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creep fracture

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Published: 01 January 1997
Fig. 32 (a) Stress-creep fracture times for an iron-base alloy at different temperatures. Source: Ref 11 . (b) Larson-Miller master plot of the same data. This diagram permits fracture times to be estimated at stress-temperature combinations other than those illustrated in (a). Source: Ref More
Image
Published: 01 January 1987
Fig. 866 Creep fracture of Udimet 720 tested in a salt environment at 705 °C (1300 °F). Sample heat treatment and salt composition same as in Fig. 861 . Test stress: 896 MPa (130 ksi). Fractograph shows salt-coated sample surface and intergranular stress-rupture surface. Note salt corrosion More
Image
Published: 01 January 1987
Fig. 35 Examples of intergranular creep fractures. (a) Wedge cracking in Inconel 625. (b) Wedge cracking in Incolay 800. (c) Intergranular creep fracture resulting from grain-boundary cavitation in PE-16. Source: Ref 59 More
Image
Published: 01 December 1998
Fig. 46 Fracture-mechanism maps for (a) 2 1 4 Cr-1Mo steel and (b) type 316 stainless steel show the conditions of stress and elevated temperature under which ductile fracture, transgranular creep fracture, intergranular creep fracture, and rupture occur. More
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000616
EISBN: 978-1-62708-181-8
...; fatigue and creep fractures; simultaneous metallographic-fractographic evaluation; and effect of thermal cycling on fatigue fracture. creep fracture fatigue fracture gas-turbine wheel hydrogen-embrittlement fracture nickel-base superalloys Fig. 828, 829, 830, 831 Hydrogen-embrittlement...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000610
EISBN: 978-1-62708-181-8
... candy fracture, cleavage fracture, brittle fracture, high-cycle fatigue fracture, fatigue striations, hydrogen-embrittlement failure, creep crack propagation, fatigue crack nucleation, intergranular creep fracture, torsional overload fracture, stress-corrosion cracking, and grain-boundary damage...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
... is provided in Table 1 . Fracture mode identification chart Table 1 Fracture mode identification chart Method Instantaneous failure mode (a) Progressive failure mode (b) Ductile overload Brittle overload Fatigue Corrosion Wear Creep Visual, 1 to 50× (fracture surface) Necking...
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
... deformation, including stress-rupture fractures. It also describes metallurgical instabilities, such as aging and carbide reactions, and evaluates the complex effects of creep-fatigue interaction. The article concludes with a discussion on thermal fatigue and creep fatigue failures. aging carbide...
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
... are also discussed. The article describes the fracture characteristics of stress rupture. Information on various metallurgical instabilities is also provided. The article presents a description of thermal-fatigue cracks, as distinguished from creep-rupture cracks. creep-rupture cracks creep...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002390
EISBN: 978-1-62708-193-1
... rate behavior and those essential elements in making spectrum crack growth life prediction. It provides information on life assessment for bulk creep damage. crack growth rate creep damage high temperature life assessment spectrum life prediction CURRENT FRACTURE MECHANICS theory treats...
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
... and strain components associated with creep processes; stress and temperature dependence; fracture at elevated temperatures; and environmental effects. The article describes the basic presentation and analysis methods for creep rupture. It provides information on the application of these methods to materials...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002460
EISBN: 978-1-62708-194-8
...-temperature fracture, high-temperature fracture, and fatigue failure are also discussed. atomic coordination ceramics crystal structure crystalline defects fatigue failure high-temperature fracture low-temperature fracture low-temperature strength mechanical properties metals microstructure...
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
... fracture, plastic collapse, fatigue, creep, corrosion, and buckling. This article focuses on the broad categories of these failure modes: fracture, fatigue, environmental cracking, and high-temperature creep. It also discusses the benefits of a fitness-for-service approach. brittle fracture buckling...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002389
EISBN: 978-1-62708-193-1
... turbine sections because the local thermal stresses are higher. The primary cause of crack initiation and propagation in turbine casings is fatigue and creep-fatigue and occasionally brittle fracture due to high transient thermal stresses ( Ref 4 ). Thermal stresses are responsible for fatigue and creep...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003307
EISBN: 978-1-62708-176-4
... effect, and, therefore, no time-dependent fracture-mechanics parameter has been defined for such instances. However, in the case of slow loading, creep deformation can dominate the elastic and plastic deformation. In this instance, Ohtani et al. ( Ref 34 ) and other researchers ( Ref 35 , 36 , and 37...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003287
EISBN: 978-1-62708-176-4
... Theoretical and Practical Approach to Creep and Creep Fracture , Proc. Seventh International Conf. Strength of Metals and Alloys , McQueen H.J. , Bailon J.-P. , Dickson J.I. , Jonas J.J. , and Akben M.G. , Ed., Pergamon Press , Oxford , 1986 , p 1807 – 1830 6. Blum W...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005411
EISBN: 978-1-62708-196-2
... and demand precise environmental-control capability and extremely high resolution in the measurement of displacements in cracked bodies associated with creep strains and in the measurement of crack increments at high temperatures. Such experimental capabilities and the concepts of nonlinear fracture...
Image
Published: 01 December 2004
of the structure at the interior. Traces of fine carbide precipitation are evident at slip regions in the austenite matrix. (c) Interior of creep-test specimen fractured after 13,690 h at 650 °C (1200 °F) and 110 MPa (16 ksi). Cored structure is more fully developed; eutectic carbide is unchanged. (d) Interior More
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006824
EISBN: 978-1-62708-329-4
... materials occur intergranularly, not all cases will also involve creep voiding. In the failure cases where creep voids are present, their identification can be a clear differentiator from other noncreep intergranular fracture mechanisms. Creep failures in gas turbines are most common to rotating...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002410
EISBN: 978-1-62708-193-1
... Abstract This article discusses fracture, fatigue, and creep of nickel-base superalloys with additional emphasis on directionally solidified and single-crystal applications. It analyzes the physical metallurgy of these alloys. The effects of grain boundary and grain size on failure...