1-20 of 28 Search Results for

tungsten carbide-cobalt

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
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
...-strengthened superalloy. While Haynes 188 has lower cobalt and carbon contents than ECY 768, it has higher nickel and tungsten contents for solid-solution strengthening. Based on the EDS line profiles across bond-coat/substrate interface, the authors suggest that the composition differences between two cobalt...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001357
EISBN: 978-1-62708-215-0
..., and cobalt; titanium, aluminum, and molybdenum were minor alloying elements. Tungsten, niobium, and tantalum were not detected. A more accurate chemical analysis revealed the following composition: 53.7% Ni, 18 to 20% Cr, 18.2% Co, 3.7% Ti, 3.7% Mo, 2.5% Al, 0.1 to 0.2% Fe, <0.1% Nb, 0.085% C, and 0.006...
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
... were chosen for the experiment. The alloys contained differing amounts of the elements nickel, chromium, iron, cobalt, tungsten, and silicon. The chemical analysis of the samples is shown in Table 4 . Chemical analysis of the alloys used in the experiment. Complete composition of UCX not provided...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
.... Iron, nickel, and cobalt superalloys owe their unique strength, up to a fairly high threshold temperature, to the presence of strengthening particles such as inert oxide dispersoids, carbides, coherent ordered precipitates, and solid-solution strengthening agents in a fcc (with appropriate nickel...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003545
EISBN: 978-1-62708-180-1
... failure is used. For example, a creep failure of a cobalt-base alloy turbine vane is shown in Fig. 1 . The bowing is the result of a reduction in creep strength at the higher temperatures from overheating. Fig. 1 Creep damage (bowing) of a cobalt-base alloy turbine vane from overheating...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... creep failure is used. For example, a creep failure of a cobalt-base alloy turbine vane is shown in Fig. 1 . The bowing is the result of a reduction in creep strength at the higher temperatures from overheating. Fig. 1 Creep damage (bowing) of a cobalt-base alloy turbine vane from overheating...
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
..., 347 925 1695 6 330 1150 2100 6 405, 410 705 1300 6 416 675 1245 6 420 620 1150 6 430 815 1500 6 440 760 1400 6 442 980 1795 6 446 1095 2005 6 Superalloys N-155 iron-base superalloy 1040 1905 3 S-816 cobalt-base alloy...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003517
EISBN: 978-1-62708-180-1
...-prime phase is a face-centered cubic compound with a composition A 3 B, where typically A is nickel and, to a lesser extent, cobalt; and B is aluminum and, to a lesser extent, titanium, niobium, and tantalum. The precipitated gamma-prime particles act to obstruct dislocation motion and therefore provide...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006807
EISBN: 978-1-62708-329-4
... mechanisms that affect the creep rate, such as carbide precipitation, agglomeration of carbides and other precipitates, grain-boundary sliding, void generation and growth, and so on. However, assigning a unique internal variable to each microscopic mechanism of interest can become a daunting, and often...
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
.... Materials that have a hexagonal close-packed structure with a high c/a ratio have a low dislocation cross slip rate and are less prone to galling. This explains why cobalt-base alloys and cadmium-plated alloys resist galling, while titanium alloys tend to gall. The factors that affect wear and galling...
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
... to galling. This explains why cobalt-base alloys and cadmium-plated alloys resist galling, while titanium alloys tend to gall. The factors that affect wear and galling can be design, lubrication, environmental, and material related. Component design is probably the most critical factor. When stainless...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001536
EISBN: 978-1-62708-229-7
... graphite ring. The solution to this problem appears to be the use of an alternate material for the wear ring. The other commonly used binder phase in cemented WC composites is cobalt, but its use in nuclear plants is precluded because of concerns about cobalt dissolution in the coolant and subsequent...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... prepared from a jaw established that the surface had been case carburized to a depth of 0.8 to 1.6 mm ( 1 32 to 1 16 in.), the case structure was martensite containing small spheroidal carbides but no carbide network, the structure of the core consisted of martensite plus some ferrite...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
... (<4.3%) or hypereutectic (>4.3%) alloy or as a eutectic alloy (= 4.3%) during solidification. Carbon saturation, SC, can be calculated as: (Eq 2) SC = TC 4.3 − ( % Si + % P 3 ) This value is important, because it is a measure of the tendency toward carbide...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
.... The microstructure consisted of size 5 type A graphite flakes in a matrix of approximately 73% pearlite/27% ferrite. No free carbides were present. The brittle crack followed the profile of the graphite flakes, as shown in Fig. 5(c) . Conclusions The transmission housing castings exhibited brittle overload...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
... noble metals and alloys therefore tend to be minimized. Cobalt-Base Alloys Cobalt-base alloys, most of which are chromium bearing, are resistant to galvanic corrosion because of their noble position in the galvanic series. However, in environments in which their passive film is not stable...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006795
EISBN: 978-1-62708-295-2
... of mixed behavior was created based on results (rounded silica sand of 0.1 to 0.3 mm, or 0.004 to 0.01 in., diameter; 61 m/s, or 200 ft/s, velocity) obtained for WC-15wt%Co cemented carbide consisting of brittle tungsten carbide grains and ductile cobalt matrix ( Ref 49 ). Erosion of a given material...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
.... The microstructure consisted of size 5 type A graphite flakes in a matrix of approximately 73% pearlite/27% ferrite. No free carbides were present. The crack followed the profile of the graphite flakes, as shown in Fig. 5(c) . Conclusions The transmission housing castings exhibited brittle overload cracks...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... therefore tend to be minimized. Cobalt-Base Alloys Cobalt-base alloys, most of which are chromium bearing, are resistant to galvanic corrosion because of their noble position in the galvanic series. However, in environments in which their passive film is not stable, they occupy a more active position...
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
... of cavitation resistance, especially for alloys. Several high-purity metals and some commercially available metals and alloys were tested by means of vibratory apparatus ( Fig. 13 ). The specimen is opposite the vibration horn with a distance of 0.9 mm (0.04 in.) Tungsten, molybdenum, cobalt...