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creep-fatigue interaction
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in Strain-Range Partitioning—Concepts and Analytical Methods
> Fatigue and Durability of Metals at High Temperatures
Published: 01 July 2009
Fig. 3.2 Schematic illustration of creep-fatigue interaction when tensile creep occurring along grain boundaries is reversed by compressive plasticity occurring along crystallographic slip planes
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Image
Published: 01 August 2005
Fig. 3.43 Creep-fatigue interaction effects on the isothermal cyclic life of AISI type 304 stainless steel tested in air at 650 °C (1200 °F), normal straining rate of 4 × 10 3 /s. Source: Ref 3.38
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Image
Published: 01 October 2011
Fig. 16.25 Schematic of cracking mechanisms with creep-fatigue interaction. (a) Fatigue cracking dominant. (b) Creep cracking dominant. (c) Creep damage influences fatigue crack growth. (d) Creep cracking and fatigue crack occur simultaneously.
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in Critique of Predictive Methods for Treatment of Time-Dependent Metal Fatigue at High Temperatures
> Fatigue and Durability of Metals at High Temperatures
Published: 01 July 2009
Fig. 8.21 Simplified schematic illustration of the creep-fatigue interaction when tensile creep occurring along grain boundaries is reversed by compressive plasticity occurring along crystallographic slip planes. (a) Laboratory specimen. (b) Two deformation systems. (c) Grain-boundary sliding
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Published: 01 November 2012
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Published: 01 December 1989
Fig. 4.28. Creep-rupture/low-cycle-fatigue damage interaction curve for 1Cr-Mo-V rotor steel at 540 °C (1000 °F) (after Ref 82 ).
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Published: 01 June 2008
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Published: 01 June 2008
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240265
EISBN: 978-1-62708-251-8
... fracture, namely, rupture, transgranular fracture, and intergranular fracture. The next section focuses on some of the metallurgical instabilities caused by overaging, intermetallic phase precipitation, and carbide reactions. Subsequent sections address creep life prediction and creep-fatigue interaction...
Abstract
Creep occurs in any metal or alloy at a temperature where atoms become sufficiently mobile to allow the time-dependent rearrangement of structure. This chapter begins with a section on creep curves, covering the three distinct stages: primary, secondary, and tertiary. It then provides information on the stress-rupture test used to measure the time it takes for a metal to fail at a given stress at elevated temperature. The major classes of creep mechanism, namely Nabarro-Herring creep and Coble creep, are then covered. The chapter also provides information on three primary modes of elevated fracture, namely, rupture, transgranular fracture, and intergranular fracture. The next section focuses on some of the metallurgical instabilities caused by overaging, intermetallic phase precipitation, and carbide reactions. Subsequent sections address creep life prediction and creep-fatigue interaction and the approaches to design against creep.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610415
EISBN: 978-1-62708-303-4
... prediction and related design methods and some of the factors involved in high-temperature fatigue, including creep-fatigue interaction and thermomechanical damage. constant-load creep curves creep deformation creep-fatigue interaction elevated-temperature fracture high-temperature fatigue stress...
Abstract
This chapter compares and contrasts the high-temperature behaviors of metals and composites. It describes the use of creep curves and stress-rupture testing along with the underlying mechanisms in creep deformation and elevated-temperature fracture. It also discusses creep-life prediction and related design methods and some of the factors involved in high-temperature fatigue, including creep-fatigue interaction and thermomechanical damage.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430325
EISBN: 978-1-62708-253-2
... tube fatigue, including mechanical or vibrational fatigue, corrosion fatigue, thermal fatigue, and creep-fatigue interaction. It discusses the causes, characteristics, and impacts of each type and provides several case studies. boiler tubes corrosion fatigue creep-fatigue interaction fatigue...
Abstract
Boiler tubes subjected to cyclic or fluctuating loads over extended periods of time are prone to fatigue failure. Fatigue can occur at relatively low stresses and is implicated in almost 80% of the tube failures in firetube boilers. This chapter covers the most common forms of boiler tube fatigue, including mechanical or vibrational fatigue, corrosion fatigue, thermal fatigue, and creep-fatigue interaction. It discusses the causes, characteristics, and impacts of each type and provides several case studies.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060173
EISBN: 978-1-62708-343-0
... Turbine component design 8.86 ABD ITC Interactive time-cycle fractions 8.78 ABD RCF Relaxation creep fatigue 8.87 ABE CDC Cumulative damage under creep 8.88 ABDE PFC Phenomenological fatigue creep 8.89 AE FCD Fatigue + creep damage mechanisms 8.90 A FNC...
Abstract
This chapter provides a detailed review of creep-fatigue analysis techniques, including the 10% rule, strain-range partitioning, several variants of the frequency-modified life equation, damage assessment based on tensile hysteresis energy, the OCTF (oxidation, creep, and thermomechanical fatigue) damage model, and numerous methods that make use of creep-rupture, crack-growth, and void-growth data. It also discusses the use of continuum damage mechanics and includes examples demonstrating the accuracy of each method as well as the procedures involved.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430147
EISBN: 978-1-62708-253-2
...-side erosion: Soot blower erosion Fly ash erosion Coal particle erosion Falling slag erosion Erosion due to steam cutting Fatigue: Mechanical fatigue Thermal fatigue Corrosion fatigue Creep-fatigue interaction Operation failures: Failures due to operational...
Abstract
This chapter provides an outline of the failure modes and mechanisms associated with most boiler tube failures in coal-fired power plants. Primary categories include stress rupture failures, water-side corrosion, fire-side corrosion, fire-side erosion, fatigue, operation failures, and insufficient quality control.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490111
EISBN: 978-1-62708-340-9
... steels ( Ref 20 ). Fig. 4.27. Comparison of crack-growth behavior of Fe-Ni alloy A-286 in air and vacuum at 595 °C (1100 °F) ( Ref 69 ). Fig. 4.28. Creep-rupture/low-cycle-fatigue damage interaction curve for 1Cr-Mo-V rotor steel at 540 °C (1000 °F) (after Ref 82 ). Fig. 4.29...
Abstract
This chapter describes the phenomenological aspects of fatigue and how to assess its effect on the life of components operating in high-temperature environments. It explains how fatigue is measured and expressed and how it is affected by loading conditions (stress cycles, amplitude, and frequency) and factors such as temperature, material defects, component geometry, and processing history. It provides a detailed overview of the damage mechanisms associated with high-cycle and low-cycle fatigue as well as thermal fatigue, creep-fatigue, and fatigue-crack growth. It also demonstrates the use of tools and techniques that have been developed to quantify fatigue-related damage and its effect on the remaining life of components.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060043
EISBN: 978-1-62708-343-0
... 3.1 Fig. 3.3 Simple cyclic deformation models for strain-range partitioning Fig. 3.2 Schematic illustration of creep-fatigue interaction when tensile creep occurring along grain boundaries is reversed by compressive plasticity occurring along crystallographic slip planes...
Abstract
Strain-range partitioning is a method for assessing the effects of creep fatigue based on inelastic strain paths or strain reversals. The first part of the chapter defines four distinct strain paths that can be used to model any cyclic loading pattern and describes the microstructural damages associated with each of the four basic loading cycles. The discussion then turns to fatigue life prediction for different types of materials and more realistic loading conditions, particularly those in which hysteresis loops have more than one strain-range component. To that end, the chapter considers two cases. In one, the relationship between strain range and cyclic life is established from test data. In the other, a rule is required to determine the damage of each concurrent strain and the total damage of the cycle is used to predict creep-fatigue life. The chapter presents several such damage rules and discusses their applicability in different situations.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060155
EISBN: 978-1-62708-343-0
... by multiaxial loading and set practical limits on the problem they intend to treat. References References 7.1 Manson S.S. and Halford G.R. , Treatment of Multiaxial Creep-Fatigue by Strain-range Partitioning . 1976 ASME-MPC Symposium on Creep-Fatigue Interaction , MPC-3, Curran R.M...
Abstract
This chapter addresses the question of how to deal with multiaxial stresses and strains when using the strain-range partitioning method to analyze the effects of creep fatigue. It is divided into three sections: a general discussion on the rationale used in formulating rules for treating multiaxiality, a concise listing of the rules, and an example problem in which axial creep-fatigue data is used to predict the torsional creep-fatigue life of type 304 and 316 stainless steel. The chapter also includes a brief introduction in which the authors outline the challenges presented by multiaxial loading and set practical limits on the problem they intend to treat.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200083
EISBN: 978-1-62708-354-6
... decreases as the temperature increases, although strain aging in mild steels leads to a peak in fatigue strength above room temperature. At sufficiently high temperature, on the order of 0.4 of the melting point, creep-fatigue interactions must be considered. Sample Problem As an example of a high...
Abstract
This chapter provides an overview of factors that must be considered in the design of structural components for satisfactory service performance in terms of mechanical behavior of steel castings. The chapter discusses designing against yielding, excessive deflection, and creep and stress rupture. The chapter describes the three main approaches to evaluating and designing structures relative to fatigue resistance: the S-N curve approach for high cycle fatigue, the strain range approach for low cycle fatigue, and the fracture mechanics approach. Two approaches to design against brittle fracture are described, the ductile to brittle transition concept and the fracture mechanics approach. The chapter also discusses several types of corrosion behavior and emphasizes the need to interact with corrosion specialists in the design process. It illustrates the unique advantages that designers may gain by designing components as castings to achieve low stress concentrations economically.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060385
EISBN: 978-1-62708-261-7
... not as serious (or as sudden) as fracture, because wear is usually anticipated. Failures can also be induced by service temperatures. Examples include creep deformation and rupture at elevated temperature, or the brittle fracture of body-centered cubic (bcc) metals at low temperatures. Cyclic stress (fatigue...
Abstract
Durability is a generic term used to describe the performance of a material or a component made from that material in a given application. In order to be durable, a material must resist failure by wear, corrosion, fracture, fatigue, deformation, and exposure to a range of service temperatures. This chapter covers several types of component and material failure associated with wear, temperature effects, and crack growth. It examines temperature-induced, brittle, ductile, and fatigue failures as well as failures due to abrasive, erosive, adhesive, and fretting wear and cavitation fatigue. It also discusses preventative measures.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490415
EISBN: 978-1-62708-340-9
..., Apr 1986 , Weiss V. and Bakker W.T. , Ed., Electric Power Research Institute , Palo Alto, CA 11. Martens H.J. , Rosslet A. , and Walser B. , Creep-Fatigue Interaction for Two Nickel-base Alloys and a Martensite Heat Resistant Steel , in High Temperature Alloys...
Abstract
Combustion turbines consist of a compressor, a combustor, and a turbine. As commonly configured, the compressor and turbine mount on a single shaft that connects directly to a generator. This chapter reviews the materials of construction, damage mechanisms, and life-assessment techniques for nozzles and buckets. It also presents key information from a detailed review of the literature and the results of a survey on combustion-turbine material problems.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490265
EISBN: 978-1-62708-340-9
... Fatigue Using a Frequency Modified Damage Function , ASME-MPC Symposium on Creep-Fatigue Interaction , MPC-3, Metal Properties Council , New York , 1976 , p 179 - 202 40. Thomas G. and Dawson R.A.T. , The Effect of Dwell Period and Cycle Type on High Strain Fatigue Properties...
Abstract
This chapter covers the failure modes and mechanisms of concern in steam turbines and the methods used to assess remaining component life. It provides a detailed overview of the design considerations, material requirements, damage mechanisms, and remaining-life-assessment methods for the most-failure prone components beginning with rotors and continuing on to casings, blades, nozzles, and high-temperature bolts. The chapter makes extensive use of images, diagrams, data plots, and tables and includes step-by-step instructions where relevant.
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