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CA-15

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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
...Abstract Abstract An investigation was conducted to determine the cause of numerous cracks and other defects on the surface of a cast ASTM A743 grade CA-15 stainless steel main boiler feed pump impeller. The surface was examined using a stereomicroscope, and macrofractography was conducted...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001085
EISBN: 978-1-62708-214-3
...Abstract Abstract Liquid penetrant inspection of an ASTM A296 grade CA-15 residual heat removal pump impeller from a nuclear plant revealed a crack like indication that approximated the outer contour of the wear ring. Examination of a section containing the crack and three sections from near...
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
..., were constructed of 12 to 13% Cr steel (CA-15), air cooled from about 1000 °C (1832 °F) and tempered in the range of 590 to 815 °C (1095 to 1500 °F). In recent years, CA-15 has been largely supplanted by CA-6NM, a 12 to 14% Cr casting grade with 4% Ni, which has somewhat better weldability...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001083
EISBN: 978-1-62708-214-3
... corrosion resistance in a feedwater environment, and because of their higher hardness, they provide improved erosion resistance. Several grades of cast stainless steels are available: CA6NM, CA-15, and CA-40. CA-6NM has the best corrosion resistance, but is the most expensive. CA-40 has the best erosion...
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
... penetrant testing. The surface of the impeller was ground for balancing prior to installation, probably exposing some of the subsurface porosity. Pertinent Specifications The cast impeller was specified by the supplier to be a modified version of CA- 15, a 12% Cr martensitic stainless steel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001489
EISBN: 978-1-62708-217-4
... Pct) C Cr Ni Mn Si S Fe Others Specimen A 0.06 20.3 ± 0.3 8.3 ± 0.4 0.7 ± 0.2 0.8 ± 0.4 0.06 bal traces of Al, Ca, and Mg Specimen B 0.06 19.9 ± 0.5 8.6 ± 0.5 0.7 ± 0.1 0.7 ± 0.3 0.06 bal — Fig. 1 (a) Optical and (b) SEM micrographs depicting strings...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001603
EISBN: 978-1-62708-228-0
.... Analysis of these inclusions confirmed the presence of Fe, Si, Ca, and O, indicating slag entrapment to be the most probable culprit. Crack Electric resistance welded Ferrite band Fusion zone API 5L X-46 (Other, miscellaneous, or unspecified) failure Joining-related failures Introduction...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001769
EISBN: 978-1-62708-241-9
... carbon and Ca in microbiologically derived CaCO 3 . Geochim. Cosmochim. Acta 63 , 129 – 136 ( 1999 ) 10.1016/S0016-7037(98)00297-X 15. Ferrer R.M. , Quevedo-Sarmiento J. , Rivadeneyra M.A. , Bejar V. , Delgado R. , Ramos-Cormenzana A. : Calcium carbonate...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001249
EISBN: 978-1-62708-236-5
... The flanged bearing bush carrying the drive shaft of a feed pump suddenly fractured after about two years' service. The play between the shaft and the internal wall was ca. 0.1 mm. The pure water flowing through this gap can be considered as a lubricant. The lubrication broke down as a result of an unknown...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001826
EISBN: 978-1-62708-241-9
... ruptured openings (punch marks) covering a length of approximately 1.8 m. The boiler had been in operation for the last 15 years and never before had such a problem been encountered. Moreover, all other pipes adjacent to the leaked pipe had no internal or external problem. For the last 10 years, the boiler...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003534
EISBN: 978-1-62708-180-1
... concentrations (at.%). 1.5 nm sputter removed Table 3 Auger electron spectroscopy atomic concentrations (at.%). 1.5 nm sputter removed Sample C O Na S Ca Cr Fe Ni Point 1, large defect 13.1 30.2 3.5 nd 38.0 3.4 10.0 1.9 Point 2, small defect 8.6 35.2 5.6 0.5 nd 9.7 37.9...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001802
EISBN: 978-1-62708-241-9
... is characterized by a mix of compression damage and classic torsional failure, shown in Fig. 15 . In this example, a flat, ductile torsional fracture surface is obser ved, consistent with torsional overload. However, cracks along the intrados of the bend are also observed, consistent with compressive damage...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001561
EISBN: 978-1-62708-229-7
.... , Corrosion Science, 20 , 555 ( 1980 ) 10.1016/0010-938X(80)90071-2 13. Bednar L. , Corrosion, 33 , No. 9 , 321 September ( 1977 ) 10.5006/0010-9312-33.9.321 14. Engle J.P. , Floyd G.L. Rosene R.B. , NACE Technical Committee Report Publication 59-5, Corrosion, 15...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001263
EISBN: 978-1-62708-224-2
... the lamella spacing. If the stress was increased the pearlite grain cleaved along the slip lines shown above ( Fig. 5 ). Fig. 4 Slip line in a pearlite grain. Carbon replica. 15 000 × Fig. 5 Cleavage of a pearlite grain. Carbon replica. 10 000 × In our opinion this phenomenon can...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
...–30 CaSO 4 , mol% 24 41–67 18–42 15–30 (a) Assumes that all measured Na + , K + , Mg 2+ , and Ca 2+ in particulate matter are present in the form of sulfate. Courtesy of Z. Tang and B. Gleeson, University of Pittsburgh Fig. 24 Distribution of particulate matter (PM) around...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001715
EISBN: 978-1-62708-219-8
.../0010-938X(80)90089-X 15. Yoshito T. , Yukio Y. , and Makoto K. “Effects of Tensile Strength on the Stress Corrosion Behavior of Steel Wires in Nh 4 SCN and NH 4 NO 3 Aqueous Solutions,” DRG81-01, Shinko Wire Company, LTD , Japan 16. Bernstein I.M. and Thomson...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001836
EISBN: 978-1-62708-241-9
... failed during bending operation in two bending machines. After UT inspection of the cracks, a depth of approximately 10–15 mm was found with a length approximately in the range of 2–10 mm. The cracks were observed on bends formed at both bending machines. Fig. 1 Crack photos observed...
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
... not significantly differ from the manufacturer’s prescribed analysis, except the electro conductivity, amount of Ca 2+ and Mn 2+ , represented in total hardness (TH) terms, and silicon which were higher than the prescribed analysis. Further investigation carried out by potentiostat proved that the probability...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001645
EISBN: 978-1-62708-232-7
.... Microprobe analysis was also performed on the polished samples in an EPMA to quantitatively determine the variation of carbon in the case and core regions, as well as to determine the types of NMI present. The EPMA studies were carried out at 15 kV accelerating voltage and 5 × 10 −8 A probe current...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001669
EISBN: 978-1-62708-229-7
... of Fossil Plants, EPRI , Palo Alto, CA ( 1986 ). 3. Pope D. P. , Private Communication, University of Pennsylvania , Philadelphia, PA ( 1986 ). 4. Hantsch H. et al. , “ Submerged Arc Narrow-Gap Welding of Thick-Walled Components ,” Welding Journal , Vol. 61 , pp. 27 – 34...