Download or read book Vacuum Thermal Mechanical Fatigue Behavior of Two Iron Base Alloys written by KD. Sheffler and published by . This book was released on 1976 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Isothermal and thermomechanical fatigue tests conducted in ultrahigh vacuum on Type 304 stainless steel and A286 alloy have shown significant effects of frequency and combined temperature-strain cycling on fatigue life. Results of isothermal tests at elevated temperatures in the creep range indicate reduced life with decreasing frequency. Combined temperature-strain cycling further reduces fatigue life with respect to isothermal lives measured at the maximum temperature of the applied thermal cycle. Life reductions observed with in-phase thermal cycling (tensile deformation at high temperature, compressive deformation at low temperature) are attributed to grain boundary ratcheting effects resulting from unreversed tensile grain boundary sliding. Results of out-of-phase tests (compressive deformation at high temperature, tensile deformation at low temperature) were confused in Type 304 stainless steel by the occurrence of geometric instabilities in the hourglass specimens. In the low ductility A286 alloy, where geometric instabilities were not observed, out-of-phase life reductions are attributed to grain boundary cavitation resulting from unreversed compressive grain boundary displacements (ratcheting) which could not be accomodated by intragranular deformation of the high-strength low-ductility matrix.

Download or read book Thermal Fatigue of Materials and Components written by David A. Spera and published by ASTM International. This book was released on 1976 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Low cycle Thermal Fatigue written by Gary R. Halford and published by . This book was released on 1986 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1994 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Technical Paper written by and published by . This book was released on 1980 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatigue Mechanisms written by J. T. Fong and published by ASTM International. This book was released on 1979 with total page 913 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book Characterization of Low Cycle High Temperature Fatigue by the Strainrange Partitioning Method written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Structures and Materials Panel and published by . This book was released on 1978 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ASM Specialty Handbook written by Joseph R. Davis and published by ASM International. This book was released on 1997-01-01 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials covered include carbon, alloy and stainless steels; alloy cast irons; high-alloy cast steels; superalloys; titanium and titanium alloys; refractory metals and alloys; nickel-chromium and nickel-thoria alloys; structural intermetallics; structural ceramics, cermets, and cemented carbides; and carbon-composites.

Download or read book Time Dependent Fracture written by A.S. Krausz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: The understanding of time dependent crack propagation processes occupies a central place in the study of fracture. It also encompasses a wide range of conditions: failure under sustained loading in a corrosive environment, fracture under cyclic loading in non-degrading and in corrosive environment, and rupture at high temperature. This list covers probably 90% of the failures that occur in engineering practice. The process of time dependent fracture is controlled by the physics of atomic interaction changes; it is strongly influenced by the micro structure; and affected by the interaction of the material with the mechanical (load, displacement), the thermal (temperature), and the chemical or radiation environment. To be able to control crack propagation the development of testing methods and the understanding of the industrial environment is essential. The conference was organized in this context. A call was issued for contributions to the following topics. THERMAL ACTIVATION. Theoretical papers dealing with the modification of fracture mechanics to accommodate thermally activated processes. TIME DEPENDENT MICRO-PROCESSES. Presentations covering both the theoretical and observational aspects of creep and fatigue damage in materials whose microstructures may exert a significant influence on crack growth. INDUSTRIAL APPLICATIONS. Submissions describing the practical application of fracture mechanics and damage tolerance analysis to the determination of useful operating lives. x ENVIRONMENTAL EFFECTS. Papers dealing with engineering materials and/or components exposed to aggressive environments, with and without temperature effects. The response was gratifying. Leading experts responded; the organizers of the conference are grateful for the large number of excellent contributions.

Download or read book The Partitioned Strainrange Fatigue Behavior of Coated and Uncoated MAR M 302 at 1000 C 1832 F in Ultrahigh Vacuum written by and published by . This book was released on 1974 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of Creep Damage on the Low Cycle Thermal mechanical Fatigue Behavior of Two Tantalum Base Alloys written by Keith D. Sheffler and published by . This book was released on 1972 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Temperature Fatigue written by R.P. Skelton and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: About 35 years ago, thermal fatigue was identified as an important phenomenon which limited the lifetime of high temperature plant. In the intervening years many investigations have been carried out, primarily to give guidance on likely endurance (especially in the presence of time dependent deformation) but latterly, with the introduction of sophisticated testing machines, to provide knowledge of the underlying mechanisms of failure. A previous edited book (Fatigue at High Temperature, Elsevier Applied Science Publishers, 1983) summarised the state-of-the-art of high temperature fatigue testing and examined the factors influencing life, such as stress state, environment and microstructural effects. It also considered, in some detail, cyclic crack growth as a more rigorous approach to life limitation. The aim of the present volume (which in style and format follows exactly the same lines as its predecessor) is once again to pursue the desire to translate detailed laboratory knowledge into engineering design and assessment. There is, for example, a need to consider the limitations of the laboratory specimen and its relationship with engineering features. Many design procedures still rely on a simple endurance approach based on failure of a smooth specimen, and this is taken to indicate crack initiation in the component. In this volume, therefore, crack propagation is covered only incidentally, emphasis being placed instead on basic cyclic stress strain properties, non-isothermal behaviour, metallography, failure criteria and the need for agreed testing procedures.

Download or read book Metals Abstracts written by and published by . This book was released on 1991 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Research on the Strength and Fracture of Materials written by D.M.R. Taplin and published by Elsevier. This book was released on 2013-10-22 with total page 873 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Research on the Strength and Fracture of Materials: Volume 1s—An Overview contains the proceedings of the Fourth International Conference on Fracture held at the University of Waterloo, Canada, in June 1977. The papers review the state of the art with respect to fracture in a wide range of materials such as metals and alloys, polymers, ceramics, and composites. This volume is comprised of 40 chapters and opens with a discussion on progress in the development of elementary fracture mechanism maps and their application to metal deformation processes, along with micro-mechanisms of fracture and the fracture toughness of engineering alloys. The next section is devoted to the fracture of large-scale structures such as steel structures, aircraft, cargo containment systems, nuclear reactors, and pressure vessels. Fracture at high temperatures and in sensitive environments is then explored, paying particular attention to creep failure by cavitation under non-steady conditions; the effects of hydrogen and impurities on brittle fracture in steel; and mechanism of embrittlement and brittle fracture in liquid metal environments. The remaining chapters consider the fracture of non-metallic materials as well as developments and concepts in the application of fracture mechanics. This book will be of interest to metallurgists, materials scientists, and structural and mechanical engineers.