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rupture ductility

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Published: 01 January 2002
Fig. 8 Schematic creep curves for alloys having low and high stress-rupture ductility, showing the increased safety margin provided by the alloy with high stress-rupture ductility. Source: Ref 10 More
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Published: 15 January 2021
Fig. 9 Schematic creep curves for alloys having low and high stress-rupture ductility, showing the increased safety margin provided by the alloy with high stress-rupture ductility. Source: Ref 18 More
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
...) failures are recognized by local ductility and multiplicity of intergranular cracks ( Fig. 4 ). However, creep deformation of engineering significance can also occur before intergranular fracture initiates. Stress-rupture data (log stress versus log time to failure) typically show an inflection when...
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
... for interpreting and understanding creep behavior. Generally, creep (distortion) failures are recognized by local ductility and multiplicity of intergranular cracks ( Fig. 5 ). However, creep deformation of engineering significance can also occur before intergranular fracture initiates. Stress-rupture data...
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Published: 01 June 2019
Fig. 9 Fatigue fracture followed by ductile rupture of a single broken filament from a steel drive cable. Magnification 360 times. More
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Published: 01 January 2002
Fig. 2 Typical creep and creep rupture behavior of ductile polymers More
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Published: 15 May 2022
Fig. 2 Typical creep and creep rupture behavior of ductile polymers More
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Published: 15 May 2022
Fig. 8 Typical creep and creep-rupture curves for polymers. (a) Ductile polymers. (b) Brittle polymers More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001065
EISBN: 978-1-62708-214-3
... and Results Surface Examination Scanning Electron Microscopy/Fractography Various areas around the fast-fracture edges of the specimens were examined by SEM. All of the fractures exhibited a dimpled rupture (ductile) appearance, with characteristics typical of fast ductile fracture. The examination...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0090932
EISBN: 978-1-62708-235-8
... to ductile overload. The forming stresses were sufficient to initiate surface ruptures, suggestive of having exceeded the forming limit. Recommendations included examining the forming process, including lubrication and workpiece fixturing. Cold drawing Cracks Wire 303 UNS S30300 Ductile fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001247
EISBN: 978-1-62708-228-0
... with nickel to a lesser extent. Local thinning, cavitation, and ductile deformation markings associated with the unmatched sample taken from the center of the fire showed the tube ruptured as a result of overheating. Overheating while the temperature recorder was off the chart caused severe loss of tube...
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
.... It illustrates how surface degradation of a plain strain tension specimen alters the ductile brittle transition in polyethylene creep rupture. The article concludes with information on the effects of temperature on polymer performance. creep rupture ductile brittle transition environmental stress...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001479
EISBN: 978-1-62708-229-7
... Abstract Several ruptures took place in the front wall tubes of a water tube boiler. Some rupture samples showed ductile failure while others showed brittle failure. Specimens taken from the rupture where a thick edge had been produced, i.e., with little evidence of prior plastic deformation...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
... 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) • Load exceeded the dynamic strength of the part • Check for proper alloy and processing as well as proper...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
... 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 size• Loading direction may show failure was secondary or impact induced• Low...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001318
EISBN: 978-1-62708-215-0
... Abstract Failure of three C22000 commercial bronze rupture discs was caused by mercury embrittlement. The discs were part of flammable gas cylinder safety devices designed to fail in a ductile mode when cylinders experience higher than design pressures. The subject discs failed prematurely...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001054
EISBN: 978-1-62708-214-3
... that the specimens tested in dry laboratory air failed predominantly by ductile rupture in the silver. These specimens included those that ruptured immediately in the torque-to-failure test and in the time-to-rupture test. The fractures usually propagated along the silver/silver interface. Figure 3...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001004
EISBN: 978-1-62708-229-7
..., and marginally increased the rupture ductility. This increase in rupture ductility was thought to be due to the reduction of phosphorus at grain boundaries. Experimental Techniques The studs were manufactured to the French specification 28CDV5-08 and this together with the bulk chemical composition of two...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048309
EISBN: 978-1-62708-229-7
... Abstract A 75 mm OD x 7.4 mm wall thickness carbon steel boiler tube ruptured. A substantial degree of corrosion on the water-side surface leaving a rough area in the immediate vicinity of the rupture was revealed by visual examination. Decarburization and extensive discontinuous intergranular...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048801
EISBN: 978-1-62708-229-7
... Abstract A 75 cm OD x 33 mm thick pipe in a horizontal section of a hot steam reheat line ruptured after 15 years in service. The failed section was manufactured from rolled plate of material specification SA387, grade C. The longitudinal seam weld was a double butt-weld that was V-welded from...