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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001404
EISBN: 978-1-62708-220-4
... of the external surface had taken place in the form of confluent pitting over a band adjacent to the fillet weld which attached the pan to the blocking ring. Numerous cracks were present in this corroded zone. Microscopical examination of several specimens cut from the sample revealed that the internal cracks...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001498
EISBN: 978-1-62708-218-1
...Abstract Abstract One end of an axle shaft containing the integral spur pinion was submitted for examination, along with the report of a tooth pitting failure. The spur pinion, integral to the axle shaft, operated in a medium-size, off-highway truck at an open-pit mine, for “a relatively short...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001440
EISBN: 978-1-62708-235-8
...Abstract Abstract A portable propane container with a name-plate soldered onto it exploded in service. When the vessel was inspected afterwards, it was found to have developed a crack in the top end plate. A portion of the end plate cut out to include the midlength and one termination...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0089429
EISBN: 978-1-62708-223-5
...; and the cutting edge of the flutes was excessively hard. In his opinion, this high hardness made the edge brittle, so that the edge would chip during drilling. The chips caused the drill to bind and then shatter in a brittle manner because of excessive carbide segregation. Plaintiff alleged defective design...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001308
EISBN: 978-1-62708-215-0
.... A section of the flange containing one through-flange crack was examined using various methods. Results indicated that the cracks had initiated from intergranular quench cracks caused by the use of water as the quenching medium. Brittle propagation of the cracks was promoted by high residual stresses acting...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001444
EISBN: 978-1-62708-231-0
... evidence of age-hardening having developed during the previous service to which the rail had been subjected. Flame-cutting of high and medium carbon steels is always liable to result in the formation of martensitic zones flanking the cut, especially in massive sections, unless the material is pre...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003560
EISBN: 978-1-62708-180-1
...  Velocity Low Low Variable High  Impingement angle Low Low Medium-low Variable Environmental Generally dry Generally as slurry, variable pH Variable Generally as slurry, variable pH Principle mechanisms Plowing, cutting Cutting, some fragmentation and corrosion Cutting, some...
Book Chapter

Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006790
EISBN: 978-1-62708-295-2
... of grooves that do not involve direct material removal. The displaced material forms ridges adjacent to grooves, which may be removed by subsequent passage of abrasive particles. Cutting occurs when material is separated from the surface in the form of primary debris, or microchips, with little...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001436
EISBN: 978-1-62708-235-8
... a microstructure typical of a medium-carbon steel (carbon approximately 0.4%) in the normalized condition, a material not weldable by ordinary methods. It was concluded that the post-welding crack arose primarily from the thermal contraction which developed in the weld metal on cooling. It is probable...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001270
EISBN: 978-1-62708-215-0
...Abstract Abstract An investigation was conducted to determine the factors responsible for the occasional formation of cracks on the parting lines of medium plain carbon and low-alloy medium-carbon steel forgings. The cracks were present on as-forged parts and grew during heat treatment...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
... containing soft ceramic shot filler. (Note the round particles in the epoxy at the top.) The specimen is annealed H13 hot work die steel, and it was etched with picral. Fig. 16 Light micrograph showing cutting damage (arrows at left) and a burr at the corner of a specimen of commercial-purity...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001811
EISBN: 978-1-62708-180-1
..., careful visual inspection should always precede any technique requiring destruction or cutting of a failed part. A frequent error in investigating a failure is to interpret it automatically on the basis of the most commonly known causes indicated from past experience. Although this cannot be avoided...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001378
EISBN: 978-1-62708-215-0
... avoid contact with the clevis. A centrally located eyebolt might also be considered. Rolled threads would be preferred to the existing machine-cut threads. An increased lateral load could be produced when a wide stud bolt spacing is used with short slings. Most Probable Cause Remedial Action...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001163
EISBN: 978-1-62708-234-1
... simultaneously: A material with a susceptibility of stress corrosion cracking Internal or external tensile stresses A corrosive medium for the particular material The cracks that are initially very fine run either through the grains (transcrystalline) or follow the grain boundaries...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... specimens. Indeed, the initial sectioning operation may be quite a challenge. Bulk samples for subsequent laboratory sectioning may be removed from larger pieces using methods such as core drilling, band- or hacksawing, flame cutting, or similar methods. Flame or torch cutting may be the only recourse...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001428
EISBN: 978-1-62708-224-2
... of the other one, a complete eyebolt was submitted for assessment. Microscopic examination indicated a medium carbon-manganese steel had been used for the lower screwed portion of the eyebolt. Failure may have been due to brittle fracture or to fatigue, both of which could have been initiated at cracks...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0048607
EISBN: 978-1-62708-225-9
... installations were examined. It was found that fracture of the bolts was by intergranular stress corrosion. A metallic copper-containing antiseizure compound on the bolts in a corrosive medium set up an electro-chemical cell that produced trenchlike fissures or pits for fracture initiation. Because the bolts...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0091703
EISBN: 978-1-62708-229-7
...Abstract Abstract An arsenical admiralty brass (UNS C44300) finned tube in a generator air cooler unit at a hydroelectric power station failed. The unit had been in operation for approximately 49,000 h. The cooling medium for the tubes was water from a river. Air flowed over the finned exterior...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001459
EISBN: 978-1-62708-234-1
... materials, more especially cast-iron and some of the cast aluminium-base alloys, it is, unfortunately, generally very difficult to determine whether a fracture has been preceded by a slowly developing crack unless there has been some mutual abrasion of the crack surfaces or the ingress of some fluid medium...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001022
EISBN: 978-1-62708-214-3
... undercarriage leg, showing general location of cracks and the material represented by parts 1, 3, 4, and 5. The major cracks in parts 1, 4, and 5 were opened by appropriate saw cuts and impact blows. The opened fractures are shown in Fig. 2 (part 4), and Fig. 3 (part 1), which represent one...