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Creep fracture/stress rupture

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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: 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: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003289
EISBN: 978-1-62708-176-4
... reviewed. creep-rupture properties creep-rupture life parametric modelling isostress testing accelerated creep testing USE OF CREEP-RUPTURE PROPERTIES to determine allowable stresses for service parts has evolved with experience, although guidelines for use differ among specifications...
Image
Published: 15 January 2021
Fig. 11 Fracture surfaces of a nickel-base superalloy turbine blade. (a) Secondary electron image of interdendritic stress-rupture fracture at the trailing edge (TE) of single-crystal turbine blade casting showing creep voids on the fracture surface. (b) Scanning electron microscopy More
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
... components and multiaxial testing methods. multiaxial stress creep creep rupture tubular component effective stress effective strain elastic stress distribution steady-state creep stress multiaxial creep ductility multiaxial testing thermal stress DESIGN OF PRESSURIZED COMPONENTS...
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: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003288
EISBN: 978-1-62708-176-4
... the creep behavior of the material as a function of time. This may include creep tests and/or creep-rupture tests. Creep tests measure the amount of creep strain as a function of time, while creep-rupture tests measure the time to fracture for a given temperature and stress levels. Both tests have...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003286
EISBN: 978-1-62708-176-4
... has been achieved by reducing component geometry, leading to greater stresses in high-temperature materials. Naturally, the importance of reliable creep and stress-rupture testing increases with increasing service stress. Introducing new high-temperature materials that have lower densities is another...
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
... are often conducted on time-dependent failure mechanisms. The principal types of elevated-temperature failures are stress rupture, creep, low- or high-cycle fatigue, thermal fatigue, and coating degradation in gas turbines. For high-temperature tubing and piping components, embrittlement phenomena can occur...
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
.... Environmentally assisted cracking includes corrosion, stress-corrosion cracking, hydrogen-induced cracking, and other environmentally assisted failure modes. High-temperature creep includes creep rupture and creep crack growth. This article discusses each of these categories, as well as the benefits of a fitness...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005556
EISBN: 978-1-62708-174-0
... on creep rupture of solid-state-welded silver joints between nonplastically deforming base metals Figure 5 shows scanning electron micrographs of a solid-state-welded silver interlayer joining steel base metals, loaded at the relatively low stress level of 207 MPa (30 ksi) (albeit...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001352
EISBN: 978-1-62708-173-3
... interlayer joining steel base metals, loaded at the relatively low stress level of 207 MPa (30 ksi) (albeit, for a substantial fraction of the expected creep-rupture time). Some of the larger cavities consist of clusters of smaller (<0.5 μm, or 200 μin., in diameter) microvoids. A typical fracture surface...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
... and destructive testing, chemical analysis Loading direction can show failure was secondary Short-term, high-temperature, high-stress rupture has ductile appearance (see creep) Load exceeded the dynamic strength of the part Check for proper alloy and processing, as well as proper toughness, grain...
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
... of 0.01%/1000 h (minimum creep-rate equivalent: 1% in 100,000 h) F avg × 100% of the average stress to cause rupture at the end of 100,000 h. (The factor F avg was introduced in the code to maintain at least a margin of 10 on life at temperatures above 815 °C, or 1500 °F.) 80% of the minimum...
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
... between creep strength (0.01%/1000 h) and ultimate tensile strength of a carbon steel. Creep strength estimates made using isothermal lot constant. Source: Ref 24 Stress Rupture When fracture is a limiting factor, stress-rupture values are used in design. Stress-rupture values of various low...
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
... (7 ksi) for 54 h. Fracture occurred along longitudinal grain boundaries (perpendicular to the applied stress). SEM, 50× (J.K. Tien, T.E. Howson, and J.E. Stulga, Columbia University) Fig. 850 Fig. 851 Fig. 852 “Departure side pinning” during creep of Inconel alloy MA754...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003550
EISBN: 978-1-62708-180-1
... reagents also impact the creep rupture properties of plastics by shortening the time for brittle fracture to occur over that which exists in the absence of the reagent. Sometimes ESC reagents will create brittle fracture at a low stress level in a polymer such as polyethylene that normally fails...
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
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006756
EISBN: 978-1-62708-295-2
... exceeded the strength of the part Possible wrong material (check for proper alloy and processing by hardness check or destructive testing, chemical analysis) Loading direction may show failure was secondary Short-term, high-temperature, high-stress rupture has ductile appearance (see creep...