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UNS G43400

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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.c9001384
EISBN: 978-1-62708-215-0
... bolts manufactured using controlled processes. Machine tools Milling cutters 4340 UNS G43400 Hydrogen damage and embrittlement The draw-in bolt and the collet from a vertical-spindle milling machine broke during routine cutting of blind recesses after a relatively long service...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001299
EISBN: 978-1-62708-215-0
... for cracks during periodic maintenance overhauls. Aerospace engines Airplanes Nonmetallic inclusions 4340 UNS G43400 Fatigue fracture A steel piston engine crankshaft in a transport aircraft failed catastrophically during flight. Visual examination...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001620
EISBN: 978-1-62708-229-7
... shaft. It was suggested that the surfaces be securely clamped together and that an in-service maintenance program be initiated to ensure that the tightness of the clamping bolts was verified regularly. Fretting fatigue Pulverized coal Shafts (power) 4340 UNS G43400 Transgranular fracture...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001380
EISBN: 978-1-62708-215-0
... failure was attributed to stress-corrosion cracking. Short- and long-term recommendations to prevent future failures are given. Crack initiation Fasteners 4340 UNS G43400 Brittle fracture Stress-corrosion cracking Pitting corrosion A main rotor pitch horn bolt was found to be...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001027
EISBN: 978-1-62708-214-3
... recommended, along with nondestructive inspection of the region at intervals determined by fractographic analysis of the fatigue crack growth. Bolted joints Drives Helicopters Military planes Shafts (power) 4340 UNS G43400 Corrosion fatigue The 4340 steel main rotor yoke of a...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001293
EISBN: 978-1-62708-215-0
... fabrication. Intergranular fracture Notch sensitivity Pitting (corrosion) Stress concentration 4340 UNS G43400 Stress-corrosion cracking Hydrogen damage and embrittlement Corrosion fatigue A mixer pivot support was found to be broken during a pre-flight inspection...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001792
EISBN: 978-1-62708-241-9
... shafts fracture rotary-bending fatigue steel ratchet marks beach marks star-shaped fracture pattern SEM/EDX analysis fatigue strength SAE 4340 (nickel-chromium-molybdenum alloy steel) UNS G43400 SAE 5046H (low-alloy chromium steel) UNS H50460 The primary objective of a...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001794
EISBN: 978-1-62708-241-9
... steel insufficient fillet radius fractography hardness 4340 (low-alloy steel) UNS G43400 According to the information provided at the beginning of our investigation, the submitted specimen is the drive shaft in the propulsion system of a boat that operated in the North Pacific. The...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001752
EISBN: 978-1-62708-241-9
... ultra-low sulfur AMS 6414 steels. aircraft crankshafts fatigue fracture forging defects low-sulfur steel planar dimpled facets tension-to-tension fatigue testing notch impact toughness AMS 6414 (low-alloy steel) UNS G43400 In 1999 and 2000, 15 crankshafts...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001790
EISBN: 978-1-62708-241-9
... inclusions steel abnormal wear pattern metallographic analysis microstructure 4340 (nickel-chromium-molybdenum alloy steel) UNS G43400 This paper outlines the metallurgical and mechanical failure analysis of a high-speed pinion shaft that was in service aboard a seafaring...