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creep fracture

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Published: 15 May 2022
Fig. 4 Brittle creep fracture surfaces in HDPE pipe; (a) continuous and (b) step-wise crack growth. Courtesy of Society of Plastics Engineers (SPE). Source: Ref 2 More
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Published: 01 June 2019
Fig. 3 Intergranular creep cracking at the fracture surface of the stub. Nital 1% etch. More
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Published: 01 December 1992
Fig. 3 Fracture morphology of creep crack growth composite specimen (fusion line). More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0091028
EISBN: 978-1-62708-229-7
.... Electric power generation Overheating Superheater tubes ASTM A213 grade T22 UNS K21590 Creep fracture/stress rupture Failure occurred in a steel superheater tube in a power plant. The tube was specified as ASTM A 213 grade T 22, and the reported operating conditions were 13 MPa (1900 psi) at 482...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001011
EISBN: 978-1-62708-229-7
... transfer zone of the coil. It showed that many damage mechanisms may combine in the transition from fracture initiation to final failure. The presence of grain boundary sliding as an indication of creep damage was useful in the characterization of the stress level as high and showed that the process...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001726
EISBN: 978-1-62708-234-1
... Oxidation Swelling Tubes Carbon steel Creep fracture/stress rupture A carbon steel furnace tube which should have given good service for ten years ruptured after one year. Analysis The tube shows obvious swelling at the point of rupture (see Fig. 1 ), and the bulged surface of the tube has...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001000
EISBN: 978-1-62708-229-7
... not be detected. Superheaters Tube bends 1Cr-0.5Mo Creep fracture/stress rupture Rupture occurred at a bend in a superheated steam transfer line between a header and a desuperheater of a boiler producing 230 t/h of steam at 540┬░C and 118 kPa. The boiler had operated for 77,000 h. The geometry...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001737
EISBN: 978-1-62708-229-7
... successfully, it was suggested that the remaining useful life was effectively exhausted and that it should be replaced. Thermal stresses produced during operation would rapidly result in additional cracks. Casings Gas turbines Thermal stresses 321 UNS S32100 Creep fracture/stress rupture Thermal...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001688
EISBN: 978-1-62708-234-1
... case. Decarburization Superheaters Tube components ASTM A209 Creep fracture/stress rupture Intergranular corrosion High-temperature corrosion and oxidation The authors have been involved in the examination of many failed superheater components and the two examples given here...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0090454
EISBN: 978-1-62708-220-4
... resistance of the material and accelerated the failure. Chemical analysis Creep resistance Molding resins Residual stresses Shrinkage Solvents Storage vessels High-density polyethylene Creep fracture/stress rupture Brittle fracture A chemical storage vessel failed while in service...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001475
EISBN: 978-1-62708-234-1
... initiated in the region of the tube where the dark fracture surface and columnar grain structure were evident. These features indicated the presence of a defective zone or progressive cracking which had occurred during service. Microscopic examination of sections through the zone revealed extensive creep...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001736
EISBN: 978-1-62708-220-4
... mechanism, namely grain boundary sliding, relating to the periodic nature of the loading, with high residual stresses being present. Grain boundary sliding Petrochemical equipment Transfer piping Welded joints 316 UNS S31600 Creep fracture/stress rupture Leakage was detected at the welds...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001711
EISBN: 978-1-62708-229-7
..., as a function of oxidation thickness, temperature and time, confirming the creep failure diagnostic. Boiler pipes Electric power generation Steam 10CrMo9-10 X20MoV12-1 Creep fracture/stress rupture Introduction Carbon steels are not adequate for boiler pipes, which must work for long times...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001128
EISBN: 978-1-62708-214-3
... Abstract Creep crack growth and fracture toughness tests were performed using test material machined from a seam welded ASTM A-155-66 class 1 (2.25Cr-1Mo) steel steam pipe that had been in service for 15 years. The fracture morphology was examined using SEM fractography. Dimpled fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001735
EISBN: 978-1-62708-220-4
... showed the welds to be inadequate, and to have a strength and creep resistance below those of the base metal. Reformer furnaces Tubine Welded joints HK-40 UNS J94224 Creep fracture/stress rupture A sample tube was removed from a reformer furnace for life assessment after 69,000 h...
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
... sampling method, represents an attractive approach to the toughness assessment of critical power plant components. Grain boundaries Phosphorus Segregation Stream turbines Studs Temper embrittlement 1CrMoV Creep fracture/stress rupture Introduction During a routine maintenance overhaul...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048299
EISBN: 978-1-62708-229-7
... to find the circuits with the greatest accumulation of debris and replacing them as necessary was recommended on an annual basis. Exfoliation Scale (corrosion) 1.25Cr-0.5Mo ASME SA213-T11 High-temperature corrosion and oxidation Creep fracture/stress rupture This particular pendant-style...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0048846
EISBN: 978-1-62708-234-1
... Electric power generation Steam lines Welded joints ASME SA335-P22 Intergranular fracture Creep fracture/stress rupture A main steam pipe was found to be leaking during a start-up after a 1-day shutdown. The leak was a large circumferential crack in a pipe-to-fitting weld in one of two steam...
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 Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047720
EISBN: 978-1-62708-217-4
...-related failures Creep fracture/stress rupture Airfoil-shape impingement cooling tubes were fabricated of 0.25-mm (0.010-in.) thick Hastelloy X sheet stock, then pulsed laser beam butt welded to cast Hastelloy X base plugs. Each weldment was then inserted through the base of a hollow cast turbine...