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material removal

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Image
Published: 01 June 2019
Fig. 2 Removal of material from the internal wall of the wider pipe close to the inserted end of the narrower pipe. 3× More
Image
Published: 01 December 2019
Fig. 11 Shaft surface exposed after removal of bearing ring; ( a ) adhered material (unetched) and ( b ) boxed region in (a) showing severely deformed grains More
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001796
EISBN: 978-1-62708-241-9
... to minimize the effects of orbital slippage and rolling-contact fatigue. The damaged areas were examined under a scanning electron microscope, which revealed a high density of microcraters, characteristic of local melting and material removal associated with bearing currents. Investigators also examined...
Image
Published: 01 January 2002
Fig. 4 Striated fracture surface in type 304 stainless steel early in material-removal stage of cavitation erosion More
Image
Published: 01 January 2002
Fig. 1 Exposure to vibratory cavitation of normalized AISI 1020 steel. (a) Damage after 5 min. (b) Material removal after 10 min More
Image
Published: 01 January 2002
Fig. 2 Vibratory cavitation erosion of CA-6NM martensitic stainless steel. (a) Deformation rumpling and pitting at lath boundaries. (b) Early stage of material removal More
Image
Published: 01 January 2002
Fig. 3 Vibratory cavitation erosion of type 304 austenitic stainless steel. (a) Linear deformation features and boundary definition. (b) Material removal at upheaved grain boundary More
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
... by fatigue, creep, or environmentally-assisted cracking. Corrosion and wear are another form of progressive material alteration or removal that can lead to failure or obsolescence. This article primarily covers the topic of abrasive wear failures, covering the general classification of wear. It also...
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
... rapid crack growth by ductile or brittle cracking; more progressive (subcritical) forms involve crack growth by fatigue, creep, or environmentally-assisted cracking. Corrosion and wear are another form of progressive material alteration or removal that can lead to failure or obsolescence...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
...(a) for AISI 1020 steel, CA-6NM, and type 304 stainless steel, respectively. Thereafter, material removal takes place first at surface upheavals, which usually occur at boundaries, in the ferrite phase at triple points and ferrite-pearlite interfaces in 1020 steel ( Fig. 1b ), at martensite-lath interfaces...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0091853
EISBN: 978-1-62708-223-5
... and cause severe wear by two distinct wear mechanisms, illustrated in Fig. 3 . Because the quartz particles are sharp and angular, gouging abrasion was the primary mechanism of material removal ( Fig. 4 ) at the wear ring on the edge of the grinding plate. The forces generated during gouging abrasion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0045926
EISBN: 978-1-62708-235-8
... it was present before the conversion coating was applied. After 15 min of argon ion etching, corresponding to approximately 45 nm of material removed, high concentrations of sodium were still evident, indicating that the sodium was present before the chromate conversion treatment was performed. A review...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003569
EISBN: 978-1-62708-180-1
.... After the microjet impact, liquid flow on the solid surface could also have some effect on material removal. This is the reason why some surface-crack formation observed could not be attributed only to microjet impact on the solid surface ( Ref 2 , 3 , 4 , 5 , 6 , 7 , 8 ). Cavitation Erosion...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006789
EISBN: 978-1-62708-295-2
... velocity produces erosion. The same sand sliding down a steel chute produces abrasion. If the same sand is mixed with water and pumped through a steel pipe, it can produce corrosive wear, often called tribocorrosion. This means that part of the material removal is produced by dissolution of the steel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001648
EISBN: 978-1-62708-234-1
.... At the time of the coupling fracture, the pump had been turned on and had operated for only 6.5 min. Visual Examination The condition of the fractured coupling prior to removal of specimen material for laboratory examination is shown in Fig. 10 , 11 , 12 , 13 , 14 , 15 . The external surface...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003565
EISBN: 978-1-62708-180-1
... Material Removal Mechanisms The mechanisms by which material can be removed from a surface by repeated impacts include the following ( Ref 10 ): Oxidative wear: mild wear regime where contacting bodies are separated by oxide films reducing metal-to-metal contact Adhesion: a more severe...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001305
EISBN: 978-1-62708-215-0
... requirement for class A wheels. Chemical Analysis/Identification Table 1 presents the results of wet chemical analysis conducted on material removed from the rim, along with the specified composition requirements. The wheel material met specification. Results of chemical analysis Table 1...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006793
EISBN: 978-1-62708-295-2
... or nondeforming materials Material-Removal Mechanisms The mechanisms by which material can be removed from a surface by repeated impacts include the following ( Ref 5 , 6 , 13 ): Oxidative wear: mild wear regime, where contacting bodies are separated by oxide films, thus reducing metal...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0046242
EISBN: 978-1-62708-236-5
... Abstract An integral coupling and gear (Cr-Mo steel), used on a turbine-driven main boiler-feed pump, was removed from service after one year of operation because of excessive vibration. Spectrographic analysis and metallographic examination revealed the fact that gritty material in the gear...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001516
EISBN: 978-1-62708-234-1
... loss. Introduction of external contamination or a wear particle at head/disk interface can lead to both types of errors. In soft errors the coating usually suffers only an extremely light damage which can not be seen with an unaided eye. When the magnetic material is removed or damaged by head media...