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stress-rupture testing

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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
.... These bands were found contain small cracks and microvoids. A mechanism of intergranular creep rupture at elevated temperature was identified as a result of a series of stress-rupture and tensile tests. It was revealed by the crack shape that cracking initiated on the pipe exterior, then propagated inward...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001826
EISBN: 978-1-62708-241-9
... to prolonged caustic attack that led to ruptures in areas of high stress. The escaping steam eroded the outer surface of the tube causing heavy loss of metal around the rupture points. boiler tubes stress rupture caustic corrosion carbon steel oxide scale deposits punch marks inductively coupled...
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
.... The weldments were finally secured to the bases of the turbine blades by a brazing operation. One of the laser beam attachment welds broke after a 28-h engine test run. Exposure of the fracture surface for study under the electron microscope revealed the joint had broken in stress rupture. Failure was caused...
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
... on tempering of normalized 2 1 4 Cr-1Mo steel. Source: Ref 12 Fig. 15 Effect of elevated-temperature exposure on stress-rupture behavior of (a) normalized and tempered 2Cr-1Mo steel and (b) annealed 9Cr-1Mo steel. Exposure prior to stress-rupture testing was at the indicated test...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001477
EISBN: 978-1-62708-229-7
... place. Prior to the test, cracking was present already, extending up to 90% of the wall thickness. Analyses of brownish deposit material did not reveal the presence of any substances likely to cause stress-corrosion cracking of a Ni-Cu-Mo low-alloy steel. Boilers Pressurizing Fe-0.16C-1.11Ni...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0046155
EISBN: 978-1-62708-233-4
... was the primary cause of failure. Rubbing of the faying surfaces worked the interference area on the post until small tears developed. These small tears became stress-concentration points that nucleated fatigue cracks. Recommendations included rounding the edge of the box in the area of contact with the post...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001696
EISBN: 978-1-62708-234-1
.... Hydrostatic testing indicated a burst strength of 13,500 psi for the intact sections of tubing. Scanning electron microscopy and metallographic examination revealed that the tubing failed due to corrosion pitting exacerbated by stress-corrosion cracking (SCC). The pitting originated on the outer surface...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001738
EISBN: 978-1-62708-220-4
..., the oxidation-cracks stopped. To determine the residual creep life of the sound (non-cracked) bottom manifold material, iso-stress creep tests were performed. It was found that tertiary creep started at 7% strain. The time-to-rupture was greater than 100,000 h. It was concluded that the bottom manifold...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0048634
EISBN: 978-1-62708-225-9
... Cadmium-plated AISI 8740 alloy steel fasteners that failed by hydrogen embrittlement. See also Fig. 2 . Fig. 2 Scanning electron micrograph of fracture surface of fasteners shown in Fig. 1 . 880× Mechanical Testing Stress-Rupture Tests Metallurgical Examination Condition...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001758
EISBN: 978-1-62708-241-9
... at carbides and other microconstituents, especially in single crystal castings that do not possess grain boundaries. gas turbine engine components creep deformation overheating nickel-base superalloy interdendritic stress-rupture fracture stress-rupture testing stress-rupture life Cast nickel...
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
...-temperature exposure on stress-rupture behavior of (a) normalized and tempered 2Cr-1Mo steel and (b) annealed 9Cr-1Mo steel. Exposure prior to stress-rupture testing was at the indicated test temperatures (without stress) and was 10,000 h long for the 2Cr-1Mo steel and 100,000 h long for the 9Cr-1Mo steel...
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
... in either stress or temperature can reduce the time to rupture, attention must be given to both factors during investigation of a failure by a stress-rupture mechanism. Stress-rupture testing, which determines the time of failure at a specific stress and temperature, is often used to understand stress...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003512
EISBN: 978-1-62708-180-1
... fitting. (b) and (c) Crack origin location. (d) Two distinct fatigue-striation patterns that were correlated to the load profile shown in (e) Fig. 14 Replication and microstructural evaluation combined with stress-rupture testing as performed on turbine blades and heater tubes to estimate...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006802
EISBN: 978-1-62708-329-4
... temperature produces a condition of continuous strain called creep. By definition, creep is deformation as a function of time at constant load or stress. Creep, after a period of time, may terminate in stress-rupture fracture, also known as creep rupture. Most brittle fractures of steels occur because...
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 failure mode could be made to shift from silver/silver ductile rupture to uranium/silver separation by exposure to an environment of air saturated with water. From the data gathered in the tests, it was concluded that the uranium/silver solid-state bonded interface was susceptible to stress-corrosion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001669
EISBN: 978-1-62708-229-7
..., to a stress-rupture failure mode. Fig. 1 Cracking in the superheater outlet header associated with the longitudinal weld seam. Fig. 2 Schematic diagram of Shawville 3 SH outlet header, with boat sample locations indicated. Various nondestructive tests were undertaken to assess...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006822
EISBN: 978-1-62708-329-4
.... , How to Prevent Transit Fatigue to Tubular Goods , Oil Gas J. , 1998 55. “ Strength Test Requirements for Steel Pipeline to Operate at a Hoop Stress of 30 Percent or More of SMYS ,” Title 49 CFR 192.505, Federal Code of Regulations , implemented Aug 19 , 1970 56. Kiefner J...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001821
EISBN: 978-1-62708-241-9
... steel, with composition similar to A202B ( Fig. 12 ). Adjusting this relationship for the strain rates used in normal tensile testing resulted in a plot of elevated-temperature tensile strength versus temperature ( Fig. 13 , top curve). Anderson and Norris also investigated the short-time stress-rupture...
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 Engineering Materials , McGraw-Hill , 1959 36. Hurst R.C. and Rantala J.H. , Influence of Multiaxial Stresses on Creep and Creep Rupture of Tubular Components, Mechanical Testing and Evaluation , Vol 8 , ASM Handbook , ASM International , 2000 , p 405 – 411 10.31399/asm.hb.v08...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1
.... The article explains the failure of pressure vessels with emphasis on stress-corrosion cracking, hydrogen embrittlement, brittle and ductile fractures, creep and stress rupture, and fatigue with examples. brittle fracture composite creep rupture ductile fracture fabrication failure analysis...