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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001160
EISBN: 978-1-62708-220-4
... are prone to smearing and work hardening during machining, it was recommended that these types of steels be machined only with sharp, short tools mounted in rigid structures. In addition, residual stresses should be eliminated by post-process annealing in a protective atmosphere. Chlorides Worm gears...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001590
EISBN: 978-1-62708-228-0
...Abstract Abstract This case study demonstrates that Alloy 601 (UNS N06601) is susceptible to strain-age cracking. The observation illustrates the potential importance of post weld heat treatment to the successful utilization of this alloy in certain applications. Steam reforming Inconel...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001298
EISBN: 978-1-62708-215-0
... contributed to the fatigue process. How Failure Could Have Been Prevented Better processing controls during the etching and plating procedures would have lessened the possibility of defective plating and subsequent stripping. The post-plating baking which reduced the mechanical properties should...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0048498
EISBN: 978-1-62708-234-1
... between the areas of through-thickness skin fracture at the front and rear spar. Following the definition of the type and extent of fracture, tests were performed to determine if any major material discrepancies existed in either fabrication or processing. Accordingly, sections of the skin, spar...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001430
EISBN: 978-1-62708-236-5
... of the base material, shape of the weld preparation and the welding procedure which involves choice of the welding process, electrodes, size of runs, electrical parameters and pre- or post-heat. The adequacy of the procedure is then demonstrated by a practical test involving both NDT and destructive test...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001433
EISBN: 978-1-62708-235-8
... preparation and the welding procedure which involves choice of the welding process, electrodes, size of runs, electrical parameters and pre- or post-heat. The adequacy of the procedure is then demonstrated by a practical test involving both NDT and destructive test involving both competence of welders...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001595
EISBN: 978-1-62708-235-8
... as an independent variable and the composition as a dependent variable. Clearly, controls such as material and purchasing specifications can be successfully implemented to obtain steel that will yield predictable and suitable post-processing properties for component manufacture. In commercial failure analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001519
EISBN: 978-1-62708-223-5
... embrittlement, possibly caused by a post heat-treat cleaning/pickling process. Part Data The 4340 steel draw-in bolt ( Fig. 1 ) was heat treated to 1515 MPa (220 ksi) tensile strength, then subjected to a cleaning/pickling operation to remove scale. The draw-in bolt and collet are installed in opposite...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001722
EISBN: 978-1-62708-236-5
... Plating of Steel”—D.T.D. 916A (Superseding D.T.D. 916), December 1955, and the salient points which affect the service life of hard chromium-plated parts are summarised below: The process is for use primarily on carbon and low alloy steels which require a hard surface and is regarded...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001161
EISBN: 978-1-62708-220-4
... to be completely martensitic. Thus, the failure was due to hardening of the base material during welding, and recommendation was made to temper or anneal the welded regions to reduce the effects of hydrogen under pressure. Ammonia Chemical processing equipment Heat exchangers Post heating Welded joints...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001344
EISBN: 978-1-62708-215-0
... feedwater contamination. Additional recommendations were to eliminate these short longitudinal weld joints by using a bracket assembly joint between the tubes, use a post-weld heat treatment to relieve residual welding stress or select a more stress-corrosion cracking resistant alloy for this particular...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003502
EISBN: 978-1-62708-180-1
...Abstract Abstract This article provides assistance to a failure analyst in broadening the initial scope of the investigation of a physical engineering failure in order to identify the root cause of a problem. The engineering design process, including task clarification, conceptual design...
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
...Abstract Abstract After about four years of service, cracks appeared on the internal or process-side surfaces of four evaporator pans in a sugar concentrator. The pans consisted of a Mo stabilized austenitic stainless steel inner vessel surrounded by a mild steel steam jacket. Corrosion...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001812
EISBN: 978-1-62708-241-9
..., (ii) the apparent absence of cadmium-filled secondary cracks reported by the initial investigators probably arose because etched sections had been examined, with the etching process dissolving the cadmium, and (iii) other screws did not fail during the post-crash fire because there were very thin...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001432
EISBN: 978-1-62708-221-1
... of the welding process, electrodes, size of runs, electrical parameters and pre- or post-heat. The adequacy of the procedure is then demonstrated by a practical test involving both NDT and destructive test involving both competence of welders subsequently employed on the job must also be assessed by carrying out...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001431
EISBN: 978-1-62708-221-1
... reliability must be beyond question, it is necessary to give adequate consideration to all the relevant factors, e.g., weldability of the base material, shape of the weld preparation and the welding procedure which involves choice of the welding process, electrodes, size of runs, electrical parameters and pre...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006815
EISBN: 978-1-62708-329-4
...Abstract Abstract The intent of this article is to assist the failure analyst in understanding the underlying engineering design process embodied in a failed component or system. It begins with a description of the mode of failure. This is followed by a section providing information on the root...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0049796
EISBN: 978-1-62708-235-8
.... (b) Region adjacent to (in contact with) bridgewire and pins Additional SEM analyses of the glass surfaces and pins to which the bridgewires were welded revealed the presence of chlorine-containing residue from a post-machining cleaning process. Subsequent analyses by ion-selective electrode...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001328
EISBN: 978-1-62708-215-0
.... Applications The catalytic steam reforming process uses light to medium hydrocarbons in a certain ratio to steam in order to produce different synthesis gases (i.e. methanol, hydrogen, towngas, CO-CO 2 , oxoalcohols, or reduction gas). The heart of the steam reforming process is the primary reformer...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001593
EISBN: 978-1-62708-234-1
... in several demanding applications including food processing, medical components, and fluid handling. 1 The polysulfone body of the failed sensor had been injection molded around a tubular stainless steel insert to form the final component. Background information obtained on the application showed...