Influence Of Aging On High Temperature Creep Crack Growth In Type 304h Stainless Steel
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Influence Of Aging On High Temperature Creep Crack Growth In Type 304h Stainless Steel
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Author : C. Becht
language : en
Publisher:
Release Date : 1988
Influence Of Aging On High Temperature Creep Crack Growth In Type 304h Stainless Steel written by C. Becht and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Aging categories.
Stress rupture tests on smooth and notched tensile bars and creep crack growth measurements under both static and cyclic loading have been made on virgin (new) solution annealed and naturally aged Type 304H stainless steel at 760C. The naturally aged material was taken from a component which had been in service for 15 years at temperatures in the range 690 to 725C. It is known that some deterioration in properties occurs with aging in Type 304 stainless steel and that this could affect sensitivity to cracking. This paper shows that crack growth rate can be characterized in terms of the creep fracture mechanics parameter C* and that the behavior of the new and aged materials can be rationalized in terms of their creep ductilities and the influence of ductility on the state of stress developed at a crack tip. Furthermore, the paper demonstrates that lower and upper bound crack growth rates can be estimated approximately from uniaxial creep rupture data.
Nonlinear Fracture Mechanics Time Dependent Fracture
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Author : Ashok Saxena
language : en
Publisher: ASTM International
Release Date : 1988
Nonlinear Fracture Mechanics Time Dependent Fracture written by Ashok Saxena and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Creep categories.
Advances In Fracture Research
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Author : K. Salama
language : en
Publisher: Elsevier
Release Date : 2013-10-22
Advances In Fracture Research written by K. Salama and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Technology & Engineering categories.
Held every four years, the International Congress on Fracture is the premier international forum for the exchange of ideas between scientists and engineers involved in producing and using materials resistant to fracture and fatigue. This major six-volume work which forms the proceedings of the Seventh International Congress on Fracture therefore provides the most comprehensive account available of the current status of research into fracture and fatigue, and the application of this knowledge to the design, fabrication and operation of materials and structures. As such, it will be an essential reference for materials scientists and mechanical, structural, aeronautical and design engineers with an interest in fracture and its prevention.
High Temperature Component Life Assessment
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Author : G.A. Webster
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
High Temperature Component Life Assessment written by G.A. Webster and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Science categories.
The aim of this book is to investigate and explain the rapid advances in the characterization of high temperature crack growth behaviour which have been made in recent years, with reference to industrial applications. Complicated mathematics has been minimized with the emphasis placed instead on finding solutions using simplified procedures without the need for complex numerical analysis.
Materials For Advanced Power Engineering 1994
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Author : D. Coutsouradis
language : en
Publisher: Springer Science & Business Media
Release Date : 1994
Materials For Advanced Power Engineering 1994 written by D. Coutsouradis and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Science categories.
The role of energy in the modern world goes beyond mere technology and economics to influence welfare, the environment, the quality of life and, in broad terms, civilization itself. Since the Industrial Revolution, energy conservation technology has been at the forefront of the innovation required to satisfy the needs of mankind and, more than any other, this technology has always depended on the performance of the materials used.
Comprehensive Structural Integrity
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Author : Ian Milne
language : en
Publisher: Elsevier
Release Date : 2003-07-25
Comprehensive Structural Integrity written by Ian Milne and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-07-25 with Business & Economics categories.
The aim of this major reference work is to provide a first point of entry to the literature for the researchers in any field relating to structural integrity in the form of a definitive research/reference tool which links the various sub-disciplines that comprise the whole of structural integrity. Special emphasis will be given to the interaction between mechanics and materials and structural integrity applications. Because of the interdisciplinary and applied nature of the work, it will be of interest to mechanical engineers and materials scientists from both academic and industrial backgrounds including bioengineering, interface engineering and nanotechnology. The scope of this work encompasses, but is not restricted to: fracture mechanics, fatigue, creep, materials, dynamics, environmental degradation, numerical methods, failure mechanisms and damage mechanics, interfacial fracture and nano-technology, structural analysis, surface behaviour and heart valves. The structures under consideration include: pressure vessels and piping, off-shore structures, gas installations and pipelines, chemical plants, aircraft, railways, bridges, plates and shells, electronic circuits, interfaces, nanotechnology, artificial organs, biomaterial prostheses, cast structures, mining... and more. Case studies will form an integral part of the work.
High Temperature Fatigue Behaviour Of Austenitic Stainless Steel
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Author : Hugo Wärner
language : en
Publisher: Linköping University Electronic Press
Release Date : 2018-12-20
High Temperature Fatigue Behaviour Of Austenitic Stainless Steel written by Hugo Wärner and has been published by Linköping University Electronic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-20 with categories.
The global energy consumption is increasing and together with global warming from greenhouse gas emission, create the need for more environmental friendly energy production processes. Higher efficiency of biomass power plants can be achieved by increasing temperature and pressure in the boiler section and this would increase the generation of electricity along with the reduction in emission of greenhouse gases e.g. CO2. The power generation must also be flexible to be able to follow the demands of the energy market, this results in a need for cyclic operating conditions with alternating output and multiple start-ups and shut-downs. Because of the demands of flexibility, higher temperature and higher pressure in the boiler section of future biomass power plants, the demands on improved mechanical properties of the materials of these components are also increased. Properties like creep strength, thermomechanical fatigue resistance and high temperature corrosion resistance are critical for materials used in the next generation biomass power plants. Austenitic stainless steels are known to possess such good high temperature properties and are relatively cheap compared to the nickel-base alloys, which are already operating at high temperature cyclic conditions in other applications. The behaviour of austenitic stainless steels during these widened operating conditions are not yet fully understood. The aim of this licentiate thesis is to increase the knowledge of the mechanical behaviour at high temperature cyclic conditions for austenitic stainless steels. This is done by the use of thermomechanical fatigue- and creepfatigue testing at elevated temperatures. For safety reasons, the effect of prolonged service degradation is investigated by pre-ageing before mechanical testing. Microscopy is used to investigate the microstructural development and resulting damage behaviour of the austenitic stainless steels after testing. The results show that creep-fatigue interaction damage, creep damage and oxidation assisted cracking are present at high temperature cyclic conditions. In addition, simulated service degradation resulted in a detrimental embrittling effect due to the deterioration by the microstructural evolution.
Advances In Fracture Research Fatique Creep And Environmental Fracture
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Author :
language : en
Publisher:
Release Date : 1989
Advances In Fracture Research Fatique Creep And Environmental Fracture written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Fracture mechanics categories.
Failure Mechanisms In Alloys
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Author : George A. Pantazopoulos
language : en
Publisher: MDPI
Release Date : 2020-03-19
Failure Mechanisms In Alloys written by George A. Pantazopoulos and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-03-19 with Technology & Engineering categories.
The era of lean production and excellence in manufacturing, advancing with sustainable development, demands the rational utilization of raw materials and energy resources, adopting cleaner and environmentally-friendly industrial processes. In view of the new industrial revolution, through digital transformation, the exploitation of smart and sophisticated materials systems, the need of minimizing scrap and increasing efficiency, reliability and lifetime and, on the other hand, the pursuit of fuel economy and limitation of carbon footprint, are necessary conditions for the imminent growth in a highly competitive economy. Failure analysis is an interdisciplinary scientific topic, reflecting the opinions and interpretations coming from a systematic evidence-gathering procedure, embracing various important sectors, imparting knowledge, and substantiating improvement practices. The deep understanding of material/component role (e.g., rotating shaft, extrusion die, gas pipeline) and properties will be of central importance for fitness for purpose in certain industrial processes and applications. Finally, it is hoped and strongly believed that the accumulation of additional knowledge in the field of failure mechanisms and the adoption of the principles, philosophy, and deep understanding of failure analysis process approach will strongly promote the learning concept, as a continuously evolving process leading to personal and social progress and prosperity.
Effect Of Loading Rate And Thermal Aging On The Fracture Toughness Of Stainless Steel Alloys
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Author : WJ. Mills
language : en
Publisher:
Release Date : 1989
Effect Of Loading Rate And Thermal Aging On The Fracture Toughness Of Stainless Steel Alloys written by WJ. Mills and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Dynamic categories.
The effect of loading rate on the fracture toughness of Types 304 and 316 stainless-steel plate and Type 308 weld before and after thermal aging was characterized using both fracture mechanics and Charpy specimens. Aging at 566°C for 10 000 h reduced static Jc initiation toughness values for both wrought and weld metals by 10 to 20%, and tearing moduli were reduced by 20 to 30%. Under semi-dynamic and dynamic loading conditions, the fracture resistance was not decreased below the static response for either unaged or aged materials. The present results also demonstrated that the large degradation in Charpy V-notch impact energy after aging was not representative of the impact resistance for stainless-steel components containing cracks or crack-life defects. Fractographic examinations revealed that the large loss in Charpy energy was associated with aging-induced microstructural changes that substantially decreased the energy required to initiate a crack from a blunt notch. At very slow strain rates, creep crack growth was found to cause a significant degradation in fracture toughness.