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creep-rupture life

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Published: 01 June 2016
Fig. 11 Correlation of creep-rupture life with 220 MPa (32 ksi) stress at 980 °C (1800 °F) with volume fraction ( V f ) of fine gamma-prime (γ′) precipitates in alloy MAR-M-200 (columnar grain directionally solidified casting) More
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Published: 31 August 2017
Fig. 5 Effect of molybdenum on creep-rupture life of normalized 4% Si iron at 650 and 816 °C (1200 and 1500 °F). Source: Ref 13 More
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Published: 01 December 1998
Fig. 15 Increase in creep-rupture life with increase in V f of fine γ′, demonstrated in a columnar-grain, directionally solidified nickel-base superalloy, PWA 1422 (variant of MarM-200, with hafnium addition) More
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003289
EISBN: 978-1-62708-176-4
... of required creep-rupture properties based on insufficient data. Methods for evaluation of remaining creep-rupture life, including parametric modeling, isostress testing, accelerated creep testing, evaluation by the Monkman-Grant coordinates, and the Materials Properties Council (MPC) Omega method, are also...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003545
EISBN: 978-1-62708-180-1
... that are vulnerable to bulk creep damage typically are subjected to uniform loading and uniform temperature distribution during service. The life of such a component is related to the creep-rupture properties, and the type of failure is referred to as stress rupture or creep rupture. Stress or creep rupture is apt...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... that are vulnerable to bulk creep damage typically are subjected to uniform loading and uniform temperature distribution during service. The life of such a component is related to the creep-rupture properties, and the type of failure is referred to as stress rupture or creep rupture. Stress or creep rupture is likely...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006807
EISBN: 978-1-62708-329-4
... regime may be considered to have reached its end of life when: Rupture occurs. The deformation becomes excessive. Latent flaws or initiated cracks grow at unacceptable rates by creep or creep/fatigue. Creep Curve Ever since creep was recognized as a concern in the design of high...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003517
EISBN: 978-1-62708-180-1
... evaluations, the creep cavitation damage assessment, the oxide-scale-based life prediction, and high-temperature crack growth methods. coating evaluation creep cavitation damage assessment elevated-temperature failure gas turbine blade hardness testing high-temperature crack growth methods life...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002472
EISBN: 978-1-62708-194-8
.... This relationship is commonly observed in ductile materials and has been used to predict one property from the other. However, the true significance of the correlation is that the rupture life is principally a measure of creep strength rather than fracture resistance. This leads to a number of inconsistencies...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002387
EISBN: 978-1-62708-193-1
... Abstract This article focuses on the subject of proactive or predictive maintenance with particular emphasis on the control and prediction of corrosion damage for life extension and failure prevention. It discusses creep life assessment from the perspective of creep-rupture properties...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0009218
EISBN: 978-1-62708-176-4
...), and temperature ( T ). There are several methods for relating creep strain to time under constant load (or stress) in isothermal uniaxial tests. The time ( t x ) to accumulation of given amounts of creep strain can be analyzed by techniques similar to those commonly used for rupture life data. This method...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003291
EISBN: 978-1-62708-176-4
... have been used in component design codes to calculate the creep life of the material under triaxial state of stress. These concepts are based on the principle that the life of a component with a multiaxial effective stress corresponds to the rupture time at the same uniaxial stress according...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001048
EISBN: 978-1-62708-161-0
... and stress-rupture values (for example, 100,000 h) are often extrapolated from shorter-term tests, which are conducted at high stresses and in which creep is dislocation controlled. Whether these property values are extrapolated or determined directly often has little bearing on the operating life of high...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001477
EISBN: 978-1-62708-173-3
... the deformation and fracture behavior of high-temperature components operating in the creep regime are time dependent, it is normal practice to design high-temperature components using the concept of a design life. The design life is usually based on a specific amount of allowable strain or rupture in 100,000 h...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006266
EISBN: 978-1-62708-169-6
... polycrystalline cast nickel-base superalloys versus temperature Fig. 4 Stress-rupture curves for a 1000 h rupture life of selected nickel-base cast superalloys Fig. 5 Comparison of creep resistance of polycrystalline (PC) and columnar grain directionally solidified (CGDS) castings. (a) Creep...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001035
EISBN: 978-1-62708-161-0
... is at or above 425 °C (800 °F). The result is a weakening of the steel after high-temperature exposure ( Fig. 1 ). Carbon steels are also increasingly affected by creep at temperatures above 370 °C (700 °F). Figure 2 shows the effect of temperature on the stress-to-rupture life of a carbon steel. Fig. 1...
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Published: 01 January 1990
Fig. 49 Effect of test temperatures on strength of 2 1 4 Cr-1Mo steel. Effect of test temperature on tensile strength, yield strength, creep strength (for creep rate of 0.1 μm/m · h), and stress to rupture (for life of 100,000 h) of annealed specimens (dashed lines) and hardened More
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006921
EISBN: 978-1-62708-395-9
... in transparency Creep-rupture from constant load (creep) Odor development Chemical or environmental stress cracking (ESC) Loss of adhesion Loss of mechanical seal (stress-relaxation) Shrinkage/warpage Cracking from cyclic loading (fatigue) Once the type of failure needing to be assessed...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003288
EISBN: 978-1-62708-176-4
... conditions follows the general forms of primary, secondary, and tertiary stages ( Fig. 1 ). However, the period of time spent in primary and secondary creep under constant stress can be much longer than under an identical engineering stress (constant load). Hence, rupture life is longer under constant stress...
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Published: 01 January 1990
Fig. 8 Effects of creep-rupture ductility (a) on hold time effects (b) during low-cycle fatigue testing of a 1Cr-molybdenum-vanadium steel at 500 °C (930 °F). N f0 = fatigue life with zero hold time. Source: Ref 18 More