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strain-range partitioning

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060069
EISBN: 978-1-62708-343-0
...Abstract Abstract This chapter demonstrates the versatility of the strain-range partitioning method and its application to creep-fatigue problems involving complex loading histories. It begins with a derivation showing that it is possible to assess the damage of hysteresis loops combining two...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060111
EISBN: 978-1-62708-343-0
... 871 1600 0.2 0.87 0.21 1.08 1234 179 214 871 1600 0.2 0.43 0.01 0.44 616 89 17,731 Flow and failure constants for total strain version of strain-range partitioning characterization of nickel-base superalloy B-1900+Hf out-of-phase bithermal results 483 ⇔ 871 °C (900 ⇔ 1600 °F...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060043
EISBN: 978-1-62708-343-0
...Abstract 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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060155
EISBN: 978-1-62708-343-0
... Fig. 7.9 Applicability of strain-range partitioning multiaxiality rules to prediction of Zamrik’s ( Ref 7.9 ) torsional creep-fatigue lives for AISI type 304 stainless steel at 650 °C (1200 °F). (a) Life relationships based on axial creep-fatigue data for AISI type 316 stainless steel at 705 °C...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060173
EISBN: 978-1-62708-343-0
...</xref> with predictions by various methods Table 8.3 Comparison of experimental cyclic lives for tests in Fig. 8.20 with predictions by various methods 1 2 3 4 5 6 7 8 9 Test actual Strain-range partitioning Frequency separation Hysteresis energy Time- and Cycle-Fraction Rule Damage...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060083
EISBN: 978-1-62708-343-0
...-fatigue life prediction hysteresis loops strain-range partitioning components THIS CHAPTER describes analytical and experimental techniques for partitioning any arbitrary cycle into its basic strain-range partitioning (SRP) components. The test cycles normally used to establish the four SRP life...
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
.... 4.30. Illustration of partitioning of the strain range into component strains. (a) Idealized hysteresis loops for the four basic types of inelastic strain range. (b) Hysteresis loop containing Δ∊ pp , Δ∊ cc , and Δ∊ cp . Fig. 4.31. Combined strain-range-partitioning relationships...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060231
EISBN: 978-1-62708-343-0
... Fatigue—A Partisan Proposal Based on Strain-Range Partitioning , Fatigue at Elevated Temperatures , STP 520, Carden A.E. McEvily A.J. and Wells C.H. , Ed., American Society for Testing and Materials , 1973 , p 744 – 782 10.1520/STP38885S 10.16 Halford G.R. , Low-Cycle...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060001
EISBN: 978-1-62708-343-0
... in Chapter 6, “Total Strain-Based Strain-Range Partitioning—Isothermal and Thermomechanical Fatigue,” of this book. This subject has also been briefly discussed in Chapter 11, “Avoidance, Control, and Repair of Fatigue Damage,” in the companion volume ( Ref 1.1 ). Special Role of Grain Boundaries...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700263
EISBN: 978-1-62708-279-2
... for microstructure constituents Table 17.2 Strength-ductility relationships for microstructure constituents Constituent Ultimate tensile strength, MPa (ksi) Uniform true strain Ferrite 300 (44) 0.30 Austenite 640 (93) 0.60 Martensite 2000 (290) 0.08 Source: Ref 17.3 Fig...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490415
EISBN: 978-1-62708-340-9
... for Gas Turbines and Other Applications , Betz W. et al , Ed., Riedel Publishing Co. , Dordrecht, Holland , 1986 , p 1527 - 1536 12. Nazmy M.Y. , High Temperature Low Cycle Fatigue of IN 738 and Application of Strain Range Partitioning , Met. Trans. , Vol 14A , Mar 1983 , p...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410233
EISBN: 978-1-62708-265-5
... ferrite by producing recrystallization , a mechanism of microstructural change in which strain-free grains nucleate and grow on heating. Recrystallization is driven by the high strain energy stored in dislocation substructure produced by cold work and is accomplished by short-range iron atom transfer...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490265
EISBN: 978-1-62708-340-9
... or constant tensile or compressive strain formed the basic data. Analyses were carried out using the linear damage-summation method, the frequency-modified strain-range equation, and the strain-range-partitioning method. Leven concluded that all three methods predicted the actual lives within a factor of two...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.9781627082655
EISBN: 978-1-62708-265-5
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000059
EISBN: 978-1-62708-313-3
... content in the 10 to 37 weight percent range because of a reduction in the equilibrium concentration of γ′ in γ and a reduction in coherency strains ( Ref 5 ). This can be discerned from the Ni-Cr-Al phase diagram ( Ref 4 ), which illustrates reduced γ′ fraction with increased chromium content ( Ref 21...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410113
EISBN: 978-1-62708-265-5
... that quasi-polygonal ferrite contains high dislocation densities, dislocation subboundaries, and even M/A constituent ( Ref 7.21 , 7.22 ). The latter features of massive ferrite correlate with low yield-to-ultimate-strength ratios and high strain-hardening rates, features that produce excellent combinations...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220445
EISBN: 978-1-62708-259-4
... these properties. The performance of steel in some cold forming operations is better described by technological properties: in the case of deep drawing operations, for instance, the normal anisotropy ratio (or strain ratio or Lankford value) is the most critical property, whereas in stretch forming operations...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310091
EISBN: 978-1-62708-286-0
... becomes the stronger phase. The two phases are elongated parallel to the major strain axis of working such as from hot or cold rolling. As working increases, the microstructure and properties become increasingly anisotropic, with the austenite taking on a (110) [223] texture and the ferrite (100) [011...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410579
EISBN: 978-1-62708-265-5
... deformation in this temperature range, the strain-induced martensite transformation is delayed to high strains, where the associated strain hardening is useful in delaying necking and increasing postuniform elongation. Effectively, as soon as necking starts, the additional strain causes that area to locally...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420303
EISBN: 978-1-62708-310-2
... by tempering at 690° C (1275 °F) for (b) 1.5 × 10 3 s, (c) 1.03 × 10 4 s, and (d) 6.05 × 10 5 s. Source: Ref 15.11 as published in Ref 15.9 Fig. 15.20 True-stress/true-strain curves for Fe-0.2C as-quenched and quenched-and-tempered lath martensite with packet size of 8.2 μm. Source: Ref 15.8...