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isothermal fatigue

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060111
EISBN: 978-1-62708-343-0
... 982 1800 126 322 478 0.0038 7.0 Isothermal fatigue results for B-1900+Hf Table 6.4 Isothermal fatigue results for B-1900+Hf Temperature Frequency, Hz Δε el , % Δε in , % Δε T , % Δσ N f , cycles °C °F MPa ksi 483 900 0.2 1.10 0.48 1.58 2085 302 33...
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Published: 01 July 2009
Fig. 8.16 Comparison of isothermal fatigue (IF) life prediction with limited experimental results for isothermal testing of Alpak-S1-coated Mar-M 247 at 871 °C (1600 °F). Source: Ref 8.70 More
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Published: 01 November 2012
Fig. 39 Isothermal (IF) and thermomechanical fatigue (TMF) data of 1010 carbon steel. Note: (6) indicates a 6 min hold time at maximum temperature. Source: Ref 20 More
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Published: 01 August 2005
Fig. 3.42 Schematic hysteresis loops encountered in isothermal creep-fatigue testing. (a) Pure fatigue, no creep. (b) Tensile stress hold, strain limited. (c) Tensile strain hold, stress relaxation. (d) Slow tensile straining rate. (e) Compressive stress hold, strain limited. (f) Compressive More
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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 More
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Published: 01 December 1989
Fig. 4.39. Schematic diagrams showing waveforms of temperature, strain, and stress in thermal and isothermal fatigue tests. More
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Published: 01 November 2012
Fig. 36 (a) Mechanical strain/temperature variation in out-of-phase thermomechanical (TMF OP), in-phase thermomechanical (TMF IP), and isothermal fatigue (IF). (b) Out-of-phase thermomechanical stress-strain response. (c) In-phase thermomechanical stress-strain response. Source: Ref 19 More
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...
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Published: 01 July 2009
Fig. 6.39 Comparison of isothermal 1150 °C (2100 °F) and bithermal 1150 ⇔ 205 °C (2100 ⇔ 400 °F) fatigue behavior of the tantalum alloy ASTAR 811C in ultrahigh vacuum. Source: Ref 6.25 More
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Published: 01 December 1989
Fig. 4.22. Morphologies of fractures (at left) and spikes (at right) in low-cycle fatigue specimens of Udimet 710 tested isothermally with 5-h hold times at a strain range of 2% ( Ref 63 ). Top pair: 730 °C (1350 °F); T,T morphology. Middle pair: 790 °C (1450 °F); I,M morphology. Bottom pair More
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
... of fractures (at left) and spikes (at right) in low-cycle fatigue specimens of Udimet 710 tested isothermally with 5-h hold times at a strain range of 2% ( Ref 63 ). Top pair: 730 °C (1350 °F); T,T morphology. Middle pair: 790 °C (1450 °F); I,M morphology. Bottom pair: 900 °C (1650 °F); I,I morphology...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040257
EISBN: 978-1-62708-300-3
... Abstract This chapter discusses the processes of isothermal and hot-die forging and their use in producing aerospace components. It explains how isothermal forging was developed to provide a near-net shape component geometry and well-controlled microstructures and properties with accurate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060223
EISBN: 978-1-62708-343-0
... fatigue resistance of the matrix material, particularly in the low-cycle regime ( Ref 9.2 , 9.3 ). Results of a simple example calculation are presented in conjunction with data from Ref 9.3 and repeated in Fig. 9.3 . The results are from isothermal, 425 °C (800 °F), completely reversed fatigue tests...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060173
EISBN: 978-1-62708-343-0
...-fatigue-environment 8.130 Source: Ref 8.73 Fig. 8.16 Comparison of isothermal fatigue (IF) life prediction with limited experimental results for isothermal testing of Alpak-S1-coated Mar-M 247 at 871 °C (1600 °F). Source: Ref 8.70 Fig. 8.17 Comparison of thermomechanical...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490415
EISBN: 978-1-62708-340-9
... in Chapter 4 . Only those aspects and problems unique to life prediction of combustion turbine blades are reviewed here. Most life-prediction studies have simply consisted of evaluating the “fit” of different damage rules to isothermal low-cycle-fatigue data developed in the laboratory. Nazmy...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120033
EISBN: 978-1-62708-269-3
... tolerance Better low-cycle fatigue (initiation) properties Acicular Superior creep properties Higher fracture-toughness values Precision Die Forging A titanium die forging alternative procedure involves the use of precision isothermal (sometimes superplastic) forging...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060231
EISBN: 978-1-62708-343-0
... ). Isothermal creep-fatigue tests were used to define the required SRP life relationships for Δε PP and Δε PC , and the structural cyclic stress-strain analysis provided the partitioning of the tensile and compressive plasticity and creep components. Tensile inelastic straining was free of time-dependent creep...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320195
EISBN: 978-1-62708-332-4
... Abstract Unlike conventional quench and temper heat treatment, austempering is an iron and steel heat-treatment process that enhances mechanical properties through the isothermal transformation of austenite with a minimum amount of quenching stresses. This chapter begins with a discussion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550299
EISBN: 978-1-62708-307-2
.... 6.3 . Despite a lack of fracture resistance (low ductility, fracture toughness, and fatigue crack growth rate), the titanium aluminides Ti 3 Al (α-2) and TiAl (γ) have great potential for enhanced performance. Table 6.3 compares properties of these aluminides with those of conventional titanium...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480225
EISBN: 978-1-62708-318-8
... Abstract This chapter discusses the equipment and processes used to convert titanium billet and bar into useful shapes or more refined product forms. These secondary working operations include open-die, closed-die, hot-die and isothermal forging as well as ring rolling and extruding...