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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001259
EISBN: 978-1-62708-233-4
... sections of equally as many rings of two “bad” shipments were examinated. In the following these are designated as S1 and S2. Twenty-seven sections of a “good shipment are designated as G. Four rings of each shipment were analyzed as to their chemical composition. The analyses showed in the average...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001809
EISBN: 978-1-62708-241-9
... present throughout the body. Additionally, the ceramic coating was completely removed from the impeller. Chemical analysis at two different locations was performed by inductively coupled plasma (ICP) spectroscopy. The results were consistent with a cast NAB alloy, C95800 ( Table 1 ). The aluminum content...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001754
EISBN: 978-1-62708-241-9
... subsequently led to the discovery of overlooked debris in an engine chip detector, and thus resulted in a review of several maintenance practices. aircraft bearings operating overload inadequate maintenance and inspection M50 alloy steel bulk deformation energy dispersive spectrometry chemical...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001300
EISBN: 978-1-62708-215-0
... of the crack initiation area. Butterfly wings (arrows) are evidence of rolling-contact fatigue. Nital etchant. (a) 100× (b) 400× The chemical composition of the gear material is given in Table 1 , along with the specification for AISI 4140. The gear material meets the chemical requirements...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001823
EISBN: 978-1-62708-241-9
... (based on visual inspection, magnetic particle inspection, stereoscopic analysis, scanning electron microscopy, tensile and hardness testing, and chemical analysis) was attributed to damage resulting from a lightning strike. polyethylene coated pipe fracture lightning damage pipe steel leaking...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001324
EISBN: 978-1-62708-215-0
... (arrows) before it was fractured open in the laboratory. Fig. 2 Secondary crack after it was fractured open in the laboratory. Surface Examination Metallography Chemical Analysis/Identification The brittle, cleavage features of the lab fracture (rather than classic, tensile...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001335
EISBN: 978-1-62708-215-0
...Abstract Abstract The causes of cracking of an as-drawn 90-10 cupronickel tube during mechanical working were investigated to determine the source of embrittlement. Embrittlement was sporadic, but when present was typically noted after the first process anneal. Microstructural and chemical...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006781
EISBN: 978-1-62708-295-2
... thermomechanical fatigue testing. Image shows surface oxidation at bottom and oxide spike forming in the center of the specimen. Chemical etchant used highlights aluminum in the microstructure. Microstructure shown as white in image is depleted of aluminum as a result of aluminum diffusion to surface. Source: Ref...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001825
EISBN: 978-1-62708-241-9
... was conducted both in the as-received condition and after successive cleaning in a detergent solution, acetone, and methanol using ultrasonic agitation and a soft-bristled brush. In conjunction with the SEM examination, qualitative chemical analyses were performed in selected areas of the samples by energy...
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
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001819
EISBN: 978-1-62708-241-9
.... The chemical composition of duplex stainless steel, obtained through x-ray fluorescence analysis, is presented in Table 1 , and the chemical composition of the austenitic stainless steel is shown in Table 2 . Chemical composition of duplex stainless steel Table 1 Chemical composition of duplex...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001190
EISBN: 978-1-62708-235-8
...Abstract Abstract Brass pipe couplings submitted for examination were deep-drawn from disks then annealed and subsequently cold threaded. Chemical analysis confirmed that the specified alloy Ms 63 was used for fabrication. Some of the pipe already showed fine cracks prior to their installation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001712
EISBN: 978-1-62708-234-1
... 4.76 1C 0.434 4.90 4.67 1F 0.408 4.84 4.76 3D 0.428 4.58 4.57 3C 0.456 4.62 4.62 3F 0.436 4.57 4.57 Chemical analysis was performed on the roll bodies and the roll ends to confirm alloy composition. These are shown in Table 2 . Analysis on bulk samples...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001262
EISBN: 978-1-62708-224-2
... hammer broke after three or four months' service. It was reportedly manufactured of the heat resistant steel 30 CrMoV 9 (Material No. 1.7707). Verification of the chemical composition yielded the following values: C % Si % Mn % P % S % Cr % Mo % V % 0,32 0,18 0,60 0,022 0,013...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0046911
EISBN: 978-1-62708-227-3
... metal arc weld was 0.54%, whereas that of the submerged arc weld was 0.86%. After being weighed, the specimens were submerged in molten zinc for 850 h. Analysis (visual inspection, chemical analysis, 100x 2% nital-etched micrographs) supported the conclusions that the vat failed due to molten-zinc...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001776
EISBN: 978-1-62708-241-9
... steel) UNS J91149 Introduction Experimental Procedure Results and Discussion Conclusion References References 1. Perry R.H. , Green D.W. : Solid-Solid Operation and Processing, Chemical Engineers’ Handbook , 8th edn. , pp. 56 – 61 . McGraw-Hill , New York ( 2008...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001681
EISBN: 978-1-62708-234-1
... in Table 1 . Chemicals used in preparing metallographic samples. Table 1 Chemicals used in preparing metallographic samples. Metallographic etchant used for optical and scanning electron microscopy samples. 100 ml HCl + 5 ml 30% H 2 O 2 swab 1—5 sec, 25°C Electrolytic etchant used...
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
... thermal treatments between 800 and 1100 deg C for periods of 1 to 100 min. Microstructural parameters in the control specimens and in those from TMI-2 were quantified. Selective etchants were used to better discriminate desired microstructural features, particularly in the cladding. This report...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0089338
EISBN: 978-1-62708-224-2
..., and the fracture surfaces exhibited an angular orientation. Chemical analysis confirmed that the eye was similar to a resulfurized and rephosphorized grade 1144 steel. The sulfur content was slightly below the normal limits, and the phosphorus content was slightly above the typical range. Scanning electron...
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...