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cobalt-base materials

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001827
EISBN: 978-1-62708-241-9
... nozzle originating from a GE MS 500X gas turbine was investigated to define the cause of failure. The base material was cobalt-based superalloy FSX414. The nozzle segment was subjected to a failure analysis following a series of examinations, including visual examination, optical microscopy, SEM...
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
... oxidation thermal-barrier coated superalloys spalling microstructural analysis operating time ECY768 (cobalt-base superalloy) Co-Ni-Cr-Al-Y (cobalt-nickel-chromium-aluminum-yttrium alloy) Introduction The largest use of coatings on superalloys is on components in the hot gas section...
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
... Temperature Sulfur-Oxygen Corrosion of Nickel and Cobalt: , Hot Corrosion Problems Associated with Gas Turbines , American Society for Testing and Materials , Philadelphia , p. 21 ( 1967 ). 19. Misra A. K. , “Hot corrosion of Nickel and Cobalt Base Alloys at Intermediate Temperatures” , 10th...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001281
EISBN: 978-1-62708-215-0
...Abstract Abstract The first-stage nozzles of a high-pressure turbine section of an industrial gas turbine exhibited leading and trailing-edge deterioration. The nozzles were made of X-40, a cobalt-base alloy, and were aluminide coated. Failure analysis determined that the deterioration...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c9001610
EISBN: 978-1-62708-222-8
... carriers. 2 , 5 The detailed mechanism of the formation of immunogens by metal-protein complexions in vivo is not well known, but there are two possible mechanisms (cell- and humoral-mediated response) to explain the immune response. The humoral mechanism is based on the production of freely circulating...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001819
EISBN: 978-1-62708-180-1
...-chromium-molybdenum alloy: ASTM F 75-82, ISO 5832/IV (1978) Wrought cobalt-base alloys: ASTM F 90-82, ASTM F 562-84, ISO/DIS 5832/6, ASTM F 563-83, ISO/DIS 5832/8 Certain applications—for example, in the skull—involve use of tantalum and niobium, both of which have high corrosion resistance...
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
...-base superalloy 1040 1900 1 S-816 cobalt-base superalloy 980 1800 1 Hastelloy X nickel-base superalloy 1205 2200 1 HX (17Cr-66Ni-bal Fe) 1150 2100 1 (a) Seamless tube. (b) Electric resistance welded tube Melting points of common refractories Table 2...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001623
EISBN: 978-1-62708-232-7
... failure investigation, requires an arrival at the correct conclusions and suitable recommendations for corrective action. The process of obtaining the correct conclusions and making the correct recommendations is based on an accurate understanding of the part history, a thorough knowledge of the materials...
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
...-base superalloy 1040 1905 3 S-816 cobalt-base alloy 980 1795 3 Hastelloy X nickel-base superalloy 1205 2200 3 HX (17Cr-66Ni-bal Fe) 1150 2100 3 (a) Seamless tube. (b) Electric-resistance-welded tube General power plant classifications Table 2 General...
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
... erosion-resistant materials may be the only practical way to extend the life and decrease repair costs of affected equipment. Metals and alloys that are far more erosion resistant than the standard constructional materials described earlier are well known. The best of these, exemplified by cobalt-base...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001367
EISBN: 978-1-62708-215-0
... and graph of a crack fracture surface. Base metal elements revealed that the impeller material was an AISI 4300 alloy steel. Element wt% at.% Silicon 0.27 0.53 Chromium 1.10 1.18 Manganese 0.88 0.89 Iron 96.40 96.12 Nickel 1.35 1.28 Scanning Electron...
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
..., the term 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...
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
.... Dye-penetrant examinations and radiographic inspection revealed the presence of approximately 40 cracks at the inner surface in the three circumferential weld regions examined. Virtually all of the cracks were in the base metal HAZ of the forged elbow and wedge material on each side of the weld...
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
.... Lai G.Y. , High-Temperature Corrosion of Engineering Alloys , p 73 – 84 , ASM International , Materials Park, Ohio ( 1990 ) 2. Smith G.D. , Bucklin P.J. , Some observations on the performance of nickel-containing commercial alloys in nitrogen-based atmospheres , Paper No. 375...
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
.... 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. Failures from creep deformation depend on material, time-temperature exposure, loading conditions, component...
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
..., <0.1% Nb, 0.085% C, and 0.006% S. It was concluded that the material was a precipitation-hardening nickel-base superalloy comparable to Udimet 500, Udimet 710, or René 77. This type of alloy is not normally used for gas turbine blades. Coatings or Surface Layers It is common practice...
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
... thiocyanate/acetone Blue color Identify cobalt-base alloys Copper Dithizone Purple color Sort copper-bearing stainless steels Iron Potassium ferricyanide Blue precipitate Sort low-iron high-temperature alloys Lead Sulfuric acid White precipitate Sort leaded bronze Molybdenum Potassium...
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
... alloys are used for the relatively cool components, such as those in the fan and low-pressure compressor sections. Nickel-base, iron-nickel, and iron-base heat-resisting alloys are used for “warm” parts, such as shafts, turbine disks, high-pressure compressor disks, and cases. Nickel-base and cobalt-base...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001818
EISBN: 978-1-62708-241-9
... to the sleeve on either side of the metal strip to restrict its movement over the sleeve. Incoloy 800 (UNS N08800) is Fe–Ni base super and heat resistant alloy widely used material for construction of equipment requiring corrosion resistance, heat resistance, strength, and stability for service up to 816 °C...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001841
EISBN: 978-1-62708-241-9
... of guide wire fracture showing beach marks consistent with fatigue crack growth The subject guide wire had not knowingly been subjected to any cyclic loading prior to service. However, the manufacturer did report that ultrasonic cleaning was used during manufacturing. Based on our analysis...