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Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006759
EISBN: 978-1-62708-295-2
... be adequately removed to achieve appropriate results. The manufacturing or forming process can also affect how bulk analysis is performed, especially in a process that can severely segregate constituents, such as castings or forms of compositionally gradient metallic additive manufactured parts. Heat...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001517
EISBN: 978-1-62708-217-4
...Abstract Abstract The purpose of this investigation was to determine the cause of the ultrasonic signal attenuation noted during an inspection of a composite aircraft component. Although ultrasonics was able to identify the location of the defective areas, destructive analysis had...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001824
EISBN: 978-1-62708-241-9
... an aggressive chemistry is allowed to develop and attack local surfaces. threaded fasteners corrosion chemical exposure stainless steel improper materials SEM analysis composition A193-B8S (manganese-silicon austenitic stainless steel) UNS S21800 A194 (chromium-molybdenum alloy steel...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003572
EISBN: 978-1-62708-180-1
...Abstract Abstract This article reviews the abrasive and adhesive wear failure of several types of reinforced polymers, including particulate-reinforced polymers, short-fiber reinforced polymers (SFRP), continuous unidirectional fiber reinforced polymers (FRP), particulate-filled composites...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0065827
EISBN: 978-1-62708-221-1
...Abstract Abstract Failure analysis results were employed to identify a better alloy. Chipper knives used in the field to chip logs failed frequently. The knives were made of alloys with a composition of Fe-0.48C-0.30Mn-0.90Si-8.50Cr-1.35Mo-1.20W-0.30V. The development of tougher alloy steel...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003529
EISBN: 978-1-62708-180-1
... mode image. (a) Secondary electron imaging mode where particles are not distinguished by composition. (b) Image from backscatter mode, which shows the lower atomic number particles (in this case aluminum 1, 2, 3, 4, 5, 6, and 8) as darker than the iron particles (3A and 7). Note also that the fibers...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0049838
EISBN: 978-1-62708-222-8
...Abstract Abstract An electron probe microanalyzer was applied to the study of service failures (due to severe heating) of aluminum wire connections in residential electrical circuits. Perturbed regions in which the composition underwent a change during the failure were revealed by optical...
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
... compositions of the base and weld metals are presented in Table 1 . Results of chemical analysis Table 1 Results of chemical analysis Elements Composition, % Base metal Weld metal Carbon 0.102 0.62 Manganese 0.47 1.02 Phosphorus 0.006 0.009 Sulfur 0.018 0.019 Silicon...
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
... and combined effects of alloying elements. A comparison measure, identified as the critical diameter(D I ), was implemented to estimate the hardening response of a steel from the chemical composition. The critical diameter calculated for a given steel composition can thereafter be used to create an approximate...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001198
EISBN: 978-1-62708-221-1
.... Three more fractured bearing caps were subsequently examined in order to state particulars for this specific case about the wellknown effect of chemical composition 1 ). These were compared with 5 others that gave satisfactory service over longer operating periods. Mean values for both groups are given...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001829
EISBN: 978-1-62708-241-9
... The largest use of coatings on superalloys is on components in the hot gas section of turbines, that is, on the combustors, blades, and vanes. Experience has shown that substrate compositional requirements for improved high-temperature strength are not compatible with the requirements for optimal high...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001831
EISBN: 978-1-62708-241-9
... and was packed with molybdenum disulfide (MoS 2 ) lithium grease. Metallurgical structures and chemical compositions of the bearing’s matrix materials were inspected using a microscope and photoelectric direct reading spectrometer. SEM/EDS was used to examine the local morphology and composition of fracture...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001365
EISBN: 978-1-62708-215-0
... to determine its chemical quantitative composition. An area that contained an apparent repair weld was also analyzed using energy-dispersive x-ray spectroscopy (EDS) under a standardless quantitative (SQ) analysis program. EDS provides semiquantitative elemental analysis of materials under SEM examination...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c0048698
EISBN: 978-1-62708-228-0
... deposit and area of complete penetration through the tube wall. (c) Positions of layers of corrosion product on inner surface of piping (see Table 1 for compositions of layers) Investigation Conclusions Corrective Measures Acknowledgments Selected Reference Selected Reference...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006770
EISBN: 978-1-62708-295-2
...). In most applications for failure analysis, qualitative results are adequate, but the method can determine quantitative elemental compositions to a precision of 0.01 wt% with relative accuracies of ±5%, depending on the specific material, type of x-ray detector used, the method of data analysis employed...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001775
EISBN: 978-1-62708-241-9
... provided a caustic solution (NaOH) to remove HCl from the stream, before the latter was directed to a burner. Metallographic examination showed that the cracks were intergranular and were frequently branched. Although nominal chemical composition of the component was found within the specified range...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001084
EISBN: 978-1-62708-214-3
... increasing stress and initiating fracture. In addition, the composition and hardness of the impeller did not meet specifications. Revision of the casting process and institution of quality assurance methods were recommended. Electric power generation 12% Cr Casting-related failures Fatigue fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047297
EISBN: 978-1-62708-235-8
... with excessive ferrite. This anomalous structure is caused by shortcomings in the foundry practice of chemical composition, solidification, and inoculation control. Judging from the microstructure, the strength of the material was lower than desired for class 30 gray iron, and the suspected heat treatment...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001757
EISBN: 978-1-62708-241-9
... the microchemical composition. The fractured surface of the blade was examined using visual stereoscopy and a FE-SEM, while Vickers microhardness tests were used to evaluate the mechanical strength. General Inspection Material Verification 16th Stage Compressor Rotor Blades Inspection 16th Stage...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0047343
EISBN: 978-1-62708-236-5
... iron similar to ASTM A395. Visual examination of the rotor revealed unusually heavy oxidation and thermal fatigue cracking along the edge of the gas passage. Material properties, including microstructure, composition, and hardness, of both the rotor and housing were evaluated to determine the cause...