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fabrication consideration

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Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
... not be representative of the failed hardware. Another consideration for the failure analyst is that the mechanical testing performed for certain fabricated shapes may not be an exact representation of the actual hardware. Fabrication products such as castings, forgings, and additive manufacturing...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2
... Abstract Distortion often is observed in the analysis of other types of failures, and consideration of the distortion can be an important part of the analysis. This article first considers that true distortion occurs when it was unexpected and in which the distortion is associated with a...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006773
EISBN: 978-1-62708-295-2
...-road vehicle needs to carry 20% more cargo; a railroad bridge must span a river; a replacement knee joint or a handheld computer are needed. Inherent in any design are other limitations and considerations, such as cost, ease of fabrication, weight, size, safety, and reliability, all of which factor...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001536
EISBN: 978-1-62708-229-7
... Abstract Argonne National Laboratory has conducted analyses of failed components from nuclear power-generating stations since 1974. The considerations involved in working with and analyzing radioactive components are reviewed here, and the decontamination of these components is discussed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001424
EISBN: 978-1-62708-233-4
.... In the case of a fabricated structure, however, of a form possibly based on that of a casting previously used successfully for the particular purpose, the scantlings are frequently made considerably lighter because the tensile strength of mild steel is superior to that of cast-iron and higher...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001810
EISBN: 978-1-62708-241-9
... been fabricated from spring steel which, according to stress calculations, did not have sufficient torsional strength. Examination of the damaged parts confirmed the finding, revealing that all fractures started at a shoulder radius in an area of high stress concentration. Based on the investigation...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001315
EISBN: 978-1-62708-215-0
... the bellows. The weld failure was attributed to poor quality assurance during fabrication, which resulted in cracklike openings at the fusion zone. The openings extended during tensile loading. Use of proper welding procedures and quality control measures were recommended to prevent future failures...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001319
EISBN: 978-1-62708-215-0
... Abstract Several type 304L stainless steel dished ends used in the fabrication of cylindrical vessels developed extensive cracking during storage. All of the dished ends had been procured from a single manufacturer and belonged to the same batch. When examined visually, several rust marks were...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001046
EISBN: 978-1-62708-214-3
... confirmed the suitability of the nickel-chromium alloys for such an environment. Inconel 625 was selected for fabrication of a new preheater/exchanger. Heat exchangers, materials selection Incinerators, materials selection Internal oxidation Nickel-base alloys, corrosion Solvents, environment 309...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001377
EISBN: 978-1-62708-215-0
... Abstract Sudden and unexplained bearing cap bolt fractures were experienced with reduced-shank design bolts fabricated from 42 CrMo 4 steel, quenched and tempered to a nominal hardness of 38 to 40 HRC. Fractographic analysis provided evidence favoring stress-corrosion cracking as the operating...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001594
EISBN: 978-1-62708-229-7
... CPSES. They are cost effective to install in the field and the fact that they can be assembled quickly is important where minimizing the radiation dose is a consideration in the repair process. Enhanced field fabrication methods can be expected to result in even better reliability. Experiments...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001317
EISBN: 978-1-62708-215-0
... the vessel. Both dished ends were manufactured from the same batch and were supplied by the same manufacturer One of the dished ends had been exposed to sodium at 550 deg C (1020 deg F) for 500 h before failure due to sodium leakage was detected. The other dished end was used to fabricate a second...
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
... influence of microstructures on the failure of a material is discussed and examples of such work are given to illustrate the value of light microscopy. In addition, information on heat-treatment-related failures, fabrication-/machining-related failures, and service failures is provided, with examples...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001111
EISBN: 978-1-62708-214-3
... fabricated from this grade of steel undergo frequent inspection and that stringent test requirements be imposed as a condition of use in non-redundant main load-carrying components. Boxbeams Segregations Weld defects ASTM A517 grade H UNS K11646 Joining-related failures Brittle fracture...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001047
EISBN: 978-1-62708-214-3
..., corrosion Ferralium UNS S39255 E-Brite UNS S44627 Intergranular corrosion Intergranular fracture A tube sheet in a nitric acid condenser was removed from service because of corrosion. The tube sheet was fabricated from 8.25 nun (0.325 in.) thick E-Brite, which was explosively bonded to...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001380
EISBN: 978-1-62708-215-0
... corrosion, where neither factor acting independently or alternately would initiate and propagate a crack until final catastrophic failure has occurred. The stresses required to cause SCC are often times quite minimal, especially in high strength steels which have a considerably low value of K ISCC . The...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001347
EISBN: 978-1-62708-215-0
... stiffening members. Examples are provided in Ref 1 . The Pressure Vessel Research Council (Welding Research Council) contains a considerable body of literature in their bulletins on this subject. An early text on this phenomena was written by Nadai ( Ref 2 ). Tests were performed to...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001804
EISBN: 978-1-62708-241-9
... scanning electron microscopy fatigue strength ASTM F138 (wrought stainless steel) UNS S31673 In the last decades the noticeable aging of the world population has contributed to a considerable growth in the amount of surgeries of different types, in spite of the significant...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001571
EISBN: 978-1-62708-229-7
... ferrite changes. In the base metal, they observed that the prior-austenite grain size begins to coarsen at 1000°C. Fig. 2 Interface microstructure of as-fabricated Midland-1 specimen (Murakami's reagent). Based on these observations, it was concluded [ 5 , 6 ] that specimen F-10 experienced...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001779
EISBN: 978-1-62708-241-9
..., some casting defects found in depth of casting by macroscopic examination which could trigger other defects and accelerate the damage mechanisms ( Fig. 3 ) [ 10 ]. These fabrication defects not only might be active zones for farther defects such as corrosion and erosion but also produce extra pressures...