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cobalt alloys

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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001133
EISBN: 978-1-62708-214-3
... bond strength between the cast substrate and a sintered porous coating. Both the coating and the substrate were manufactured from a cobalt-chromium-molybdenum alloy. Metallographic analysis indicated that a decarburized layer existed on all surfaces of the casting, which prevented bonding during...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c0048399
EISBN: 978-1-62708-226-6
... Abstract Two of four adjustable Moore pins, which had been used to stabilize a proximal femur fracture, were found to be broken and deformed at their threads. The pins were made from a cobalt-chromium alloy and were not in the same condition. Brittle precipitates in the grains and grain...
Image
Published: 01 June 2019
Fig. 1 Two broken Moore pins from cobalt-chromium alloy. (a) Longitudinal section through fracture surface showing grain-boundary precipitates and a partially intercrystalline fracture. 63×. (b) SEM fractograph indicating grain-boundary separation. Compare with (e). (c) Longitudinal section More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c0048423
EISBN: 978-1-62708-226-6
... cobalt-chromium-molybdenum alloy. (a) Radiograph of total hip prosthesis. Circular wire marks acetabulum component made from plastics. Arrows (from top to bottom) indicate the area where the prosthesis stem is loosening at the collar, a stem fracture, and a fracture of bone cement at the end of the stem...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001803
EISBN: 978-1-62708-241-9
.... , and Heughebaert M. : “ Structural Analysis of Hydroxyapatite Coatings on Titanium ,” Biomaterials , 1986 , 7 , pp. 97 – 103 10.1016/0142-9612(86)90063-3 . 14. Gilbert J.L. , Buckley C.A. , et al. : “ Intergranular Corrosion-Fatigue Failure of Cobalt-Alloy Femoral Stems ,” J. Bone...
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
... cobalt-chrome-molybdenum alloy ISO 5832-4 Wrought cobalt-chrome-tungsten- nickel alloy ISO 5832-5 Wrought cobalt-nickel-chrome- molybdenum alloy ISO 5832-6 Wrought cobalt-chrome-nickel- molybdenum-iron alloy ISO 5832-7 Wrought cobalt-nickel-chrome- molybdenum-tungsten-iron alloy ISO 5832...
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
... implant materials: Stainless steel: ASTM F 55-82, ASTM F 56-82, ASTM F 138-82, ASTM F 139-82 (contains remelted Special Quality), ISO/DIS 5832/1 (1986) Unalloyed titanium: ASTM F 67-83, ISO 5832/II (1984) Titanium alloy Ti-6Al-4V ELI: ASTM F 136-79, ISO 5832/III (1978) Cast cobalt...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c0048403
EISBN: 978-1-62708-226-6
... direction. A zone of heavily deformed grains at the fracture edge was revealed by longitudinal metallographic examination. The shearing fractures of a commercially pure titanium screw and a cast cobalt-chromium-molybdenum alloy were discussed for purpose of comparison. Deformation Surcigal implants...
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
... spalling microstructural analysis operating time ECY768 (cobalt-base superalloy) Co-Ni-Cr-Al-Y (cobalt-nickel-chromium-aluminum-yttrium alloy) ...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001183
EISBN: 978-1-62708-223-5
... of copper, nickel, and cobalt. A steel of similar composition, X38Cr-MoV5 1 (W-No. 2343) was used for hot working tools. The sliver originated from a damaged press tool. Hot working Impurities Studs Aluminum Metalworking-related failures In a continuously cast aluminum press stud two small...
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
... Representative leading (a) and trailing (b) edges of the nozzles. 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...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0046966
EISBN: 978-1-62708-229-7
... Abstract A turbine vane made of cast cobalt-base alloy AMS 5382 (Stellite 31; composition: Co-25.5Cr-10.5Ni-7.5W) was returned from service after an undetermined number of service hours because of crack indications on the airfoil sections. This alloy is cast by the precision investment method...
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
... , Washington , p. 159 ( 1977 ). 12. Betteridge W. , Cobalt and its Alloys , Wiley , New York ( 1982 ). 13. Andrews K. W. , Dyson D. J. and Keown S. R. , Interpretation of Electron Diffraction Patterns , Plenum , New York , p. 172 ( 1967 ). 10.1007/978-1-4899-6475-5...
Image
Published: 01 June 2019
Fig. 1 Broken hip prosthesis of cast type ASTM F75 cobalt-chromium-molybdenum alloy. (a) Radiograph of total hip prosthesis. Circular wire marks acetabulum component made from plastics. Arrows (from top to bottom) indicate the area where the prosthesis stem is loosening at the collar, a stem More
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
... that are far more erosion resistant than the standard constructional materials described earlier are well known. The best of these, exemplified by cobalt-base alloys and NiTi alloys, are characterized by energy-absorbing deformation modes: fine twinning, stress- or strain-induced phase transformation...
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
.... Generally, CoCr binary alloys have a resistance to sulfidation that is superior to that of NiCr binary alloys because of the slower outward diffusion of cobalt ions through the scale during sulfidation and the relatively high melting point of the Co-Co 4 S 3 eutectic ( Ref 25 ). Example 2: Failure...
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
... of their high strength at high temperature. Among popular alloys are cast alloys, e.g., GTD-111 and GTD-222. The turbine vanes as stationary hot parts are not subjected to centrifugal loads and can be made of high-strength-cast cobalt-based superalloys. Cobalt-based superalloys such as FSX 414 show good...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001266
EISBN: 978-1-62708-215-0
... manufacturer. Two substandard-size tensile bars were machined, one from the bottom of the stem and the other from the body of the stem where the subject prosthesis fractured. The substitution of cast stainless steel for the traditional wrought stainless steel or cast cobalt-chromium alloy...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c0091757
EISBN: 978-1-62708-232-7
... resistance to sulfidation of the alloy. Inconel 617 has lower nickel content and higher cobalt and molybdenum content. Recommendations On-site testing was suggested, and test coupons of various alloys were installed before fabricating another kiln. The suggested alloys were RA85H, 800HT, HR-120...
Book Chapter

Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006398
EISBN: 978-1-62708-217-4
... Abstract Inspections and microstructural analysis revealed intergranular corrosion of 6061-T6 aluminum alloy aircraft fuel line beneath ferrules. The cause of the corrosion was traced to the fuel line marking process, which involved electrolytic labeling. Although subsequent rinsing of the fuel...