properties of materials is heat treating (changing the microstructure). However, little work has been done to determine the effect of microstructure on the fatigue properties of a material. Work performed on four microstructures of a .40/.50 carbon steel is reported. The fatigue properties of the four microstructures were compared in a traditional manner (S-N data) and by measuring crack propagation in center cracked panels (2a-N data). An effect of microstructure on fatigue was observed as a 'stacking and sorting' of both the S-N and 2a-N data.
Author : Jian-Huei Feng
Publisher :
ISBN 13 :
Total Pages : 272 pages
Book Rating : 4.:/5 (367 download)
Download or read book The Effect of Low Temperature Tempering on the Fatigue and Toughness Properties of High Strength Alloy Steels written by Jian-Huei Feng and published by . This book was released on 1996 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Steve Swaringen
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (412 download)
Download or read book The Influence of Thermal-mechanical History on Fatigue of High Strength Low Alloy Steels written by Steve Swaringen and published by . This book was released on 1981 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. Caillard
Publisher : Elsevier
ISBN 13 : 0080542786
Total Pages : 453 pages
Book Rating : 4.0/5 (85 download)
Download or read book Thermally Activated Mechanisms in Crystal Plasticity written by D. Caillard and published by Elsevier. This book was released on 2003-09-08 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: KEY FEATURES: A unified, fundamental and quantitative resource. The result of 5 years of investigation from researchers around the world New data from a range of new techniques, including synchrotron radiation X-ray topography provide safer and surer methods of identifying deformation mechanisms Informing the future direction of research in intermediate and high temperature processes by providing original treatment of dislocation climb DESCRIPTION: Thermally Activated Mechanisms in Crystal Plasticity is a unified, quantitative and fundamental resource for material scientists investigating the strength of metallic materials of various structures at extreme temperatures. Crystal plasticity is usually controlled by a limited number of elementary dislocation mechanisms, even in complex structures. Those which determine dislocation mobility and how it changes under the influence of stress and temperature are of key importance for understanding and predicting the strength of materials. The authors describe in a consistent way a variety of thermally activated microscopic mechanisms of dislocation mobility in a range of crystals. The principles of the mechanisms and equations of dislocation motion are revisited and new ones are proposed. These describe mostly friction forces on dislocations such as the lattice resistance to glide or those due to sessile cores, as well as dislocation cross-slip and climb. They are critically assessed by comparison with the best available experimental results of microstructural characterization, in situ straining experiments under an electron or a synchrotron beam, as well as accurate transient mechanical tests such as stress relaxation experiments. Some recent attempts at atomistic modeling of dislocation cores under stress and temperature are also considered since they offer a complementary description of core transformations and associated energy barriers. In addition to offering guidance and assistance for further experimentation, the book indicates new ways to extend the body of data in particular areas such as lattice resistance to glide.
Author : Kaushal R. Prayakarao
Publisher :
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.:/5 (127 download)
Download or read book Microstructure-fracture and Fatigue Behavior of Ti-Nb High Strength Low Alloy (HSLA) Steels written by Kaushal R. Prayakarao and published by . This book was released on 2012 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stanley Douglas Gralak
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (74 download)
Download or read book The Fatigue Properties of Several Low Alloy High Yield-strength Steels written by Stanley Douglas Gralak and published by . This book was released on 1937 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
